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Contents Wiring diagrams Section: Communication Devices All sections

Programming and Setup - All Systems Buick LaCrosse I

Communication Devices ~2235 words

Audio Amplifier Programming and Setup

There is no setup procedure that needs to be performed for the amplifier on this vehicle.

Blower Control Module Programming and Setup

The blower control module requires no programming or setup procedures.

Service Programming System (SPS)

Review the information below to ensure proper programming protocol.

IMPORTANTDO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors Corporation service bulletin. Programming a control module at any other time will not permanently correct a customer's concern. It is essential that the Tech 2 and the TIS terminal are both equipped with the latest software before performing service programming system (SPS). Some modules will require additional programming/setup events performed before or after programming. Some vehicles may require the use of a CANDi 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

Vehicle system voltage

  1. There is not a charging system concern. All charging system concerns must be repaired before programming a control module.
  2. Battery voltage is greater than 12 volts but less than 16 volts. The battery must be charged before programming the control module if the battery voltage is low.
  3. A battery charger is NOT connected to the vehicle's battery. Incorrect system voltage or voltage fluctuations from a battery charger, may cause programming failure or control module damage.
  4. Turn OFF or disable any system that may put a load on the vehicle's battery, such as the following components: Twilight sentinel Interior Lights 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.
  5. The ignition switch must be in the proper position. The Tech 2 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.
  6. Make certain all tool connections are secure, including the following components and circuits: The RS-232 communication cable port. The connection at the data link connector (DLC).
  7. DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programm7ing procedure, programming failure or control module damage may occur.
  8. DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections are secure and the TIS terminal operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, replace the control module.

Body Control Module Programming and Setup

Each of the following courses of action requires a setup or programming procedure before the body control module (BCM) can be put into normal service.

Body Control Module (BCM) Replacement

If the BCM is replaced, the following procedures must be performed in the subsequent order

  1. BCM Reprogramming-Refer to «Body Control Module (BCM) Programming/RPO Configuration»(/buick/lacrosse/i-2004-2009/remont/communication-devices/#computerintegrating-systems__body-control-module-bcm-programmingrpo-configuration) in Computer/Integrating Systems for replacement, setup, and programming.
  2. Theft Learn-Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent.

Sensing and Diagnostic Module (SDM) Replacement

If the sensing and diagnostic module (SDM) is replaced, the following procedures must be performed

  1. BCM Reprogramming-Refer to «Body Control Module (BCM) Programming/RPO Configuration»(/buick/lacrosse/i-2004-2009/remont/communication-devices/#computerintegrating-systems__body-control-module-bcm-programmingrpo-configuration) in Computer/Integrating Systems for replacement, setup, and programming.
  2. Theft Learn-Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent.

Body Control Module (BCM) Reprogramming

If the BCM is reprogrammed, the following procedures must be performed

  1. BCM Reprogramming-Refer to «Body Control Module (BCM) Programming/RPO Configuration»(/buick/lacrosse/i-2004-2009/remont/communication-devices/#computerintegrating-systems__body-control-module-bcm-programmingrpo-configuration) in Computer/Integrating Systems for replacement, setup, and programming.
  2. Theft Learn-Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent.

Communication Interface Module (OnStar) Programming and Setup

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

Communication Interface Module Replacement

If the OnStar® communication interface module is replaced, the setup procedure needs to be performed. Please refer to OnStar Reconfiguration in Cellular Communication.

Digital Radio Receiver (DRR) Programming and Setup

Each of the following service procedures require programming or setup procedures to be performed on the digital radio receiver (DRR).

DRR Replacement

If the DRR is replaced, the new DRR must have the setup procedure performed. Refer to Digital Radio Receiver Setup in Entertainment.

Electronic Brake Control Module Programming and Setup

This device requires no programming or setup.

