"Virgin" Service number 12633238 GM Engine computer

This listing is for one "Virginized" used engine computer Service number 12633238.We clear the data from the donor vehicle and restore the computer so it is a duplicate of a new computer.  "It is ready for programming" This computer is refurbished and tested for functionality.There is no core charge you keep your old E.C.M. There is a one year replacement warranty. The vehicle may or may not start once the computer is installed.  If the vehicle does not start an antitheft password relearn procedure will have to be done.  Also, the vehicle may run for a period of time (weeks or months) and then will not start and may set a code P0633.  If this occurs the following procedure will have to be done so that the security password will be learned by the replacement ECM.  To avoid any inconvenience it is best to do this procedure at the time that you install the replacement ECM.  This requires a programming tool (J2534 interface tool or equivalent) and a subscription to acdelcotds.com (cost