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.
- Install EL-49642 SPS programming support tool .
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select ONSU Onstar® Module Setup and Service Activation and follow the on-screen instructions.
- At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
- The default language for the new Communication Interface Module is English. To change to an alternate language, access the scan tool.
- Inform the customer that it may take up to 24 hours for the OnStar® service to become fully activated.
Transmission Control Module (TCM) Replacement
If the TCM is replaced, the following procedures must be performed
- TCM Reprogramming
- The Service Fast Learn Adapts - Refer to «Service Fast Learn Adapts»(ref-490262-S41219580722012072700000)
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 Service Fast Learn Adapts procedure must be performed
- Transmission replacement
- Any internal transmission repair
- Any speed sensor
Refer to Service Fast Learn Adapts .
EBCM Replacement
If the electronic brake control module (EBCM) is replaced, the following procedures must be performed.
EBCM Reprogramming-Refer to Service Programming System (SPS) .
The replacement of ABS components such as the steering wheel position sensor may require a setup procedure for complete repair . Refer to Steering Angle Sensor Centering
ECM Replacement
If the engine control module (ECM) is replaced, the following procedures must be performed
- ECM Reprogramming-Refer to «Service Programming System (SPS)»(ref-490222-S08737008092012072700000) .
- Theft Deterrent-Refer to «Immobilizer System Component Programming»(ref-490224-S03168848272012072700000) .
- Brake Pedal Position Sensor Learn-Refer to «Brake Pedal Position Sensor Learn»(ref-490262-S32403612342012072700000) .
- The CKP System Variation Learn-Refer to «Crankshaft Position System Variation Learn»(ref-490251-S34087409212012072700000) .
- The Throttle/Idle Learn procedure-Refer to «Throttle/Idle Learn»(ref-490251-S20571500222012072700000) .
- 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.
- 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.
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 .
- Engine replacement
- Any engine repair that disturbs the CKP sensor or its relationship with the crankshaft reluctor wheel
- 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 .
If the engine control module (ECM) is replaced, the following procedures must be performed
- ECM Reprogramming-Refer to «Service Programming System (SPS)»(ref-490222-S08737008092012072700000) .
- Theft Deterrent-Refer to «Immobilizer System Component Programming»(ref-490224-S03168848272012072700000) . 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.
- Brake Pedal Position Sensor Learn-Refer to «Brake Pedal Position Sensor Learn»(ref-490262-S32403612342012072700000) .
- Throttle Learn Procedure-Refer to «Throttle/Idle Learn»(ref-490250-S41714608522012072700000) .
- 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.
- 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.
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 Throttle/Idle Learn .
- Throttle body assembly
- ECM
Replace and Program ECU or Reprogram ECU
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.
Heated Seat Module Replacement
If the heated seat module is replaced or if the module needs to be reprogrammed, refer to Service Programming System (SPS) .
HVAC Control Module Replacement
If the HVAC control module is replaced it must be programmed with the latest operating software and vehicle calibrations. Refer to Service Programming System (SPS) .
Actuator Replacement
If an actuator is replaced, the following procedure must be performed
- Re-Calibrating Actuators-Refer to «Actuator Recalibration»(ref-490259-S04050327482012072700000) for the manual system.
- Re-Calibrating Actuators-Refer to «Actuator Recalibration»(ref-490257-S03278571102012072700000) for the automatic system.
Radio Replacement
| IMPORTANT | The radio setup files will configure the radio amplifier (if equipped), internal equalization settings, and program the vehicle identification number (VIN). Without the following setup procedure, the sound quality and volume of the radio may be degraded. |
For uplevel radios, setup is completed using the Service Programming System (SPS). Refer to Service Programming System (SPS) .
For the base radio, use the program VIN procedure available in Special Functions menu of the scan tool. After programming the VIN cycle the ignition key with the retained accessory power (RAP) disabled.
To program a replacement or an existing ECU, perform the following procedure
- Install EL-49642 SPS programming support tool.
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Programming and follow the on-screen instructions.
- On the SPS Supported Controllers screen, select RDCM Rear Differential Clutch Control Module- Setup and follow the on-screen instructions.
- At the end of programming, choose the"Clear All DTCs" function on the SPS screen.
Remote Control Door Lock Receiver Replacement - Copy and Paste TPM Information
This procedure will learn the TPM information to the new RCDLR using the Copy and Paste function on the scan tool. This procedure will extract the TPM Tire Type information as well as the sensor data from the existing RCDLR prior to its replacement and store this information in the scan tool. After RCDLR replacement and SPS programming, the tire type and sensor data stored in the scan tool is written to the new RCDLR, negating the need to perform the tire type setup and sensor learn procedure.
This procedure should be considered as the first programming choice when replacing an RCDLR. The Copy and Paste procedure eliminates the possibility of incorrectly inputting the tire type or learning stray TPM sensors.
- Using a scan tool, navigate to the Copy and Paste TPM Information procedure and copy the existing TPM information from the RCDLR using the outline below. Follow the on-screen instructions after selecting Step 1: Vehicle Control Systems Module Setup Remote Control Door Lock Receiver Copy and Paste TPM Information Step 1
- At this point, install the new RCDLR.
- Program the RCDLR - Refer to «Service Programming System (SPS)»(ref-490222-S08737008092012072700000) .
- Using a scan tool, navigate to the Copy and Paste TPM Information procedure to paste the stored TPM information using the outline below. Follow the on-screen instructions after selecting Step 2: Vehicle Control Systems Module Setup Remote Control Door Lock Receiver Copy and Paste TPM Information Step 2
- Program the keyless entry transmitters - Refer to «Remote Control Door Lock Transmitter Programming»(ref-490225-S19188408812012072700000) .
Remote Control Door Lock Receiver Replacement - TPM Sensor Learn
This procedure will learn TPM information to the new RCDLR by manually inputting the tire type using the scan tool and performing the TPM sensor learn. This procedure should be performed if the above Copy and Paste procedure can not be completed. An example of this would be an RCDLR that is unable to communicate with the scan tool and is required to be replaced.
- RCDLR Programming-Refer to «Service Programming System (SPS)»(ref-490222-S08737008092012072700000) .
- Keyless Entry Transmitter Programming-Refer to «Remote Control Door Lock Transmitter Programming»(ref-490225-S19188408812012072700000) .
- Tire Type Setup: Install a scan tool. Select Remote Control Door Lock Receiver under Module Setup in the Vehicle Control System menu. Select Tire Type/Pressure Selection. Follow the on-sceen instructions.
- Tire Pressure Monitoring Sensor Learn-Refer to «Tire Pressure Indicator Sensor Learn»(ref-490263-S17345092522012072700000) .
Serial Data Gateway Module (SDGM) Replacement
If the SDGM is replaced, SDGM programming must be performed. Refer to Service Programming System (SPS) .