Electronic Compass Module Programming and Setup

The electronic compass module requires a calibration after the module is replaced, repaired, or as required for proper module operation. Refer to Electronic Compass Calibration in Instrument Panel, Gages, and Console.

Engine Control Module Programming and Setup (3.6L - LY7)

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/i-2004-2009/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Idle Learn Procedure-Refer to «Idle Learn Procedure»(/buick/lacrosse/i-2004-2009/remont/testing-diagnostics/#engine-control-system-36l-ly7-introduction-2-of-2__idle-learn-procedure) in Engine Controls - 3.6L (LY7).
  3. Theft Deterrent-Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent. The ECM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. An ECM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.
  4. 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.
  5. 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/i-2004-2009/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.

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, an Idle Learn Procedure must be performed. Refer to Idle Learn Procedure in Engine Controls - 3.6L (LY7).

  1. Throttle body assembly
  2. ECM

Garage Door Opener Programming And Setup

The garage door opener (GDO) programming and setup procedures must be performed after replacement. Refer to Garage Door Opener Programming - Universal in Garage Door Opener on how to program the GDO.

Heated Seat Control Module Programming And Setup

This device requires no programming or setup.

HVAC Control Module Programming And Setup

Each of the following service procedures may require programming or setup procedures to be performed on the HVAC control module or HVAC actuators.

HVAC Control Module Replacement

If the HVAC information or HVAC Automatic control modules are replaced, an automatic re-calibration of all the actuators will occur. For the best re-calibration results, start and run the engine for at least one minute after installing the new module. Do not adjust any controls on the HVAC control module during the re-calibration procedure. If interrupted, improper HVAC performance may result. No additional procedures are necessary.

HVAC Control Module Reprogramming

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

Reprogram HVAC Control Module-Refer to Service Programming System (SPS) .

Actuator Replacement

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

  1. Re-calibrating actuators-Refer to «Re-Calibrating Actuators»(/buick/lacrosse/i-2004-2009/remont/manual-hvac-system/#hvac-systems-manual) in HVAC Systems - Manual.
  2. Re-calibrating actuators-Refer to «Re-Calibrating Actuators»(/buick/lacrosse/i-2004-2009/remont/automatic-hvac-system/#hvac-systems-automatic__re-calibrating-actuators) in HVAC Systems - Automatic.

Inflatable Restraint Sensing And Diagnostic Module Programming And Setup

IMPORTANTThe air bag indicator light may remain ON after the body control module (BCM), or sensing and diagnostic module (SDM) is replaced, and during the programming procedure for the BCM until after the procedure is completed, and the ignition key is cycled OFF and ON.

If the SDM is replaced you must perform the BCM reprogramming procedure in order for the BCM to relearn the new SDM ID. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Instrument Panel Cluster Programming And Setup

This device requires no programming or setup.

Passenger Presence System Programming And Setup

IMPORTANTBefore rezeroing the passenger presence system (PPS), 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 PPS. When rezeroing the PPS, the instrument panel cluster (IPC) and dash lights will begin dimming on and off. This is normal operation during the rezeroing procedure and does not indicate additional system faults.

If the PPS is replaced or serviced, perform the rezeroing procedure for the PPS. Refer to Passenger Presence System Rezeroing Procedure for the rezeroing procedure.

Powertrain Control Module Programming And Setup

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

PCM Replacement

If the powertrain control module (PCM) is replaced, the following procedures must be performed

  1. PCM Reprogramming-Refer to «Service Programming System (SPS)»(/buick/lacrosse/i-2004-2009/remont/communication-devices/#programming-and-setup-all-systems__service-programming-system-sps) .
  2. Crankshaft position (CKP) Variation Learn-Refer to «Crankshaft Position Sensor (CKP) System Diagnosis»(/buick/lacrosse/i-2004-2009/remont/testing-diagnostics/#engine-control-system-38l-troubleshooting) in Engine Controls.
  3. Theft Deterrent-Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent. The PCM will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password, and will require a learn procedure after programming to learn the current vehicle's password.
  4. 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.
  5. 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.

