1987 1988 1989 GMC Truck Engine Computer ECM PCM 1227747 4.3L, 5.0L, 5.7L
This ECM will fit any application that originally used the 1227747 ECM. GM installed this 1227747 ECM in a variety of GM applications. This was possible because each model received their specific PROM (also known as chip) from the factory.