Programmed 2004 Trailblazer EXT ECM 89017739 | Engine Control Module

Programmed 2004 Savana 3500 ECM 89017739 | VIN Flashed Engine Computer

Programmed 2004 Astro PCM | Engine Control Module ECM 12586243

2004 Express 3500 PCM 89017739 Programmed to Your VIN | Engine Control Module

Programmed 2004 Sierra 1500 PCM 12586243 | Engine Control Module VIN Matched

Programmed 2004 Envoy XUV PCM | 89017739 | VIN Flashed Engine Computer

2004 EXPRESS 3500 Engine Computer 89017739 Programmed To Your VIN ECM PCM ECU

2004 Sierra 3500 PCM 89017739 Programmed Engine Control Module