GMC Worldzz: January 2020

Friday, January 31, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 776

the K17 EBCM.

3. Install a 3 A fused jumper wire at the signal circuit terminal B. Verify the scan tool Wheel Speed Sensor parameter changes while rapidly

tapping the fused jumper wire to the low reference circuit terminal A.

瀚慖f no change is observed, disconnect the harness connector at the K17 EBCM and test for the following conditions below. If all circuits

test normal, replace the K17 EBCM.

* Signal circuit for short to voltage.

* Low reference circuit for a short to voltage, short to ground, or an open/high resistance.

4. If all circuits test normal, test or replace the B5 wheel speed sensor.

Component Testing

Note: The following wheel speed sensor test is polarity sensitive. The wheel speed sensor can be permanently damaged if the polarity is reversed

during the test.

1. Ignition OFF, disconnect the harness connector at the appropriate B5 wheel speed sensor.

2. Connect a 3 A fused jumper wire between the signal terminal 1 and 12 V.

3. Connect a DMM set to read DC amperage between the low reference terminal 2 and ground.

4. Spin the wheel very slowly, test for a DC current switching between a low value of 4-8 mA and a high value of 11-16 mA.

瀚慖f not within the specified range, replace the B5 wheel speed sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Front Wheel Speed Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Wheel Speed

Sensor/Service and Repair/Front Wheel Speed Sensor Replacement)

* Rear Wheel Speed Sensor Replacement (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Wheel Speed

Sensor/Service and Repair/Rear Wheel Speed Sensor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup and programming

C0050

DTC C0035, C0040, C0045, or C0050

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC C0035 06

- Left Front Wheel Speed Sensor Circuit Low Voltage/Open

DTC C0035 0F

- Left Front Wheel Speed Sensor Circuit Signal Erratic

DTC C0035 18

- Left Front Wheel Speed Sensor Circuit Low Signal Amplitude

DTC C0035 5A

- Left Front Wheel Speed Sensor Circuit Not Plausible

DTC C0040 06

- Right Front Wheel Speed Sensor Circuit Low Voltage/Open

DTC C0040 0F

- Right Front Wheel Speed Sensor Circuit Signal Erratic

DTC C0040 18

- Right Front Wheel Speed Sensor Circuit Low Signal Amplitude

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 166

2. Verify that DTC B0081 11 or DTC B0081 4B is not set in the passenger presence module.

瀚慖f DTC B0081 11 or DTC B0081 4B is set in the passenger presence module, perform the Passenger Presence System Preload procedure.

Refer to Passenger Presence System Preload Test (See: Restraints and Safety Systems/Air Bag Systems/Description and

Operation/Passenger Presence System Preload Test).

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning) for passenger presence module or SDM replacement,

setup, and programming

B0082

DTC B0082

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0082 01

- Seat Belt Reminder Sensor Short to Battery

DTC B0082 02

- Seat Belt Reminder Sensor Short to Ground

DTC B0082 04

- Seat Belt Reminder Sensor Open Circuit

Diagnostic Fault Information

Circuit/System Description

The seat belt reminder sensor is in the passenger seat cushion and provides an input to the inflatable restraint sensing and diagnostic module

(SDM). The SDM supplies a low reference circuit and a seat belt reminder sensor signal circuit to determine seated or unseated condition of

passenger seat.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

B0082 01

The SDM detects a short to voltage in the seat belt reminder sensor signal circuit.

B0082 02

The SDM detects a short to ground in the seat belt reminder sensor signal circuit

B0082 04

The SDM detects an open/high resistance in the seat belt reminder sensor signal circuit or the seat belt reminder sensor ground circuit

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Technical Service Bulletin # 09-08-52-004A Date: 100108

Keyless System - Remote Start Transmitter Diagnostic Tip

INFORMATION

Bulletin No.: 09-08-52-004A

Date: January 08, 2010

Subject: Diagnostic Tips/Recommendations on GM Accessory 2-Way Remote Start Transmitter When Transmitter Battery is Weak or Dead

Models:

2007-2010 Buick Lucerne

2008-2010 Buick Enclave

2007-2010 Cadillac DTS, Escalade, Escalade ESV, Escalade EXT

2007-2009 Chevrolet Equinox

2007-2010 Chevrolet Avalanche, Cobalt, HHR, Impala, Silverado, Tahoe

2009-2010 Chevrolet Malibu, Traverse

2007-2010 GMC Acadia, Sierra, Yukon

2007-2009 Pontiac G5, G6, Solstice, Torrent

2008-2009 Pontiac G8

2007-2010 Saturn AURA, OUTLOOK, SKY, VUE

2007-2010 HUMMER H2

Supercede:

This bulletin is being revised to update the models and model years. Please discard Corporate Bulletin Number 09-08-52-004 (Section 08 - Body

and Accessories).

Follow these procedures if a customer comments that their GM Accessory 2-way transmitter stopped communicating with the vehicle.

About GM Accessory 2-Way Remote Start

The GM Accessory 2-way transmitter has the ability to operate a second vehicle equipped with a 2-way advanced remote start system, but often the

2-way transmitter may only be coded to one vehicle. If the customer presses the left side button twice within one second, the 2-way transmitter will

enter second vehicle mode and will not control the original vehicle until a subsequent double press of the left side button places the transmitter back

in first vehicle mode. Each vehicle mode of the 2-way transmitter should be thought of as an individual transmitter with its own unique code.

Test the Transmitter Battery

Note

This test should be performed prior to releasing the vehicle or transmitter to the customer.

All transmitter batteries should be tested immediately after installation of a 2-way remote start kit or replacement of a transmitter battery using the

following procedure.

1. Press the unlock button on the transmitter eight times consecutively.

2. After the eighth press of the unlock button, observe the battery gauge located in the upper right corner of the LCD display. The gauge should

read full (three bars inside the battery icon).

