Contents Wiring diagrams Section: Communication Devices All sections

Programming and Setup - All Systems Buick LaCrosse II

Communication Devices 2 illustrations ~9712 words

Control Module References

CodeControl Module/Scan Tool InformationSchematicRepair InstructionProgramming and Setup
Data Link References Diagnostic System Check - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle Symptoms - Vehicle
K16Battery Energy Control Module Scan Tool InformationHybrid Energy Storage SchematicsBattery Energy Control Module ReplacementBattery Energy Control Module Programming and Setup
K9Body Control Module Scan Tool InformationBody Control System SchematicsBody Control Module ReplacementBody Control Module Programming and Setup
K73Communication Interface Module Scan Tool InformationOnStar SchematicsCommunication Interface Module ReplacementCommunication Interface Module Programming and Setup
K71Control Solenoid Valve and Transmission Control Module Assembly Transmission Control Module Scan Tool Information (6T70/6T75) , Transmission Control Module Scan Tool Information (6T30/6T40/6T45/6T50)Automatic Transmission Controls Schematics for the 6T30/6T40/6T45 transmission or Automatic Transmission Controls Schematics for the 6T70/6T75 transmissionControl Solenoid Valve and Transmission Control Module Assembly Replacement for the 6T30/6T40/6T45 transmission or Control Solenoid Valve and Transmission Control Module Assembly Replacement for the 6T70/6T75 transmissionControl Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T30/6T40/6T45/6T50) , Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T70/6T75)
K40Driver Seat Adjuster Memory Module Scan Tool InformationDriver Seat Schematics or Passenger Seat SchematicsDriver or Passenger Seat Adjuster Memory Module ReplacementMemory Seat Control Module Programming and Setup
K29Driver Seat and Passenger Seat Heater Control Module Scan Tool InformationHeated/Cooled Seat SchematicsFront Seat Heater Control Module ReplacementHeated Seat Control Module Programming and Setup
K17Electronic Brake Control Module Scan Tool InformationAntilock Brake System SchematicsElectronic Brake Control Module Replacement or Electronic Brake and Traction Control Module with Brake Pressure Modulator Valve ReplacementElectronic Brake Control Module Programming and Setup
K18Electronic Compass ModuleInstrument Cluster SchematicsElectronic Compass Module ReplacementElectronic Compass Module Programming and Setup
K83Electronic Parking Brake Control Module Scan Tool InformationPark Brake System SchematicsElectronic Parking Brake Control Module ReplacementElectronic Parking Brake Control Module Programming and Setup
K19Electronic Suspension Control Module Scan Tool InformationElectronic Suspension Control SchematicsElectronic Suspension Control Module ReplacementElectronic Suspension Control Module Programming and Setup
K20Engine Control Module Scan Tool Information (LFX or LFW) , Engine Control Module Scan Tool Information (LUK)Engine Controls Schematics (LUK) for the 2.2L or 2.4L engine or Engine Controls Schematics (LFX) for the 2.8L, 3.0L, 3.2L, or 3.6L engineEngine Control Module Replacement for the 2.2L or 2.4L engine or Engine Control Module Replacement for the 2.8L, 3.0L, 3.2L, or 3.6L engineEngine Control Module Programming and Setup
K27Fuel Pump Flow Control Module Scan Tool InformationEngine Controls Schematics (LUK) for the 2.2L or 2.4L engine or Engine Controls Schematics (LFX) for the 2.8L, 3.0L, 3.2L, or 3.6L engineFuel Pump Flow Control Module Replacement for the 2.2L or 2.4L engine or Fuel Pump Flow Control Module Replacement for the 2.8L, 3.0L, 3.2L, or 3.6L engineFuel Pump Flow Control Module Programming and Setup
S25Garage Door OpenerRemote Function SchematicsGarage Door Opener Transmitter ReplacementGarage Door Opener Programming and Setup
K59 K107AGenerator Control Module Hybrid Powertrain Control Module Scan Tool Information Drive Motor Control Module Scan Tool InformationHybrid Controls SchematicsGenerator Control Module ReplacementGenerator Control Module Programming and Setup
K26Headlamp Control Module Scan Tool InformationHeadlights/Daytime Running Lights (DRL) SchematicsHeadlamp Control Module ReplacementHeadlamp Control Module Programming and Setup
P29Head-Up Display Scan Tool InformationHead-Up Display SchematicsHead-Up Display ReplacementHead-Up Display Programming and Setup
K33Heating, Ventilation and Air Conditioning Control Module Scan Tool InformationHVAC SchematicsHeater and Blower and Air Conditioning Control Module ReplacementHVAC System Control Module Programming and Setup
K85Inflatable Restraint Passenger Presence System Scan Tool InformationSIR SchematicsInflatable Restraint Front Passenger Presence Sensor ReplacementPassenger Presence System Programming and Setup
K36Inflatable Restraint Sensing and Diagnostic Module Scan Tool InformationSIR SchematicsAirbag Sensing and Diagnostic Module ReplacementInflatable Restraint Sensing and Diagnostic Module Programming and Setup
P16Instrument Cluster Scan Tool InformationInstrument Cluster SchematicsInstrument Cluster ReplacementInstrument Cluster Programming and Setup
K84Keyless Entry Control Module Scan Tool InformationRelease Systems SchematicsKeyless Entry Control Module ReplacementKeyless Entry Control Module Programming and Setup
T11Multimedia Player Interface Module Scan Tool InformationRadio/Navigation System SchematicsMultimedia Player Interface Module ReplacementMultimedia Player Interface Module Programming and Setup
K41Object Alarm Module Scan Tool InformationObject Detection SchematicsRear Object Alarm Control Module ReplacementObject Alarm Module Programming and Setup
K43Power Steering Control Module (Electronic Power Steering)Power Steering SchematicsPower Steering Assist Motor ReplacementPower Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering)
K43Power Steering Control Module Scan Tool Information (Variable Effort Steering)Power Steering SchematicsSteering Power Variable Control Module ReplacementPower Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering)
A11Radio Scan Tool InformationRadio/Navigation System SchematicsRadio ReplacementRadio Programming and Setup
A20Radio Control AssemblyRadio/Navigation System SchematicsRadio Control Assembly ReplacementRadio Control Programming and Setup
T3Radio Speaker AmplifierRadio/Navigation System SchematicsRadio Speaker Amplifier ReplacementAudio Amplifier Programming and Setup
P17Rearview Camera Image Display ModuleVideo System SchematicsRearview Camera Image Display Module ReplacementRearview Camera Image Display Module Programming and Setup
K47Rear Differential Clutch Control Module Scan Tool InformationRear Axle SchematicsRear Differential Clutch Control Module ReplacementRear Differential Clutch Control Module Programming and Setup
K77Remote Control Door Lock ReceiverDoor Lock/Indicator SchematicsRemote Control Door Lock Receiver ReplacementRemote Control Door Lock Receiver Programming and Setup
B94L/RSide Object Sensor Module Scan Tool InformationObject Detection SchematicsSide Object Sensor ReplacementThis device does not require programming or setup
K32Steering Wheel Heat Control ModuleSteering Wheel SchematicsSteering Wheel Heat Control Module ReplacementSteering Wheel Heat Control Module Programming and Setup
K61Sunroof Window MotorSunroof SchematicsSunroof Window Motor ReplacementSunroof Control Module Programming and Setup
K9Theft Deterrent ModuleTheft Deterrent System SchematicsTheft Deterrent Module Replacement (Without BTM) , Theft Deterrent Module Replacement (With BTM)Theft Deterrent Module Programming and Setup

