"New" 2003 GM Engine computer 12582605 "Programmed to your VIN" ECM PCM

This E.C.M. fits the following vehicles: Various 2003 4.8/5.3/6.0L GM trucks that use a service number 12582605 engine control module.This auction is for one service number 12582605 ECM (Engine control module) that is programmed for your vehicleusing the latest software updates using your V.I.N. (Vehicle identification number) to exactlymatch your vehicle. After you purchase the E.C.M. you will need to provide us with your V.I.N so thatwe can program the E.C.M. before we ship it to you.This computer is new old stock. It is new but will have scratches and blemishes. There is no core charge you keep your old E.C.M. There is a one year replacement warranty.Two things may have to be done after you install your E.C.M.  First an anti-theft relearn may have to be performed.  If this is the case the truck will not start. The second thing is that a crankshaft variation relearn may need to be performed once the vehicle isrunning. This will be evident if the check engine or service engine soo