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 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) .