Control Module References

Accessory AC and DC Power Control Module Programming and Setup

This module does not require programming or setup.

Replace and Program ECU or Reprogram ECU

This ECU does not require SPS programming or any setup procedures.

Battery Energy Control Module Programming and Setup

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

Diagnostic Aids

Replace and Program ECU or Reprogram ECU

To program a replacement or an existing ECU, perform the following procedure

  1. Install the EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Battery Energy Control Module - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the"Clear All DTCs" function on the SPS screen.

Unsuccessful Programming Recovery

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Blower Motor Control Module Replacement

There is no setup procedure that needs to be performed for the blower motor control module on this vehicle.

Special Tools

  1. EL-49642 SPS Programming Support Tool
  2. EL-46079 Tire Pressure Monitor Diagnostic Tool

For equivalent regional tools, refer to Special Tools .

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

Replace and Program ECU

To program a replacement body control module (BCM), perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select BCM Body Control Module - Configuration and follow the on-screen instructions (if applicable).
  4. On the SPS Supported Controllers screen, select BCM Body Control Module - Programming and follow the on-screen instructions.
  5. Perform the following for the appropriate ignition type prior to proceeding with the next step: Key Ignition System: Key in the ignition and any additional keys must be away from the vehicle at least 3 meters. Push Button Start System: Keyless entry transmitter must be in the console programming pocket. Refer to the Help selection button on the SPS Immobilizer Setup screen for the exact pocket location. All additional transmitters must be away from the vehicle at least 3 meters.
  6. On the SPS Supported Controllers screen, select IMMO Immobilizer Learn - Setup. On the next screen, select Body Control Module IMMO Learn with Existing Transponder or Remote Key and follow the on-screen instructions. When Immobilizer Learn is complete, press the Unlock button on the keyless entry transmitter to allow the keyless entry transmitter to exit the Immobilizer Learn mode.
  7. On the SPS Supported Controllers screen, select BCM Body Control Module - Setup and follow the on-screen instructions.
  8. Check the driver information center display for additional messages regarding further calibration instructions. If there are no additional driver information center instructions present, programming is complete.
  9. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
  10. If ABS, Traction Control and/or Stabilitrak indicators are ON and DTC C0161 is set in the electronic brake control module after performing BCM programming and setup, do the following: Disconnect the scan tool from the data link connector. Ignition OFF, all access doors closed, all vehicle systems OFF, and all keys at least 3 meters away from the vehicle. It may take up to 2 minutes to power down. Ignition ON, verify DTC C0161 is in history. If not, repeat the above step to make sure the vehicle is in sleep mode. Use the scan tool to clear the DTCs.

Reprogram ECU

To program an existing BCM, perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select BCM Body Control Module - Programming and follow the on-screen instructions.
  4. On the SPS Supported Controllers screen, select BCM Body Control Module - Setup and follow the on-screen instructions.
  5. Check the driver information center display for additional messages regarding further calibration instructions. If there are no additional driver information center instructions present, programming is complete.
  6. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
  7. If ABS, Traction Control and/or Stabilitrak indicators are ON and DTC C0161 is set in the electronic brake control module after performing BCM programming and setup, do the following: Disconnect the scan tool from the data link connector. Ignition OFF, all access doors closed, all vehicle systems OFF, and all keys at least 3 meters away from the vehicle. It may take up to 2 minutes to power down. Ignition ON, verify DTC C0161 is in history. If not, repeat the above step to make sure the vehicle is in sleep mode. Use the scan tool to clear the DTCs.