If after having a new battery installed, the battery goes dead within five months, the transmitter could have high sleep current, causing the battery to

go dead. Replace the transmitter.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 272

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every

step, the remaining steps do not need to be performed.

Determine if Transmitter is in Second Vehicle Mode

1. Press and release any of the face buttons on the 2-way transmitter and observe the display on power-up.

2. If the 2-way transmitter is in second vehicle mode, the second vehicle icon will be displayed on the left side of the transmitter display. Is the

2-way transmitter in second vehicle mode?

If Yes, the 2-way transmitter is working properly.

- Press and release the left side button twice within one second. The 2-way transmitter should exit second vehicle mode.

- Press and release the lock button. Press and release the unlock button.

- Confirm that the vehicle responds with the appropriate lock and unlock function.

- If Yes , the 2-way transmitter was in mode B.

- Press and release the left side button twice within one second. The 2-way transmitter should enter second vehicle mode.

- Use the "next available slot" method in the scan tool to program the 2-way transmitter to the 2-way RCDLR. Refer to Remote Control

Door Lock Transmitter Programming in SI.

- Both vehicle modes of the 2-way transmitter should now be coded to the vehicle.

If No:

The 2-way transmitter is not exhibiting the failure mode addressed by this bulletin. Refer to normal diagnostic procedures.

Parts Information

For part numbers, usage and availability of 2-way remote start, refer to the Accessory Parts Catalog or Corporate Bulletin Number 09-00-89-025A.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 738

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0173 02

- Upper Left Duct Air Temperature Sensor Circuit Short to Ground

DTC B0173 05

- Upper Left Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B0178 02

- Lower Left Duct Air Temperature Sensor Circuit Short to Ground

DTC B0178 05

- Lower Left Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B0509 02

- Upper Right Duct Air Temperature Sensor Circuit Short to Ground

DTC B0509 05

- Upper Right Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B0514 02

- Lower Right Duct Air Temperature Sensor Circuit Short to Ground

DTC B0514 05

- Lower Right Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B0519 02

- Rear Upper Duct Air Temperature Sensor Circuit Short to Ground

DTC B0519 05

- Rear Upper Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B3583 02

- Rear Lower Duct Air Temperature Sensor Circuit Short to Ground

DTC B3583 05

- Rear Lower Duct Air Temperature Sensor Circuit High Voltage/Open

DTC B3933 02

- Air Conditioning Evaporator Temperature Sensor Circuit Short to Ground

DTC B3933 05

- Air Conditioning Evaporator Temperature Sensor Circuit High Voltage/Open

Circuit/System Description

The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:

* Air temperature sensor - left upper

* Air temperature sensor - left lower

* Air temperature sensor - right upper

* Air temperature sensor - right lower

* Air temperature sensor - rear upper (only with CJ4)

* Air temperature sensor - rear lower (only with CJ4)

* A/C evaporator temperature sensor

A signal and low reference circuit enables the sensor to operate. As the air temperature surrounding the sensor increases, the sensor resistance

decreases. The sensor signal voltage decreases as the resistance decreases. The sensor operates within a temperature range between -40 to +85掳C

(-40 to +185掳F). The sensor signal varies between 0-5 V. The HVAC control module converts the signal to a range between 0-255 counts. As the

air temperature increases the count value will decrease. If the HVAC control module detects a malfunctioning sensor, then the control module

software will use a default air temperature value. The default action ensures that the HVAC system can adjust the inside air temperature near the

desired temperature until the condition is corrected.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 268

瀚慖f all the passenger, left rear and right rear doors will not unlock and open with a single pull of the exterior door handle, refer to

Passenger and Rear Door Release Command Inoperative.

瀚慖f a door will not unlock and open with a single pull of the door handle, refer to Passenger or Rear Door Latch Malfunction.

Circuit/System Testing

Driver Door Latch Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the K84 keyless entry control module.

2. Test for less than 10 ohm between the ground circuit terminal 6 and ground.

瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition OFF, connect the X2 harness connector and disconnect the X4 harness connector at the K84 keyless entry control module.

4. Test for infinite resistance between the control circuit terminal 3 and ground.

瀚慖f less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.

5. Ignition OFF, connect the X4 harness connector at the K84 keyless entry control module.

6. Disconnect the harness connector at the A23D door latch assembly - driver.

7. Connect a test lamp between the control circuit terminal 5 and control circuit terminal 10.

8. Pull and release the exterior driver door handle, the test lamp should briefly illuminate while the exterior door handle is being pulled.

瀚慖f the test lamp is always OFF, test either control circuit for a short to ground or an open/high resistance. If the circuits test normal,

replace the K84 keyless entry control module.

瀚慖f the test lamp is always ON, test either control circuit for a short to voltage. If the circuits test normal, replace the K84 keyless entry

control module.

9. If all circuits test normal, test or replace the A23D door latch assembly - driver.

Passenger and Rear Door Release Command Inoperative

1. Ignition OFF, disconnect the X4 harness connector at the K84 keyless entry control module.

2. Test for infinite resistance between the control circuit terminal 14 and ground.

瀚慖f less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.

3. If all circuits test normal, replace the K84 keyless entry control module.

Passenger or Rear Door Latch Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate A23 door latch assembly.

2. Connect a test lamp between the control circuit terminal 5 and control circuit terminal 10.

3. Pull and release the appropriate exterior door handle, the test lamp should briefly illuminate while the exterior door handle is being pulled.

瀚慖f the test lamp is always OFF, test either control circuit for a short to ground or an open/high resistance. If the circuits test normal,

replace the K84 keyless entry control module.

瀚慖f the test lamp is always ON, test either control circuit for a short to voltage. If the circuits test normal, replace the K84 keyless entry

control module.

