1988-1991 Chevy GMC C/K 1500 ECM 1227747 ASDU 5.0 5.7 305 350 A/T 4L60 1990 1989

1227747 Chevy Engine Computer ECM ECU 1987 - 1991

1227747 AMUR Chevy 1988-1991 Silverado 5.7 5.0 Engine Computer 1990 1989 ECM C42

1227747 ADUJ 1988-1991 Chevy GMC 1500 2500 3500 AT Engine Computer Module ECM

1988 1989 1990 Chevy Truck 1500 Computer ECM & Prom Chip PCM 1227747 5.7L ASDU

1227747 ADUJ 1988-1991 Chevy GMC 1500 2500 3500 AT Engine Computer Module ECM

C1500 1227747 Chevy Engine Computer ECM ECU 5.7L 1988 1989 1990 1991

C1500 1227747 Chevy Engine Computer ECM ECU 4.3L 5.0L 5.7L 1988 1989 1990 1991