Unsuccessful Programming Recovery

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Communication Interface Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Each of the following service procedures require programming or setup procedures to be performed on the communication interface module.

Communication Interface Module Replacement

Note. It is critical to use the service replacement Communication Interface Module only in the vehicle for which it was ordered. Failure to perform the following procedures will result in a red LED, DTC(s) being set, and limited or incomplete OnStar® services. An OnStar® button press to the OnStar® call center is not required to complete the procedure. It may take up to 24 hours for OnStar® service to become fully activated after performing the procedures. Perform the following procedure only once. Repeat attempts of the procedure may result in a delay of the activation process. To fully activate an OnStar® module, both the setup and activation request procedures must be completed on all vehicles with and without an active OnStar® subscription to insure the unit has been setup properly for the vehicle it has been installed into and also to update the OnStar® with the correct unit information. To initialize the Turn-by-Turn feature, the vehicle must first be driven In open sky condition at speeds greater than 10 mph (16 kph) or more for a minimum of 5 miles (8 km), and perform at least 2 left and 2 right 90 degree turns coming to complete stops prior to each turn. On vehicles up fitted with TTY capabilities, it is necessary to perform a power cycle of the OnStar® Interface Module (OTIM), and toggle the TTY mode after completing the Communication Interface Module installation and setup procedures.

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select ONSU Onstar® Module Setup and Service Activation and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
  5. The default language for the new Communication Interface Module is English. To change to an alternate language, access the scan tool.
  6. Inform the customer that it may take up to 24 hours for the OnStar® service to become fully activated.

Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T70/6T75)

The following service procedures require either a programming or a setup event be performed for a complete repair. The transmission control module (TCM) is part of the control solenoid (w/body and TCM) valve assembly, and is not serviced separately.

Transmission Control Module (TCM) Replacement

If the TCM is replaced, the following procedures must be performed

  1. TCM Reprogramming
  2. The Reset Transmission Adapts - Refer to «Reset Transmission Adapts»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t70-diagnostic-information-and-procedures__reset-transmission-adapts) .

TCM Reprogramming

  1. If the TCM needs to be reprogrammed, refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the Reset Transmission Adapts - Refer to «Reset Transmission Adapts»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t70-diagnostic-information-and-procedures__reset-transmission-adapts) .
  1. Turn the ignition OFF for 30 seconds.
  2. Turn the ignition ON with the engine OFF.
  3. Use the scan tool in order to retrieve history DTCs from all modules.
  4. Clear all history DTCs.

Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.

If any of the following components are replaced, the Reset Transmission Adapts procedure must be performed

  1. Transmission replacement
  2. Any internal transmission repair
  3. Any speed sensor

Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T30/6T40/6T45/6T50)

The following service procedures require either a programming or a setup event be performed for a complete repair. The transmission control module (TCM) is part of the control solenoid valve assembly, and is not serviced separately.

If the TCM is replaced, the following procedures must be performed

  1. TCM Reprogramming
  2. The Transmission Adaptive Values Learn. Refer to «Transmission Adaptive Values Learn»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t40-diagnostic-information-and-procedures__transmission-adaptive-values-learn) .
  1. If the TCM needs to be reprogrammed. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the Transmission Adaptive Values Learn. Refer to «Transmission Adaptive Values Learn»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t40-diagnostic-information-and-procedures__transmission-adaptive-values-learn) .
  1. Turn the ignition OFF for 30 seconds.
  2. Turn the ignition ON with the engine OFF.
  3. Use the scan tool in order to retrieve history DTCs from all modules.
  4. Clear all history DTCs.

The replacement of some components will require a setup procedure for complete repair.

If any of the following components are replaced, the Transmission Adaptive Values Learn procedure must be performed

  1. Transmission replacement
  2. Any internal transmission repair
  3. Any speed sensor

Electronic Brake Control Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Replace and Program EBCM or Reprogram EBCM

To program a replacement or an existing EBCM, perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Electronic Brake Control Module-Programming and follow the on-screen instructions.
  4. On the SPS Supported Controllers screen, select Electronic Brake Control Module-Setup and follow the on-screen instructions.
  5. On the SPS Supported Controllers screen, select Electronic Brake Control Module-Configuration and follow the on-screen instructions.
  6. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
  7. With a scan tool access the Electronic Brake Control Module, Configuration/Reset Functions, Brake Pressure Sensor Calibration. Refer to «Brake Pressure Modulator Valve Pressure Sensor Calibration»(/buick/lacrosse/ii-2009-2013/remont/anti-locktraction-control/#antilock-brake-system__brake-pressure-modulator-valve-pressure-sensor) .
  8. With a scan tool, access the Electronic Brake Control Module, Configuration/Reset Functions, Steering Wheel Angle Sensor Learn. Refer to «Steering Angle Sensor Centering»(/buick/lacrosse/ii-2009-2013/remont/anti-locktraction-control/#antilock-brake-system__steering-angle-sensor-centering) .

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the Ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the Ignition OFF for at least one minute.
  4. Turn the Ignition ON, and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Electronic Compass Module Programming and Setup

This device requires no programming or setup.

Electronic Parking Brake Control Module Programming and Setup

If the electronic parking brake control module is replaced, the following procedures must be performed

Calibration with Scan Tool

Note. Verify the rear brakes are clear of any obstacles before starting the calibration procedure. During the procedure the rear brakes will cycle several times, stay clear of all moving parts until the process is complete.