4. If all circuits test normal, test or replace the A23 door latch assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Front Side Door Lock Replacement (See: Body and Frame/Locks/Door Locks/Service and Repair/Front Side Door Lock Replacement)

* Rear Side Door Lock Replacement (See: Body and Frame/Locks/Door Locks/Service and Repair/Rear Side Door Lock Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM or keyless entry control module

replacement, setup and programming

B251B

DTC B251A-B251F

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 106

- SDM wiring harness connector

- Roof rail air bag wiring harness connector

- Seat side air bag wiring harness connector

- Passenger instrument panel air bag wiring harness connector

- Seat belt retractor pretensioner wiring harness connector

* The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.

* If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct

the high resistance condition due to terminal fretting corrosion.

Observe the scan tool Deployment Loop Resistance parameters while moving the harness near each connector listed below. The reading should stay

consistently between 1.7 and 4.2 ohm without any drop outs or spikes.

* F105 Passenger instrument panel air bag, and Roof rail air bag

* F106 Seat side air bag

* F112 Seat belt retractor pretensioner

* Any inline harness

* K36 SDM

If the reading is erratic while moving the harness, perform the following:

* Inspect each connector terminal for damage or corrosion and repair as necessary.

* Apply Nyogel lubricant 760G to each connector terminal.

* Insure each connector and CPA is correctly seated.

Circuit/System Testing

DTC B0014-B0018 or B0021-B0045

1. Ignition OFF, disconnect the harness connector at the appropriate F105, F106 air bag or F112 seat belt retractor pretensioner.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for greater than 25 ohm between the control circuit terminals listed below:

* F105 Left roof rail airbag terminal 1 and 2

* F105 Right roof rail airbag terminal 1 and 2

* F106 Driver seat side airbag terminal 1 and 2

* F106 Passenger seat side airbag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

瀚慖f less than the specified range, test for a short between the control circuits, check each connector and CPA to ensure that the shorting

bars are lifted. If the circuits and shorting bars tests normal, replace the K36 SDM.

3. Ignition ON, test for less than 11 V between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.

4. Ignition OFF, test for greater than 25 ohm between the control circuit terminals listed below and ground:

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 1

* F105 roof rail air bag or F106 seat side air bag control circuit terminal 2

* F112 seat belt retractor pretensioner control circuit terminal 1

* F112 seat belt retractor pretensioner control circuit terminal 2

瀚慖f less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

5. Install a 3 A fused jumper wire between the control circuit terminals listed below:

* F105 Left roof rail air bag terminal 1 and 2

* F105 Right roof rail air bag terminal 1 and 2

* F106 Driver seat side air bag terminal 1 and 2

* F106 Passenger seat side air bag terminal 1 and 2

* F112 Driver seat belt retractor pretensioner terminal 1 and 2

* F112 Passenger seat belt retractor pretensioner terminal 1 and 2

6. Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohm.

Thursday, January 30, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 547

Circuit/System Description

The telematics communication interface control module provides the cellular phone microphone with a supplied voltage on the cellular phone

microphone signal circuit. When the microphone is in use, voice data from the user is sent back to the telematics communication interface control

module on the signal circuit. The telematics communication interface control module provides a ground for the cellular phone microphone via the

low reference wire.

Conditions for Running the DTC

* The ignition must be in the RUN or ACC position.

* The system voltage is at least 9.5 V and no more than 15.5 V.

* All the above conditions are present for greater than 10 seconds.

Conditions for Setting the DTC

* The telematics communication interface control module detects an open, short to ground or short to voltage in the cellular phone microphone

signal circuit for 10 seconds or greater.

* The telematics communication interface control module detects an open/high resistance in the low reference circuit for 10 seconds or greater.

Action Taken When the DTC Sets

* The OnStar(R) status LED turns red.

* The telematics communication interface control module will not receive a signal from the cellular phone microphone.

* Calls can be placed but the caller cannot be heard.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.

Reference Information

Schematic Reference

OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

OnStar Description and Operation (See: Accessories and Optional Equipment/Description and Operation/OnStar)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B24 cellular phone microphone.

2. Ignition OFF and scan tool disconnected, wait until all retained accessory power is OFF, test for less than 10 ohm between the low reference

circuit terminal 1 or A (depending on vehicle) and ground, allowing up to 5 minutes for the circuit resistance to drop to its lowest reading.

瀚慖f greater than the specified range, test the circuit for an open/high resistance.

3. Ignition ON, test for 9.5-10.5 V between the signal circuit terminal 2 or B (depending on vehicle) and ground.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 179

DTC B0085 0C

- Left Front Side Impact Sensor Low Current

DTC B0085 39

- Left Front Side Impact Sensor Internal Malfunction

DTC B0085 3A

- Left Front Side Impact Sensor Incorrect Component Installed

DTC B0085 71

- Left Front Side Impact Sensor Invalid Serial Data Received

DTC B0086 01

- Right Front Side Impact Sensor Short to Battery

DTC B0086 02

- Right Front Side Impact Sensor Short to Ground

DTC B0086 04

- Right Front Side Impact Sensor Open

DTC B0086 05

- Right Front Side Impact Sensor High/Voltage Open

DTC B0086 0C

- Right Front Side Impact Sensor Low Current

DTC B0086 39

- Right Front Side Impact Sensor Internal Malfunction

DTC B0086 3A

- Right Front Side Impact Sensor Incorrect Component Installed

DTC B0086 71

- Right Front Side Impact Sensor Invalid Data

DTC B0087 01

- Left Rear Side Impact Sensor Short to Battery

DTC B0087 02

- Left Rear Side Impact Sensor Short to Ground

DTC B0087 04

- Left Rear Side Impact Sensor Open

DTC B0087 05

- Left Rear Side Impact Sensor High/Voltage Open

DTC B0087 0C

- Left Rear Side Impact Sensor Low Current

DTC B0087 39

- Left Rear Side Impact Sensor Internal Malfunction

DTC B0087 3A

- Left Rear Side Impact Sensor Incorrect Component Installed

DTC B0087 71

- Left Rear Side Impact Sensor Invalid Serial Data Received

DTC B0088 01

- Right Rear Side Impact Sensor Short to Battery

DTC B0088 02

- Right Rear Side Impact Sensor Short to Ground

DTC B0088 04

- Right Rear Side Impact Sensor Open

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 3016

DTC Descriptor

DTC U2142 00

- Lost Communication With Yaw Rate Sensor (YRS)

Circuit/System Description

Modules connected to the CAN bus serial data circuits monitor for serial data communications during normal vehicle operation. Operating

information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be

exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an

availability indication of the transmitter module. Each message contains the identification number of the transmitter module.