PCM Reprogramming

  1. If the PCM needs to be reprogrammed, refer to «Service Programming System (SPS)»(/buick/lacrosse/i-2004-2009/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.
  3. Turn the ignition OFF for 30 seconds.
  4. Turn the ignition ON with the engine OFF.
  5. Use the scan tool in order to retrieve history DTCs from all modules.
  6. 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, a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position Sensor (CKP) System Diagnosis in Engine Controls.

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

Radio Programming And Setup

Each of the following service procedures require programming or setup procedures to be performed on the radio.

Radio Replacement

If the radio is replaced, the new radio must have the setup procedure performed. Refer to Radio Setup in Entertainment.

Sunroof Motor/Actuator

This programming and setup is used for the 1 connector Sunroof System that uses the combination sunroof motor/actuator.

The sunroof motor/actuator uses sensor inputs to continuously monitor the location of the glass panel and to establish soft stop locations several millimeters ahead of the hard stops (physical limits) of the glass panel. The sunroof motor/actuator includes the sunroof motor, actuator. sensors and the control module. These components are not serviced individually.

Sunroof Motor/Actuator Replacement

If the sunroof motor/actuator is replaced, the initialization procedure must be performed in the following order

  1. Place the ignition switch to the ON position.
  2. Press and hold the sunroof switch to the CLOSE position until the glass panel stalls at the hard stop position and moves back to the soft stop position.
  3. Release the sunroof switch.
  4. Verify sunroof operation. Refer to «Sunroof Description and Operation (1 Connector System)»(/buick/lacrosse/i-2004-2009/remont/sun-rooft-topconvertible-top/#power-roof-system) in Roof.

The programming procedure is not complete if one of the following actions occurs before the procedure is complete

  1. The sunroof switch is not held in the CLOSE position.
  2. The ignition switch is turned to the OFF position.
  3. Battery positive voltage is removed.
  4. The glass panel did not reach the fully closed position.

Sunroof Motor/Actuator Reprogramming

This component is not re-programmable.

Sunroof Motor/Actuator Re-Initialization: May Be Due To Related Component Service

If battery positive voltage or ground is removed and re-installed from the sunroof motor/actuator, the following procedure must be performed in the following order

  1. Place the ignition switch to the ON position.
  2. Press and hold the sunroof switch to the CLOSE position until the glass panel stops at the front soft stop position.
  3. Release the sunroof switch.
  4. Press and hold the sunroof switch again to the CLOSE position for 13 seconds. The sunroof will stall at the hard stop position, then move back to the soft stop position.
  5. Release the sunroof switch.
  6. Verify sunroof operation. Refer to «Sunroof Description and Operation (1 Connector System)»(/buick/lacrosse/i-2004-2009/remont/sun-rooft-topconvertible-top/#power-roof-system) in Roof.

The re-initialization procedure is not complete if one of the following actions occur before the procedure is complete

  1. The sunroof switch is not held in the CLOSE position.
  2. The ignition switch is turned to the OFF position.
  3. Battery positive voltage is removed.
  4. The glass panel did not reach the fully closed position.

Transmission Control Module Programming And Setup

  1. The transmission control module (TCM) must be programmed with the proper software/calibrations. Ensure that the following conditions exist in order to prepare for TCM programming: The battery is fully charged. The ignition switch is in the RUN position. The Techline equipment cable connection at the data link connector (DLC) is secure.
  2. Program the TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.
  3. If the TCM fails to program, proceed as follows: Ensure that the TCM connection is OK. Inspect the Techline equipment for the latest software version. Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.

Object Alarm Module Programming And Setup

This device requires no programming or setup.

Remote Control Door Lock Receiver Programming And Setup

The following procedure must be performed when replacing the remote control door lock receiver module.

Transmitter Programming in Keyless Entry

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