Perform the Parking Brake Calibration procedure in Module Setup.

Calibration without Scan Tool

  1. Ignition ON, apply and hold the brake pedal.
  2. Push and hold the electric parking brake switch down for 5-6 seconds.
  3. Release the electric parking brake switch.
  4. Momentarily push the electric parking brake switch down.
  5. Remove the EPB MODULE fuse and reinstall.
  6. Apply the electric parking brake.
  7. Release the electric parking brake.

Electronic Suspension Control Module Programming and Setup

The following service procedures require either a programming or a setup event performed for a complete repair.

Electronic Suspension Control Module Replacement

If the electronic suspension control module or any of the suspension position sensors need to be replaced, the following procedures must be performed

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Electronic Suspension Control Module - Programming and follow the on-screen instructions.
  3. Perform the SPS function Electronic Suspension Control Module - Configuration & Setup and follow the on-screen instructions.
  4. Clear DTCs after completing the programming procedure.

Electronic Suspension Control Module Reprogramming

If the electronic suspension control module needs to be reprogrammed, the following procedures must be performed

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Electronic Suspension Control Module - Programming and follow the on-screen instructions.
  3. Clear DTCs after completing the programming procedure.

Engine Control Module Programming and Setup

The following service procedures require either a programming or a setup event performed for a complete repair.

ECM Replacement

If the engine control module (ECM) is replaced, the following procedures must be performed

  1. ECM Reprogramming-Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Theft Deterrent-Refer to «Immobilizer System Component Programming (without BTM)»(/buick/lacrosse/ii-2009-2013/remont/door-locks-anti-theft-systems/#immobilizer-system) , «Immobilizer System Component Programming (with BTM)»(/buick/lacrosse/ii-2009-2013/remont/door-locks-anti-theft-systems/#immobilizer-system) .
  3. Brake Pedal Position Sensor Learn-Refer to the following: For vehicles equipped with Automatic Transmission - 6T30/6T40/6T45/6T50, refer to «Brake Pedal Position Sensor Learn»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t40-diagnostic-information-and-procedures__brake-pedal-position-sensor-learn) . For vehicles equipped with Automatic Transmission - 6T70/6T75, refer to «Brake Pedal Position Sensor Learn»(/buick/lacrosse/ii-2009-2013/remont/automatic-trans/#automatic-transmission-6t70-diagnostic-information-and-procedures__brake-pedal-position-sensor-learn) .
  4. The CKP System Variation Learn-Refer to «Crankshaft Position System Variation Learn»(/buick/lacrosse/ii-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-24l-repair-instructions__crankshaft-position-system-variation-learn) .
  5. The Throttle/Idle Learn procedure-Refer to «Throttle/Idle Learn»(/buick/lacrosse/ii-2009-2013/remont/testing-diagnostics/#engine-controlsfuel-24l-repair-instructions) .
  6. Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was replaced.
  7. Transmission Fluid Life Remaining-When available, use the scan tool to reset the Transmission Fluid Life Remaining back to the original percentage recorded before the module was replaced.

ECM Reprogramming

  1. If the ECM needs to be reprogrammed, refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.
  1. Turn the ignition OFF for 30 seconds.
  2. Turn the ignition ON with the engine OFF.
  3. Use the scan tool in order to retrieve history DTCs from all modules.
  4. Clear all history DTCs.

The replacement of some components will require a setup procedure for complete repair.

If any of the following components are replaced, the CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn .

  1. Engine replacement
  2. Any engine repair that disturbs the CKP sensor or its relationship with the crankshaft reluctor wheel
  3. CKP sensor

If the throttle body is replaced or a throttle body cleaning procedure is completed, the Throttle/Idle Learn Procedure must be performed. Refer to Throttle/Idle Learn .

Fuel Pump Flow Control Module Programming and Setup

The fuel pump control module must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the fuel pump control module will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for fuel pump control module programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the fuel pump control module unless directed by a service procedure or a service bulletin.

Fuel Pump Control Module Programming

To program and setup an existing or new replacement fuel pump control module, perform the following procedure

  1. Access the Service Programming System (SPS) and follow the on-screen instructions. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. On the SPS Supported Controllers screen, select K27 Fuel Pump Control Module - Programming and follow the on-screen instructions.

If the fuel pump control module fails to accept the program, verify all scan tool and fuel pump control module connections are secure.

Note. After programming is completed, perform the following to avoid future misdiagnosis: Turn the ignition OFF for 10 seconds. Open and close the door. Connect the scan tool to the data link connector. Ignition ON, engine OFF. Clear all DTC's from all modules.

This ECU does not require SPS programming but does require the following setup procedures after a new ECU is installed

The customer must learn the device they wish to control. This must be done at the device (garage door opener, electric gate, etc.) and cannot be performed at a dealership. Refer to the vehicle owner's manual for programming instructions.

Generator Control Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS programming support tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

To program a replacement or an existing ECU, perform the following procedure

  1. Install the EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Generator Control Module - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least 1 minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Headlamp Control Module Programming and Setup

The headlamp control module must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the headlamp control module will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for headlamp control module programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the headlamp control module unless directed by a service procedure or a service bulletin.

Headlamp Control Module Programming

To program and setup an existing or new replacement headlamp control module, perform the following procedure

  1. With a scan tool, access the Service Programming System (SPS) and follow the on-screen instructions. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. On the SPS Supported Controllers screen, select Headlamp Control Module - Programming and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Headlamp Control Module - Setup and follow the on-screen instructions.