The electronic brake control module (EBCM) activates the other modules connected to the CAN serial data circuits by applying voltage when the

ignition key is in ACC, ON or START. The EBCM, Yaw Rate and Lateral Acceleration Sensor are the only modules connected to the CAN bus

serial data circuits. For more information on CAN bus serial data refer to Data Link Communications Description and Operation (See: Powertrain

Management/Computers and Control Systems/Information Bus/Description and Operation).

Conditions for Running the DTC

* The system voltage is between 9-16 volts.

* The vehicle power mode master requires serial data communication to occur.

Conditions for Setting the DTC

A supervised periodic message that includes the transmitter module availability has not been received.

Action Taken When the DTC Sets

* The vehicle stability enhancement system (VSES), if equipped, and traction control system (TCS) will not function.

* System OFF lamps will illuminate for these systems.

Conditions for Clearing the DTC

* A current DTC clears when the malfunction is no longer present.

* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

Diagnostic Aids

* Sometimes, while diagnosing a specific customer concern or after a repair, you may notice a history U-code present. However, there is no

associated "current" or "active" status. Loss-of- communication U-codes such as these can set for a variety of reasons. Many times, they are

transparent to the vehicle operator and technician, and/or have no associated symptoms. Eventually, they will erase themselves automatically

after a number of fault-free ignition cycles. This condition would most likely be attributed to one of these scenarios:

- A control module on the data communication circuit was disconnected while the communication circuit is awake.

- Power to one or more modules was interrupted during diagnosis.

- A low battery condition was present, so some control modules stop communicating when battery voltage drops below a certain threshold.

- Battery power was restored to the vehicle and control modules on the communication circuit did not all re-initialize at the same time.

- If a loss-of-communication U-code appears in history for no apparent reason, it is most likely associated with one of the scenarios above.

These are all temporary conditions and should never be interpreted as an intermittent fault, causing you to replace a part.

* A control module may have a U-code stored in history that does not require any repairs. Issues with late or corrupted messages between

control modules can be temporary with no apparent symptom or complaint; this does not mean the control module is faulty. Do not replace a

control module based only on a history U-code.

* Do not replace a control module reporting a U-code. The U-code identifies which control module needs to be diagnosed for a communication

issue.

* Communication may be available between the BCM and the scan tool with either the low or high speed GMLAN serial data system

inoperative. This condition is due to the BCM using both the low and high speed GMLAN systems.

* Use to determine if the module uses high or low speed GMLAN serial data communications.

* Some control modules may not have internal protection for specific control circuits and may open a B+ or ignition fuse. If a fuse is open and

the B+ or ignition circuit is not shorted to ground, ensure none of the control circuits are shorted to ground before replacing the control

module.

* This diagnostic can be used for any control module that is not communicating, regardless of the type of serial data circuit it is connected to,

providing the vehicle is equipped with the control module.

Reference Information

Schematic Reference

* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical

Making Amazing FIST Hammer - Real Hand Made!

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 520

Conditions for Clearing the DTC

* The current DTC will clear and set the code to history 3 seconds after the reference voltage returns to the normal operating range and the

ignition is cycled OFF then back to ACC or RUN.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Reference Information

Schematic Reference

Heated/Cooled Seat Schematics (See: Body and Frame/Seats/Seat Temperature Element/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/Description and Operation/Heated/Vented

Seat)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the X2, X3 harness connectors at the K40 seat memory control module.

2. Test for greater than 3.0 kOhms between the signal and the low reference circuits listed below:

* E14B driver seat cushion terminal 16 X2 and terminal 12 X3

* E14D passenger seat cushion terminal 7 X2 and terminal 1 X3

瀚慖f less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the

appropriate E14 seat cushion heating element.

3. If all circuits test normal, replace the K40 seat memory control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Cushion Heater Replacement (See: Body and Frame/Seats/Seat Temperature Element/Service and Repair/Driver or

Passenger Seat Cushion Heater Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for seat memory control module replacement, setup

and programming

Without Memory A45

DTC B2345 (Without Memory A45)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 558

Circuit/System Testing

1. Verify the Bluetooth (R) antenna is properly connected to the K73 telematics communication interface control module and is not damaged.

瀚慖f the antenna is disconnected or damaged, repair or replace as necessary.

2. Ignition ON, verify the DTC B2485 is not set.

瀚慖f the DTC is set, replace the Bluetooth (R) antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as

current, replace the K73 telematics communication interface control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Wireless Communication Interface Antenna Replacement (See: Accessories and Optional Equipment/Antenna/Service and Repair/Wireless

Communication Interface Antenna Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for telematics communication interface control

module replacement, setup, and programming

Vehicle Access

DTC B2494 (Manual Liftgate)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptor

DTC B2494 00

- Liftgate Handle Switch Circuit

Diagnostic Fault Information

Circuit/System Description

The liftgate release switch is an input to the body control module (BCM). The BCM supplies battery voltage to the signal circuit and when the

release switch is activated the signal circuit voltage goes low. The BCM controls the liftgate release actuator through the liftgate latch release relay.

When the release switch signal is activated, the BCM enables the liftgate latch release relay by applying battery voltage to the liftgate latch release

relay supply circuit and the relay is energized when the BCM grounds the liftgate latch release relay control circuit. When the relay is energized

battery voltage is supplied to the liftgate release actuator through the liftgate release actuator control circuit.

Conditions for Running the DTC

The system voltage is 9-18 V.

