GM Service Manual Online
For 1990-2009 cars only

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

ECM Replacement

If the engine control module (ECM) is replaced, the ECM Reprogramming procedure must be performed. Refer to Service Programming System (SPS).

ECM Reprogramming

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