GM Service Manual Online
For 1990-2009 cars only

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).
  2. The CKP System Variation Learn--Refer to Crankshaft Position System Variation Learn.
  3. The Throttle Learn procedure--Refer to Throttle Learn.
  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.
  6. Theft Deterrent--Refer to Immobilizer System Component Programming.

ECM Reprogramming

    â€¢ If the ECM needs to be reprogrammed, refer to Service Programming System (SPS).
    â€¢ 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.

       Important: After programming, perform the following to avoid future misdiagnosis:

    â€¢ Turn the ignition OFF for 30 seconds.
    â€¢ Turn the ignition ON with the engine OFF.
    â€¢ Use the scan tool in order to retrieve history DTCs from all modules.
    â€¢ 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 CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn.

    â€¢ Engine replacement
    â€¢ Any engine repair that disturbs the CKP sensor or its relationship with the crankshaft reluctor wheel
    â€¢ CKP sensor
⇒If the throttle body is replaced, a Throttle Learn procedure must be performed. Refer to Throttle Learn.