Engine Control Computer, ECU ECM 4.3 Liter Motor, 77-7427.

This computer manages various functions of a vehicle engine, such as fuel injection, spark timing, and emissions control. The number is 77-7427. This computer was used for a 1995 G20 van, with a 4.3 liter motor. It has been remanufactured. Good condition. Comes from a smoke-free, pet free home.