The majority of engine control units for vehicles 1996 and newer (OBDII) are subject to Engine Control Module reprogramming in order to function properly in your vehicle. Most units before 1996 (OBDI) are plug and play. It is important that the VIN and mileage match your car exactly when replacing the car ECU/ECM.
AutoECMs Offers ECM Programming
We offer programming on select Chrysler and GM Engine Control Modules. If available, this will be mentioned in the Product Description of the part you are viewing.
Programming is available for the following subdivisions:
GM - Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Saturn
Chrysler ECM (1996 - Present)
GM ECM (1996 - 2001)
*Other units not mentioned above, manufactured after 1996, will need to be performed by a dealer.