If the headlamp control module fails to accept the program, verify all scan tool and headlamp control module connections are secure.

Note. After programming is completed, perform the following to avoid future misdiagnosis: Turn the ignition OFF for 10 seconds. Open and close the door. Connect the scan tool to the data link connector. Ignition ON, engine OFF. With a scan tool, clear all DTC's from all modules.

Head-Up Display Programming and Setup

This device requires no programming or setup.

Heated Seat Control Module Programming and Setup

The seat heating control module must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the seat heating control module will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for seat heating control module programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the seat heating control module unless directed by a service procedure or a service bulletin.

Seat Heating Control Module Programming

To program and setup an existing or new replacement seat heating control module, perform the following procedure

  1. Access the Service Programming System (SPS) and follow the on-screen instructions. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. On the SPS Supported Controllers screen, select HVSMF Front Seat Heating Control Module - Programming and follow the on-screen instructions.

If the HVSMF Front Seat Heating Control Module fails to accept the program, verify all scan tool and seat heating control module connections are secure.

Note. After programming is completed, perform the following to avoid future misdiagnosis: Turn the ignition OFF for 10 seconds. Open and close the door. Connect the scan tool to the data link connector. Ignition ON, engine OFF. Clear all DTCs from all modules.

HVAC System Control Module Programming and Setup

The following service procedures require either a programming or a setup event performed for a complete repair.

HVAC Control Module Replacement

If the HVAC control module needs to be replaced, the following procedures must be performed

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Remote Heater and Air Conditioning Control Module Programming and follow the on-screen instructions.
  3. Perform the SPS function Remote Heater and Air Conditioning Control Module Configuration & Setup and follow the on-screen instructions.
  4. Clear DTCs after completing the programming procedure.

HVAC Control Module Reprogramming

Do not reprogram the HVAC control module unless directed by a service procedure or a service bulletin.

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Remote Heater and Air Conditioning Control Module Programming and follow the on-screen instructions.
  3. Clear DTCs after completing the programming procedure.

If an actuator is replaced, the following procedure must be performed

Recalibrating actuators for the HVAC system. Refer to Actuator Recalibration .

Inflatable Restraint Sensing and Diagnostic Module Programming and Setup

The inflatable restraint sensing and diagnostic module (SDM) must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the SDM will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for SDM programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the SDM unless directed by a service procedure or a service bulletin.

Note. The air bag indicator light may remain ON after the body control module (BCM), or SDM is replaced, and during the programming procedure for the BCM until after the procedure is completed. When installing a new SDM, there may be several DTCs set prior to programming. Once programmed, these DTCs should be in history and can be cleared. Failure to complete the following Setup procedure may cause DTC B1001 to be set in the SDM.

The following service procedures require either a programming or a setup event performed for a complete repair

Sensing and Diagnostic Module Replacement and/or Programming

If the inflatable restraint sensing and diagnostic module needs to be replaced and/or reprogrammed, the following procedures must be performed

  1. Access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Inflatable Restraint Sensing and Diagnostic Module Programming and follow the on-screen instructions.
  3. Perform the SPS function Inflatable Restraint Sensing and Diagnostic Module Setup and follow the on-screen instructions.
  4. Clear DTCs after completing the programming procedure.

If the control module fails to program, proceed as follows

  1. Ensure the DLC and Accessory Power Module connections are good.
  2. Inspect the Techline equipment for the latest software version.
  3. Attempt to program the SDM. If the SDM still cannot be programmed properly, replace the SDM.

Instrument Cluster Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS programming support tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

To program a replacement or an existing ECU, perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Instrument Cluster - Programming and follow the on-screen instructions.
  4. On the SPS Supported Controllers screen, select Instrument Cluster - Setup and follow the on-screen instructions.
  5. On the SPS Supported Controllers screen, select Instrument Cluster - Configuration and follow the on-screen instructions.
  6. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Keyless Entry Control Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS programming support tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

To program a replacement or an existing ECU, perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Keyless Entry Control Module - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Memory Seat Control Module Programming and Setup

The seat memory control module must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the seat memory control module will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for seat memory control module programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the seat memory control module unless directed by a service procedure or a service bulletin.

Seat Memory Control Module Programming

To program and setup an existing or new replacement seat memory control module, perform the following procedure

  1. With a scan tool, access the Service Programming System (SPS) and follow the on-screen instructions. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. On the SPS Supported Controllers screen, select MSM Memory Seat Control Module - Programming and follow the on-screen instructions.

If the MSM Memory Seat Module fails to accept the program, verify all scan tool and seat memory control module connections are secure.

Note. After programming is completed, perform the following to avoid future misdiagnosis: Turn the ignition OFF for 10 seconds. Open and close the door. Connect the scan tool to the data link connector. Ignition ON, engine OFF. With a scan tool, clear all DTC's from all modules.

Multimedia Player Interface Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

The Multimedia Player Interface Module is programmed with operational software during manufacturing. If it is verified during the following procedure that the latest calibrations are already programmed in the module, no further action is required. Do not attempt to program the module with the same calibration.

To program a replacement or an existing ECU, perform the following procedure

  1. Install EL-49642 SPS Programming Support Tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Multimedia Player Interface Module - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Object Alarm Module Programming and Setup

The parking assist control module must be programmed with the proper calibration software. The module stores and utilizes this information however if it is not properly configured with the correct calibration software, the parking assist control module will not control all of the vehicle features properly.

