PCM Replacement

WARNING: This page is about a different car, the 2005 GMC Sierra, 2005 GMC Cab & Chassis Sierra, 2005 Chevrolet Silverado, and 2005 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

If the PCM is replaced, the following procedures must be performed:

The PCM Reprogramming-Refer to Service Programming System (SPS) .
The CKP Variation Learn-Refer to the appropriate procedure:
- CKP System Variation Learn Procedure in Engine Controls - 4.3L (LU3).
- CKP System Variation Learn Procedure in Engine Controls - 4.8L, 5.3L, 6.0L (LR4, LM7, LQ4, LQ9, or L59).
- CKP System Variation Learn Procedure in Engine Controls - 8.1L (L18).
The Theft Deterrent Programming-Refer to Programming Theft Deterrent System Components in Theft Deterrent.