Programmed 2004 Trailblazer EXT ECM 89017739 | Engine Control Module

Programmed 2004 Savana 3500 ECM 89017739 | VIN Flashed Engine Computer

Programmed 2004 Avalanche 2500 PCM 89017739 | Engine Control Module

Programmed 2004 Yukon XL 2500 PCM Engine Control Module 89017739

Programmed 2004 Astro PCM | Engine Control Module ECM 12586243

2004 Suburban 2500 PCM 89017739 | VIN Programmed Engine Computer ECM

Programmed 2004 SSR PCM 89017739 | Engine Control Module | VIN Flashed

Programmed 2004 Savana 2500 PCM 12586243 | Engine Control Module