Powertrain Control Module/Programming On Board: Notes

WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors Corporation service bulletin. Programming a control module at any other time will not permanently correct a customers concern.

NOTE: Follow programming procedure. DO NOT disturb tool harnesses while programming. If an interruption occurs during programming procedure, programming failure or control module damage may occur.