Sierra 1500 2004 04 Engine Computer ECM PCM 12586242 -Programmed to your VIN

Avalanche 2004 Engine Computer ECM ECU PCM 12586242 -Programmed to your VIN #

Silverado 2500HD 2004 Engine Computer ECM PCM 12586242 -Programmed to your VIN #

Hummer H2 2004 04 Engine Computer ECM PCM 12586242 - Programmed to your VIN

2004 Silverado Engine computer 12586242 "Programmed to your VIN" ECM PCM ECU

2004 Yukon Engine computer 12586242 "Programmed to your VIN" ECM PCM ECU

Silverado 2004 1500 12586242 PCM ECM - Programmed to your VIN - 4.8L 5.3L 6.0L

Trailblazer 2004 04 5.3L Engine Computer ECM PCM 12586242 Programmed to your VIN