Conditions for Setting the DTC

The liftgate release switch signal circuit is active for longer than 10 minutes.

Action Taken When the DTC Sets

The liftgate latch will malfunction.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 143

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC B0014 01

- Driver Seat Side Air Bag Deployment Loop Short to Battery

DTC B0014 02

- Driver Seat Side Air Bag Deployment Loop Short to Ground

DTC B0014 04

- Driver Seat Side Air Bag Deployment Loop Open

DTC B0014 0D

- Driver Seat Side Air Bag Deployment Loop High Resistance

DTC B0014 0E

- Driver Seat Side Air Bag Deployment Loop Low Resistance

DTC B0015 01

- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Battery

DTC B0015 02

- Driver Seat Belt Retractor Pretensioner Deployment Loop Short to Ground

DTC B0015 04

- Driver Seat Belt Retractor Pretensioner Deployment Loop Open

DTC B0015 0D

- Driver Seat Belt Retractor Pretensioner Deployment Loop High Resistance

DTC B0015 0E

- Driver Seat Belt Retractor Pretensioner Deployment Loop Low Resistance

DTC B0016 01

- Left Roof Rail Air Bag Deployment Loop Short to Battery

DTC B0016 02

- Left Roof Rail Air Bag Deployment Loop Short to Ground

DTC B0016 04

- Left Roof Rail Air Bag Deployment Loop Open

DTC B0016 0D

- Left Roof Rail Air Bag Deployment Loop High Resistance

DTC B0016 0E

- Left Roof Rail Air Bag Deployment Loop Low Resistance

DTC B0019 01

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Battery

DTC B0019 02

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Short to Ground

DTC B0019 04

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Open

DTC B0019 0D

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 High Resistance

DTC B0019 0E

- Passenger Instrument Panel Air Bag Deployment Loop Stage 1 Low Resistance

DTC B0020 01

- Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 276

Conditions for Running the DTC

The system voltage is 9-16 V.

Conditions for Setting the DTC

B251A 01

The keyless entry control module detects a short to voltage on the passenger or left rear or right rear door latch motor unlatch low control circuit.

B251A 02

The keyless entry control module detects a short to ground on the passenger or left rear or right rear door latch motor unlatch low control circuit.

B251A 02

The BCM detects a short to ground on the passenger door lock actuator unlock control circuit.

B251B 04

The keyless entry control module detects an open/high resistance in the driver door latch motor unlatch control circuit.

B251B 02

The BCM detects a short to ground on the driver door lock actuator unlock control circuit

B251C 04

The keyless entry control module detects an open/high resistance on the passenger door latch motor unlatch control circuit.

B251D 04

The keyless entry control module detects an open/high resistance on the left rear door latch motor unlatch control circuit.

B251E 04

The keyless entry control module detects an open/high resistance on the right rear door latch motor unlatch control circuit.

Action Taken When the DTC Sets

The affected door will require a pull of the exterior door handle to unlock the door and a second pull of the exterior door handle to open the door.

Conditions for Clearing the DTC

* This DTC will be current for as long as the fault is present

* When the fault is no longer present, the DTC will be a history DTC

* A history DTC will clear after 40 ignition cycles

Diagnostic Aids

DTC B1330 03 and B251A 02 may sent concurrently, correct the condition for setting DTC B1330 03 first before performing diagnostics testing

for B251A 02. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code

(DTC) List - Vehicle) to locate the correct procedure.

Reference Information

Schematic Reference

Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Wednesday, January 29, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 330

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. With a master vehicle key, turn the ignition ON.

2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.

3. Turn the ignition OFF and wait 5 s.

4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.

5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.

6. Using the Red Emergency Button, notify the advisor that the Ignition Block on the vehicle has been cleared and to update the account status.

B305A

DTC B305A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC B305A 00

- No Response From Steering Column Lock Received

Circuit/System Description

The vehicle theft deterrent subsystem provides the capability to lock or unlock the steering electrically. The steering column lock control module is

allowed to unlock when power mode transitions to a non off power mode and an authenticated driver identification device is present. Once the

column is unlocked, a crank request can be allowed.

Conditions for Running the DTC

* The ignition is in OFF, ACCESSORY or RUN position.

* The system voltage is between 9-16 V.

Conditions for Setting the DTC

The body control module (BCM) has not received any response from the steering column lock control module.

Action Taken When the DTC Sets

* DTC B305A is stored in the BCM memory.

* The driver information center displays the service column lock system warning message.

* The steering column lock indicator is ON.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The BCM has received response from the steering column lock control module.

Reference Information

Schematic Reference

Column Lock Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column)

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Technical Service Bulletin # 05-08-46-004C Date: 101223

OnStar(R) - Number Incorrect/Incorrectly Assigned

INFORMATION

Bulletin No.: 05-08-46-004C

Date: December 23, 2010

Subject: OnStar(R) Phone Number Concerns (Phone Number Incorrect/Assigned to Another Vehicle/Phone) That Occur During Diagnosis of

OnStar(R) System

Models:

2000-2011 GM Passenger Cars and Trucks

Equipped with OnStar(R) (RPO UE1)

Supercede:

This bulletin is being revised to update model years up to 2011. Please discard Corporate Bulletin Number 05-08-46-004B (Section 08 - Body and

Accessories).

During diagnosis of an OnStar(R) concern, the technician may be told that the OnStar(R) phone number is incorrect or tied to another vehicle

and/or phone of some kind. To resolve these concerns, the Tech 2(R) with software version 22.005 (or higher), has the capability to change the

OnStar(R) phone number.

Service Procedure

1. With the Tech 2(R), build the vehicle to specifications within the Diagnostics area of the Tech 2(R).

2. For vehicles with physical-based diagnostics - under Body, go to the OnStar(R) section. Then select the Special Functions menu.

For vehicles with functional-based diagnostics - under Body and Accessories, go to the Cellular Communication section. Select Module

Setup and then Vehicle Communication Interface Module.

