This computer is refurbished and tested for functionality. There is no core charge you keep your old E. Two things will have to be done after you install your E. First an anti-theft relearn will have to be performed before the vehicle will start. The second thing is that a crankshaft variation relearn will need to be performed once the vehicle is running.
You will need access to a scan tool capable of doing this procedure to do this and clear any related trouble codes (Code P0315). If this is not available to you a repair shop will have to perform this and clear the related trouble code. The vehicle will run normal but the "service engine soon" light will come on and a trouble code will be stored until this is resolved. Instructions for both procedures will be included. Note: If this ECM is for a 2006 GTO the ECM will have to be linked to the powertrain interface module before the vehicle will start.You will have to have a GM dealership perform this service. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Starters, Alternators, ECUs & Wiring\ECUs & Computer Modules". The seller is "flashmasters" and is located in this country: US. This item can be shipped worldwide.