Ensure that the following conditions exist in order to prepare for parking assist control module programming

  1. The battery is fully charged.
  2. The MDI data link connectors are secure.
  3. The scan tool is loaded with the most current software version.
  4. All disconnected modules and devices are reconnected securely.
  5. This entire procedure has been reviewed before proceeding.

Do not reprogram the parking assist control module unless directed by a service procedure or a service bulletin.

Parking Assist Control Module Programming

To program and setup an existing or new replacement parking assist control module, perform the following procedure

  1. Access the Service Programming System (SPS) and follow the on-screen instructions. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. On the SPS Supported Controllers screen, UPA Parking Assist Control Module Programming and follow the on-screen instructions.

If the Object Alarm Module fails to accept the program, verify all scan tool and parking assist control module connections are secure.

Note. After programming is completed, perform the following to avoid future misdiagnosis

  1. Turn the ignition OFF for 10 seconds.
  2. Open and close the door.
  3. Connect the scan tool to the data link connector.
  4. Ignition ON, engine OFF.
  5. Clear all DTCs from all modules.

Passenger Presence System Programming and Setup

Note. Before rezeroing the passenger presence system, the front passenger seat must be completely empty of all items. The presence of any items on the front passenger seat will affect the calibration and operation of the passenger presence detection system.

If the passenger presence system is replaced or serviced, perform the rezeroing procedure for the passenger presence system. Refer to Passenger Presence System Rezeroing for the rezeroing procedure.

Power Steering Control Module Programming and Setup (Electronic Power Steering)

The following service procedures require either a programming or a setup event performed for a complete repair.

The electronic power steering control module is part of the power steering assist motor assembly and is electronically paired with the steering gear's sensors.

  1. If the complete steering gear INCLUDING the assist motor assembly was replaced, or for reprogramming of an existing power steering system WITHOUT replacement, refer to the «Power Steering Control Module Reprogramming»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__power-steering-control-module-reprogramming) G instructions in this article.
  2. If ONLY the Power Steering Assist Motor assembly is replaced, follow the POWER STEERING CONTROL MODULE REPLACEMENT instructions.

Power Steering Control Module Replacement

Note. During the procedures listed below, critical data is retrieved from vehicle components and stored in the scan tool computer's hard drive. This data is needed during the programming and setup sequences. Ensure the same scan tool is used and capable of reading, storing, and writing the vehicle's system data.

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Electronic Power Steering - Prepare Control Module for Removal and follow the on-screen instructions.
  3. Replace the Power Steering Assist Motor containing the Power Steering Control Module. Refer to «Power Steering Assist Motor Replacement»(/buick/lacrosse/ii-2009-2013/remont/manual-power-steering/#power-steering-system) .
  4. With the Power Steering Assist Motor replaced and reconnected, using the same scan tool, perform the SPS function Electronic Power Steering - Programming and follow the on-screen instructions.
  5. Perform the SPS function Electronic Power Steering - Setup and follow the on-screen instructions.
  6. Perform the Steering Angle Sensor Centering and Software Endstop Learning procedure. Refer to «Power Steering Control Module Calibration»(/buick/lacrosse/ii-2009-2013/remont/manual-power-steering/#power-steering-system) .
  7. Clear DTCs after completing the programming and setup procedures.

Power Steering Control Module Reprogramming

Do not program or reprogram the electronic power steering control module unless directed by a service procedure or a service bulletin.

Note. This procedure applies to reprogramming of the existing steering gear or the initial programming if the complete steering gear assembly including the assist motor was replaced. If only the power steering control module is replaced, follow the Power Steering Control Module Replacement instructions above.

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Electronic Power Steering - Programming and follow the on-screen instructions.
  3. Perform the SPS function Electronic Power Steering - Setup and follow the on-screen instructions.
  4. Perform the Steering Angle Sensor Centering and Software Endstop Learning procedure. Refer to «Power Steering Control Module Calibration»(/buick/lacrosse/ii-2009-2013/remont/manual-power-steering/#power-steering-system) .
  5. Clear DTCs after completing the programming and setup procedures.

Steering Angle Sensor Centering and Software Endstop Learning

For the steering angle sensor centering and software endstop learning, refer to Power Steering Control Module Calibration .

Power Steering Control Module Programming and Setup (Variable Effort Steering)

The following service procedures require either a programming or a setup event performed for a complete repair.

Variable Effort Steering Control Module Replacement

If the variable effort steering control module needs to be replaced, the following procedures must be performed

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Variable Power Steering Control Module - Programming and follow the on-screen instructions.
  3. Clear DTCs after completing the programming procedure.

Variable Effort Steering Control Module Reprogramming

Do not reprogram the variable effort steering control module unless directed by a service procedure or a service bulletin.

  1. Connect a scan tool to the vehicle and access SPS. Refer to «Service Programming System (SPS)»(/buick/lacrosse/ii-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Perform the SPS function Variable Power Steering Control Module - Programming and follow the on-screen instructions.
  3. Clear DTCs after completing the programming procedure.

This ECU does not require SPS programming or any setup procedures.

Radio Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

  1. During radio programming you may be required to select multiple calibrations dependent upon vehicle equipment. Have the vehicle build/RPO information available during the following procedure to ensure the correct calibrations are selected.
  2. The XM satellite radio (if equipped) is integrated into the radio. If XM was activated in the previous radio, the replacement radio will require no additional activation steps. Customer subscription information is transferred to the replacement radio when a replacement radio is ordered.