3. Locate the Program Phone Number prompt and select it. The original phone number will be displayed on the Tech 2(R) screen.

4. Contact the OnStar(R) team at the GM Technical Assistance Center (TAC) to obtain a new phone number.

5. Highlight the digits of the phone number one at a time and enter the new phone number using the number keys on the Tech 2(R).

6. Press the Soft key at the base of the screen for Done once these numbers have been changed on the screen.

7. Press the Soft key for Done again. The area code or new phone number has now been programmed into the phone.

8. Cycle the ignition to Off and open the driver's door.

9. Press the blue OnStar(R) button to make sure that a normal connection can be made to the OnStar(R) call center. If applicable, make sure the

Hands-Free Calling (HFC) works properly by making a phone call.

10. If the system is working properly, fax or voicemail a case closing into the OnStar(R) team at TAC with the results. Dealers in Canada should

submit case closing information through the GM infoNET.

Please follow this diagnostic process thoroughly and complete each step. If the condition exhibited is resolved WITHOUT completing every step,

the remaining steps do not need to be performed. If the procedure above does not resolve the condition, you must contact TAC for further

assistance. This diagnostic approach was developed specifically for this condition and should not automatically be used for other vehicles with

similar symptoms.

Warranty Information (excluding Saab Models)

For vehicles repaired under warranty, use:

Warranty Information (Saab Models)

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 217

For vehicles repaired under warranty, use the table.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 289

Action Taken When the DTC Sets

The BCM will ignore the input from the lockout switch and the child lockout feature will be inoperative.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

Reference Information

Schematic Reference

Door Lock/Indicator Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Door Lock/Indicator Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Power Door Locks Description and Operation (See: Body and Frame/Locks/Power Locks/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, doors locked, command the child lockout function by pressing the child lockout switch, the interior rear door handles should become

inoperative and the lockout indicator should illuminate.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the A20 radio/HVAC control.

2. Ignition ON, test for greater than 10 V between the signal circuit terminal 5 and ground.

瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace

the BCM.

3. If all circuits test normal, test or replace the A20 radio/HVAC control.

Component Testing

Child Lockout Switch Test

1. Ignition OFF, disconnect the X1 harness connector at the A20 radio/HVAC control.

2. Test for infinite resistance between the signal terminal 5 and the ground terminal 17 with the switch in the open position.

瀚慖f less than the specified value, replace the A20 radio/HVAC control.

3. Test for less than 2 ohm between the signal terminal 5 and the ground terminal 17 while holding the switch in the closed position.

瀚慖f greater than the specified range, replace the A20 radio/HVAC control.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM and the radio/HVAC control replacement, setup

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 759

10. Disconnect the harness connector at the K17 Electronic Brake Control Module (EBCM).

11. Test for infinite resistance between the vacuum pump relay control circuit terminal 85 and ground.

瀚慖f less than the specified value, test the control circuit for a short to ground.

12. Connect the KR28 Vacuum Pump Relay.

13. Engine running, momentarily connect a fused jumper wire between the control circuit terminal 35 and ground. Verify the M9 Brake Booster

Pump Motor activates.

瀚慖f the M9 Brake Booster Pump Motor does not activate, test the vacuum pump relay control circuit for an open/high resistance. If the

circuit tests normal, test or replace the KR28 Vacuum Pump Relay.

14. If all circuits test normal, replace the K17 Electronic Brake Control Module (EBCM).

Component Testing

Vacuum Pump Motor Test

1. Ignition OFF, disconnect the harness connector at the M9 Brake Booster Pump Motor.

2. Connect a 20 A fused jumper wire between the control circuit terminal 1 and B+.

3. Connect a jumper wire between the ground circuit terminal 2 and ground, verify the M9 Brake Booster Pump Motor activates.

瀚慖f the M9 Brake Booster Pump Motor does not activate, replace the M9 Brake Booster Pump Motor.

Relay Test

1. Ignition OFF, disconnect the KR28 Vacuum Pump Relay.

2. Test for 60-100 ohm between terminals 85 and 86 of the relay.

瀚慖f not within the specified range, replace the KR28 Vacuum Pump Relay.

3. Test for infinite resistance between the following terminals:

* 30 and 85

* 30 and 86

* 30 and 87

瀚慖f less than the specified value, replace the KR28 Vacuum Pump Relay.

4. Install a fused jumper wire between relay terminal 86 and B+. Install a jumper wire between relay terminal 85 and ground.

5. Test for less than 5 ohm between terminals 30 and 87.

瀚慖f greater than the specified value, replace the KR28 Vacuum Pump Relay.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Power Brake Booster Vacuum Sensor Replacement (See: Brakes and Traction Control/Power Brake Assist/Brake Booster Vacuum

Sensor/Service and Repair)

* Power Vacuum Brake Booster Replacement (See: Brakes and Traction Control/Power Brake Assist/Vacuum Brake Booster/Service and

Repair)

Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, setup and programming

C028A

DTC C028A

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provide an overview of each diagnostic category.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 982

Diagnostic Fault Information

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from

the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received,

the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.

Conditions for Running the DTC

P0231, P023F

The ignition voltage is between 9-18 V.

P0232

The control enable voltage signal supplied for the ECM to fuel pump control module is inactive for 4 seconds after engine has been shut off.

Conditions for Setting the DTC

The fuel pump control module detects a fault on the fuel pump voltage circuit that is less than 11 V or greater than 18 V.

Action Taken When the DTC Sets

DTCs P0231, P0232, and P023F are Type A DTCs.

Conditions for Clearing the DTC

DTCs P0231, P0232, and P023F are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records

can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the

diagnostic test reported a pass and/or a fail.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)Fuel System

Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 598

* Accessory Switch Replacement (See: Instrument Panel, Gauges and Warning Indicators/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, programming and setup

B2750

DTC B2750

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptors

DTC B2750 01

- Horn Relay Secondary Circuit Short to Battery

DTC B2750 02

- Horn Relay Secondary Circuit Short to Ground

DTC B2750 04

- Horn Relay Secondary Circuit Open

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) provides a ground for the Horn PCB relay within the underhood fuse block. The underhood fuse block will then

provide B+ voltage to the horn control circuit, sounding the horn.

