Item Tag: Sierra 2500

On these GMT800-platform trucks and SUVs, the VIN-specific programming is not just a suggestion—it’s essential. The best way is to match the service number on your current PCM to one of the compatible numbers listed (12589463 ,89017750 ,12582605 ,12602802, etc.).

We take the guesswork and expense out of the repair by pre-programming this unit with the latest GM software updates using your vehicle’s unique VIN. A generic ‘one-size-fits-all’ computer can create more problems than it solves.