GPCM Replacement
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
If the glow plug controller (GPCM) is replaced, the following procedures must be performed.
Fuel Injector Flow Rate Programming for fuel injector flow rate programming