To program a replacement or an existing ECU, perform the following procedure

  1. Install EL-49642 SPS Programming Support Tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select Radio - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Rear Differential Clutch Control Module Programming and Setup

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

Note. DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration software, the ECU will not control all of the vehicle features properly. Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or ECU damage may occur. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install the EL-49642 SPS programming support tool to maintain system voltage. If not available, connect a fully charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger. Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights (including daytime running lights), HVAC, radio, etc. During the programming procedure, follow the SPS prompts for the correct ignition switch position. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

To program a replacement or an existing ECU, perform the following procedure

  1. Install EL-49642 SPS programming support tool.
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Programming and follow the on-screen instructions.
  4. On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Configuration and follow the on-screen instructions.
  5. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all ECU, DLC and programming tool connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the ECU.
  3. If the ECU can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the ECU. The ECU should program. If the ECU still cannot be programmed, replace the ECU.

Rearview Camera Image Display Module Programming and Setup

There is no setup procedure that needs to be performed for the rearview camera image display module on this vehicle.

The remote control door lock receiver only functions as an antenna, receiving the signals sent by the keyless entry transmitter and forwarding them to the body control module (BCM). The keyless entry software is contained wholly within the BCM.

This ECU does not require SPS programming or any setup procedures.

Service Programming System (SPS)

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer to Special Tools .

For step-by-step control module programming instructions, please refer to the techline information system (TIS) terminal.

Review the information below to ensure proper programming protocol.

Note. DO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors service bulletin. Programming a control module at any other time will not permanently correct a customers concern. It is essential that the TIS terminal, MDI, and/or Scan Tool, is equipped with the latest software before performing service programming. Due to the time requirements of programming a controller, install EL-49642 SPS Programming Support Tool to maintain system voltage. Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. If the above tool is not available, DO NOT connect a battery charger, connect a fully charged 12V jumper or booster pack disconnected from the AC voltage supply. Some modules will require additional programming/setup events to be performed before or after programming. Some vehicles may require the use of a CANDi or MDI module for programming. Review the appropriate service information for these procedures. DTCs may set during programming. Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.

Ensure the following conditions are met before programming a control module

  1. Vehicle system voltage: There is not a charging system concern. All charging system concerns must be repaired before programming a control module. Battery voltage is greater than 12 volts but less than 16 volts. The battery must be fully charged before programming the control module. Turn OFF or disable any system that may put a load on the vehicles battery, such as the following components: Interior lights Exterior lights including daytime running lights (DRL)-Applying the parking brake, on most vehicles, disables the DRL system Heating, ventilation, and air conditioning (HVAC) systems Engine cooling fans Radio, etc.
  2. The ignition switch must be in the proper position. SPS prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the programming procedure, unless instructed to do so.
  3. Make certain all tool connections are secure, including the following components and circuits: Scan Tool The RS-232 communication cable port The connection at the data link connector (DLC) The voltage supply circuits MDI The USB, Ethernet or Wireless communication port The connection at the data link connector (DLC)
  4. DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.

In the event of an interrupted or unsuccessful programming event, perform the following steps

  1. DO NOT turn the ignition OFF. Ensure that all control module and DLC connections are secure and the TIS terminal operating software is up to date.
  2. Attempt to reprogram the control module.
  3. If the control module can still not be programmed, turn the ignition OFF for at least one minute.
  4. Turn the ignition ON and attempt to reprogram the control module. The control module should program. If the control module still cannot be programmed, replace the control module.

After successfully programming the control module, ensure that all post programming procedures are performed; refer to Control Module References for the appropriate control module Programming and Setup document for any required procedures.

Steering Wheel Heat Control Module Programming and Setup

This device requires no programming or setup.

Sunroof Control Module Programming and Setup

When replacing the sunroof motor/control module, the sunroof motor/actuator initialization/teach procedure must be followed.

Existing or New Motor

For the sunroof motor/actuator initialization/teach procedure refer to Sunroof Motor/Actuator Initialization/Teach Process .

The theft deterrent module only functions as an exciter and antenna, energizing the key transponder and receiving the key code information. The immobilizer software is contained wholly in the body control module (BCM).

This ECU does not require SPS programming or any setup procedures.

Window Motor Normalized Procedure

A window motor that has not been normalized will no longer perform the express up and express down functions, this may occur during the following conditions

  1. When a window motor has been disconnected or replaced
  2. When a door harness has been disconnected
  3. When the battery has been disconnected or replaced

Note. When DTC B3205 4B & 3210 4B are set, the following warnings will be displayed on the driver information center: Open, then Close Driver Window Open, then Close Passenger Window These warnings will clear once the windows have been "Normalized" and the respective DTC will clear.

To normalize the window motor, follow these steps

  1. Ignition ON.
  2. Starting with the window completely UP, press and hold the power window switch until the window is fully open and continue holding the switch down for approximately 5 seconds after the window is completely open.
  3. Pull the power window switch up until the window is fully closed and continue holding the switch up for approximately 5 seconds after the window is completely closed.

The window should now be normalized and the window should perform the express up and express down functions.

Window Motor Relearn Procedure

A relearn procedure may need to be performed for any Local Interconnect Network (LIN) window motor for the following conditions

  1. When the window glass is out of alignment
  2. When the window glass has been replaced
  3. When the door has been replaced
  4. When the window regulator has been replaced

Note. Prior to performing the relearn procedure the vehicle must have all 4 wheels properly inflated and mounted, the vehicle must be sitting on a level surface and all doors must be completely closed and for vehicles equipped with a folding convertible top, the top must be closed and firmly latched.