Conditions for Running the DTC

When the horn output is actively being requested by the BCM.

Conditions for Setting the DTC

B2750 01

The BCM detects a short to voltage in the horn relay control circuit.

B2750 02

The BCM detects a short to ground in the horn relay control circuit.

B2750 04

The BCM detects an open/high resistance in the horn relay control circuit.

Action Taken When the DTC Sets

B2750 01, B2750 04

The horn will be inoperative.

Tuesday, January 28, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 495

Circuit/System Description

The seat memory control module supplies a reference voltage to each signal circuit of the driver seat adjuster switch. When the power seat switches

are pressed, the appropriate signal circuit from the seat memory control module is pulled low through the switch contacts indicating the power seat

command. The seat memory control module then commands the driver seat to move in response to the switch signals.

Conditions for Running the DTC

* DTC B1325 must not be present.

* Module battery voltage must be between 9 - 16 V.

Conditions for Setting the DTC

* If a seat switch circuit is active in one direction and the switch for the opposite direction is pressed, this DTC will set.

* A short to ground on a switch signal circuit.

Action Taken When the DTC Sets

* A motor output driven in response to a switch considered failed, is deactivated for both directions.

* All memory recall commands are ignored.

* The seat memory control module will respond to any other switch signal that has not set a DTC.

Conditions for Clearing the DTC

* The current DTC will clear and set the code to history, when the fault is no longer present and the ignition is cycled OFF then back to ACC

or RUN.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Diagnostic Aids

* If one of the switch signal circuits is shorted to ground, multiple codes will set.

* If a switch is stuck in one direction and the switch is pressed in the opposite direction, a single code will set.

Reference Information

Schematic Reference

Driver Seat Schematics (See: Body and Frame/Seats/Diagrams/Electrical Diagrams/Driver Seat Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Memory Seats Description and Operation (See: Body and Frame/Seats/Description and Operation/Memory Seats)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 197

* Impact sensor wiring harness connector

* SDM wiring harness connector

Note: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the

high resistance condition due to terminal fretting corrosion.

1. Verify that DTC B0083-B0088 symptom byte 39 or 71 is not set as current.

瀚慖f symptom byte 39 or 71 is set as current, replace the appropriate B59 front impact sensor or B63 side impact sensor.

2. Verify that the SDM calibrations match the VIN data, software part number, and calibration part number.

瀚慖f not the correct data or part number, program the SDM.

3. Verify the correct impact sensors have the correct part numbers, matching the label part numbers with the parts book.

瀚慖f the part numbers do not match, replace the incorrect B59 front impact sensor or B63 side impact sensor

4. Verify that DTC B0083-B0088 symptom byte 01, 02, 04, 05, or 0C is not set as current.

瀚慖f symptom byte 01, 02, 04, 05, or 0C is set as current, refer to Circuit/System Testing.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B59 front impact sensor or B63 side impact sensor.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for less than 10 ohm between the low reference circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K36

SDM.

3. Test for greater than 50k ohm between the signal circuit terminal 1 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

4. Disconnect the harness connector at the SDM.

5. Test for less than 1 ohm between the impact sensor signal circuit terminal 1 and the SDM terminal listed below.

* B59 Left front impact sensor terminal 23 X2

* B59 Right front impact sensor terminal 26 X2

* B63 Left front side impact sensor terminal 19 X2

* B63 Right front side impact sensor terminal 22 X2

* B63 Left rear side impact sensor terminal 27 X2

* B63 Right rear side impact sensor terminal 30 X2

瀚慖f greater than the specified range, test the circuit for an open/high resistance.

6. If all circuits test normal, replace the B59 front impact sensor or B63 side impact sensor. The DTC should not be set as current.

瀚慖f the DTC resets as current, replace the K36 SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Inflatable Restraint Side Impact Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and

Repair/Inflatable Restraint Side Impact Sensor Replacement)

* Front End Inflatable Restraint Discriminating Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact

Sensor/Service and Repair/Front End Inflatable Restraint Discriminating Sensor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B096A

DTC B096A

Diagnostic Instructions

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 620

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Verify none of the following DTCs are set:

* DTC B3109

* DTC B3110

* DTC B3111

* DTC B3112

* DTC B3113

If any of the DTCs are set, replace the battery in the appropriate keyless entry transmitter. Operate the transmitter 3 consecutive times. If the DTC

resets, replace the keyless entry transmitter.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Replacing Keys (See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Service and Repair/Replacing Keys)

B3113

DTC B3109-B3113

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptors

DTC B3109 00

- Keyless Entry Transmitter 1 Battery

DTC B3110 00

- Keyless Entry Transmitter 2 Battery

DTC B3111 00

- Keyless Entry Transmitter 3 Battery

DTC B3112 00

- Keyless Entry Transmitter 4 Battery

DTC B3113 00

- Keyless Entry Transmitter 5 Battery

Circuit/System Description

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control

door lock receiver, along with the commanded keyless entry function. The remote control door lock receiver sends this to the body control module

(BCM) to perform the requested function.

Conditions for Running the DTC

A keyless transmitter button is pressed.

Conditions for Setting the DTC

3 consecutive low battery signals are received from the same transmitter.

Action Taken When the DTC Sets

The keyless entry system is inoperative.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 187

* Impact sensor wiring harness connector

* SDM wiring harness connector

Note: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an

audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace

any CPA that is damaged or missing.

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the

high resistance condition due to terminal fretting corrosion.

1. Verify that DTC B0083-B0088 symptom byte 39 or 71 is not set as current.

瀚慖f symptom byte 39 or 71 is set as current, replace the appropriate B59 front impact sensor or B63 side impact sensor.

