GM Service Manual Online
For 1990-2009 cars only

The replacement powertrain control module (PCM) must be reprogrammed. The crankshaft position system variation learn procedure must be performed. Refer to the following procedures:

    â€¢ Latest Techline information on PCM re-programming
    â€¢  Crankshaft Position System Variation Learn
    â€¢  Inspection/Maintenance (I/M) Complete System Set Procedure
    â€¢  Programming Theft Deterrent System Components in Theft Deterrent Systems