To relearn the window motor, follow these steps

  1. Ignition ON.
  2. With a scan tool, select Module Diagnosis, Body Control Module, Configuration/Reset Functions and then select the appropriate Clear Window Learn Values for the window motor requiring the relearn procedure.
  3. After the learn procedure, exit the scan tool learn procedure completely, the power window cannot be normalized and will not function until you exit the program.
  4. Starting with the window completely UP, press and hold the power window switch until the window is fully open and continue holding the switch down for approximately 5 seconds after the window is completely open.
  5. Pull the power window switch up until the window is fully closed and continue holding the switch up for approximately 5 seconds after the window is completely closed.

The window is now reprogrammed.

Illustration Tool Number/Description EL 46079 J 46079 Tire Pressure Monitor Diagnostic Tool EL 49642 EL 50113 Europe- Use recommended equivalent workshop equipment SPS Programming Support Tool

Scheme 1

Scheme 1: Special Tools

Scheme 2

Scheme 2

See also:
Data Link References
Diagnostic System Check - Vehicle
Diagnostic Trouble Code (DTC) List - Vehicle
Battery Energy Control Module Scan Tool Information
Hybrid Energy Storage Schematics
Body Control Module Scan Tool Information
Body Control System Schematics
Communication Interface Module Scan Tool Information
OnStar Schematics
Transmission Control Module Scan Tool Information (6T70/6T75)
Automatic Transmission Controls Schematics
Automatic Transmission Controls Schematics
Control Solenoid Valve and Transmission Control Module Assembly Replacement
Control Solenoid Valve and Transmission Control Module Assembly Replacement
Driver Seat Adjuster Memory Module Scan Tool Information
Driver Seat Schematics
Driver Seat and Passenger Seat Heater Control Module Scan Tool Information
Heated/Cooled Seat Schematics
Electronic Brake Control Module Scan Tool Information
Antilock Brake System Schematics
Instrument Cluster Schematics
Electronic Parking Brake Control Module Scan Tool Information
Park Brake System Schematics
Electronic Suspension Control Module Scan Tool Information
Electronic Suspension Control Schematics
Engine Control Module Scan Tool Information (LFX or LFW)
Engine Control Module Scan Tool Information (LUK)
Engine Controls Schematics (LUK)
Engine Controls Schematics (LFX)
Engine Control Module Replacement
Engine Control Module Replacement
Fuel Pump Flow Control Module Scan Tool Information
Remote Function Schematics
Hybrid Powertrain Control Module Scan Tool Information
Drive Motor Control Module Scan Tool Information
Hybrid Controls Schematics
Headlamp Control Module Scan Tool Information
Headlights/Daytime Running Lights (DRL) Schematics
Headlamp Control Module Replacement
Head-Up Display Scan Tool Information
Heating, Ventilation and Air Conditioning Control Module Scan Tool Information
HVAC Schematics
Inflatable Restraint Passenger Presence System Scan Tool Information
SIR Schematics
Inflatable Restraint Sensing and Diagnostic Module Scan Tool Information
Instrument Cluster Scan Tool Information
Keyless Entry Control Module Scan Tool Information
Release Systems Schematics
Multimedia Player Interface Module Scan Tool Information
Object Alarm Module Scan Tool Information
Object Detection Schematics
Power Steering Schematics
Power Steering Control Module Scan Tool Information
Radio Scan Tool Information
Rear Differential Clutch Control Module Scan Tool Information
Rear Axle Schematics
Side Object Sensor Module Scan Tool Information
Steering Wheel Schematics
Sunroof Schematics
Theft Deterrent System Schematics
Theft Deterrent Module Replacement (Without BTM)
Reset Transmission Adapts
Transmission Adaptive Values Learn
Brake Pressure Modulator Valve Pressure Sensor Calibration
Steering Angle Sensor Centering
Brake Pedal Position Sensor Learn
Brake Pedal Position Sensor Learn
Crankshaft Position System Variation Learn
Actuator Recalibration
Sunroof Motor/Actuator Initialization/Teach Process
Battery Energy Control Module Programming and Setup
Body Control Module Programming and Setup
Communication Interface Module Programming and Setup
Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T30/6T40/6T45/6T50)
Memory Seat Control Module Programming and Setup
Heated Seat Control Module Programming and Setup
Electronic Brake Control Module Programming and Setup
Electronic Compass Module Programming and Setup
Electronic Parking Brake Control Module Programming and Setup
Electronic Suspension Control Module Programming and Setup
Engine Control Module Programming and Setup
Fuel Pump Flow Control Module Programming and Setup
Generator Control Module Programming and Setup
Headlamp Control Module Programming and Setup
Head-Up Display Programming and Setup
HVAC System Control Module Programming and Setup
Passenger Presence System Programming and Setup
Inflatable Restraint Sensing and Diagnostic Module Programming and Setup
Instrument Cluster Programming and Setup
Keyless Entry Control Module Programming and Setup
Multimedia Player Interface Module Programming and Setup
Object Alarm Module Programming and Setup
Power Steering Control Module Programming and Setup (Variable Effort Steering)
Radio Programming and Setup
Rearview Camera Image Display Module Programming and Setup
Rear Differential Clutch Control Module Programming and Setup
Steering Wheel Heat Control Module Programming and Setup
Sunroof Control Module Programming and Setup
Service Programming System (SPS)
Power Steering Control Module Reprogramming
Control Module References