2. Verify that the SDM calibrations match the VIN data, software part number, and calibration part number.

瀚慖f not the correct data or part number, program the SDM.

3. Verify the correct impact sensors have the correct part numbers, matching the label part numbers with the parts book.

瀚慖f the part numbers do not match, replace the incorrect B59 front impact sensor or B63 side impact sensor

4. Verify that DTC B0083-B0088 symptom byte 01, 02, 04, 05, or 0C is not set as current.

瀚慖f symptom byte 01, 02, 04, 05, or 0C is set as current, refer to Circuit/System Testing.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B59 front impact sensor or B63 side impact sensor.

2. Ignition OFF, disconnect the scan tool, wait 120 seconds, test for less than 10 ohm between the low reference circuit terminal 2 and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K36

SDM.

3. Test for greater than 50k ohm between the signal circuit terminal 1 and ground.

瀚慖f less than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K36 SDM.

4. Disconnect the harness connector at the SDM.

5. Test for less than 1 ohm between the impact sensor signal circuit terminal 1 and the SDM terminal listed below.

* B59 Left front impact sensor terminal 23 X2

* B59 Right front impact sensor terminal 26 X2

* B63 Left front side impact sensor terminal 19 X2

* B63 Right front side impact sensor terminal 22 X2

* B63 Left rear side impact sensor terminal 27 X2

* B63 Right rear side impact sensor terminal 30 X2

瀚慖f greater than the specified range, test the circuit for an open/high resistance.

6. If all circuits test normal, replace the B59 front impact sensor or B63 side impact sensor. The DTC should not be set as current.

瀚慖f the DTC resets as current, replace the K36 SDM.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Inflatable Restraint Side Impact Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact Sensor/Service and

Repair/Inflatable Restraint Side Impact Sensor Replacement)

* Front End Inflatable Restraint Discriminating Sensor Replacement (See: Restraints and Safety Systems/Air Bag Systems/Impact

Sensor/Service and Repair/Front End Inflatable Restraint Discriminating Sensor Replacement)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming

B0087

DTC B0083-B0088

Diagnostic Instructions

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 145

Circuit/System Description

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the

deployment loop in order to deploy an air bag. There are 2 shorting bars used within the module connector which will short together control

circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

B0014 01, B0015 01, B0016 01, B0019 01, B0020 01, B0021 01, B0022 01, B0023 01

The air bag or retractor pretensioner control circuit is shorted to voltage for 2 seconds.

B0014 02, B0015 02, B0016 02, B0019 02, B0020 02, B0021 02, B0022 02, B0023 02

The air bag or retractor pretensioner control circuit is shorted to ground for 2 seconds.

B0014 04, B0015 04, B0016 04, B0019 04, B0020 04, B0021 04, B0022 04, B0023 04

The air bag or retractor pretensioner control circuit is open for 2 seconds.

B0014 0D, B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0021 0D, B0022 0D, B0023 0D

The air bag or retractor pretensioner deployment loop resistance is greater than 4.2 ohm for 2 seconds.

B0014 0E, B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0021 0E, B0022 0E, B0023 0E

The air bag or retractor pretensioner deployment loop resistance is less than 1.4 ohm for 2 seconds.

Action Taken When the DTC Sets

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Technical Service Bulletin # 06-00-89-031B Date: 110328

Engine, A/T - Identification Information

INFORMATION

Bulletin No.: 06-00-89-031B

Date: March 28, 2011

Subject: Engine and Automatic Transmission/Transaxle Identification

Models:

2004-2012 GM Passenger Cars and Trucks

Supercede:

This bulletin in being revised to add the 2012 model year and update the engines listed. Please discard Corporate Bulletin Number 06-00-89-031A

(Section 00 - General Information).

The purpose of this bulletin is to show dealers and retailers how to find engine and automatic transmission/transaxle identification information for

original equipment and remanufactured assemblies.

All original equipment identification information is available in SI. To easily find the information for the vehicle line you are working on, select the

vehicle type and type the word "identification" in the search box. This search (described below) will provide the list of the different assemblies to

choose from.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 201

1. Type in the word "identification" in the search dialog box.

2. The different engine and transmission assemblies available for that vehicle will be displayed. Click the link for the desired engine and/or

transmission identification information.

Remanufactured Engine and Transmission Labeling

All remanufactured transmission labels are in the same location as the original equipment labels and location can be found by using the method

above.

All remanufactured engines have a label on the right or left side of the block. A list is provided below to indicate which side of the block the label

may be found for each engine application.

Right Side of Block

- 2.4L (Quad 4)

- 2.5L

- 2.8L/3.5L/3.7L/4.2L (I4/I5/I6)

- 3.1L/3.4L/3.5L/3.9L (HV V6)

- 3.8L

- 4.3L

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 202

- 4.6L (PV8)

- 6.0L/7.4L/8.1L (Big Block)

Left Side of Block

- 2.2L/2.4L (Ecotec)

- 4.8L/5.3L/6.0L/6.2L(Gen III/Gen IV)

Monday, January 27, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 911

Conditions for Clearing the DTC

A current DTC clears when the diagnostic runs and passes.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The reading should be the same speed on all sensors when driving in a

straight line at a speed greater than 20 km/h (13 MPH).

Circuit/System Testing

1. Ignition ON, verify that DTC C0035, C0040, C0045, or C0050 is not present in the EBCM.

瀚慖f any listed DTC is present, refer to DTC C0035, C0040, C0045, or C0050 (See: C Code Charts/C0035) to diagnose that DTC prior to

this diagnostic.

2. Replace the K17 Electronic Brake Control Module (EBCM) and verify the DTC does not reset.

瀚慖f the DTC resets, replace the module that set the DTC.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for module replacement, setup and programming

C1255

DTC C1255 or C1256

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions)provides an overview of each diagnostic category.

DTC Descriptors

DTC C1255 00

- Electronic Control Unit Performance Malfunction

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 3006