Powertrain Control Module (PCM) Replacement: Notes
WARNING: This page is about a different car, the 2002 GMC C3500 HD and 2002 Chevrolet C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Service of the powertrain control module (PCM) should normally consist of replacement of the PCM.
If the diagnostic procedures calls for replacing the PCM, perform the following procedures in the following order:
- Programming the PCM
- Passlock Learn Procedure
- Programming the top dead center (TDC) offset