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.

Warning: Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.

ECM Replacement and Reprogramming

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

  1. ECM Reprogramming--Refer to Service Programming System (SPS).
  2. Heated oxygen (HO2S) sensor heater learn procedure using a scan tool for 6.0L.
  3. Clutch pedal position sensor learn, if equipped--Refer to Clutch Pedal Position Sensor Learn.
  4. Idle Learn Procedure--Refer to Throttle Learn for the 3.6L engine or Throttle Learn for the 6.0L engine.
  5. The CKP Variation Learn--Refer to Crankshaft Position System Variation Learn for the 6.0L engine.
  6. Theft Deterrent--Refer to Theft Deterrent Control Module Programming and Setup. 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.
  7. 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.

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 Throttle Learn for the 3.6L engine or Throttle Learn for the 6.0L engine.
      • Throttle body assembly
      • ECM
    • If any of the following components are replaced, a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn for the 6.0L engine.
      • Engine replacement
      • Any engine repair that disables the crankshaft position (CKP) sensor or its relationship with the crankshaft reluctor wheel
      • CKP sensor
    • If any of the following components are replaced, a Clutch Pedal Position Sensor Learn Procedure must be performed. Refer to Clutch Pedal Position Sensor Learn ,
      • Clutch pedal
      • Clutch pedal position sensor