2010-13 Silverado 4.3L Engine Computer 12635043 "Programmed to your VIN" ECM PCM
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. This E.C.M. fits the following vehicles: 2010-13 4.3L Chevrolet Silverado 1500.