2006 Chevy Trailblazer 4.2L Engine Computer 12604439 12597521 YMSR ECU Module

2006 CHEVY SILVERADO 1500 4.8L YNBR 28042802 ENGINE CONTROL MODULE ECU ECM OEM

2003-2006 Chevy GMC Trailblazer Envoy ECU ECM Engine Control Module OEM 3699

2007-2008 Chevy Trailblazer Envoy 4.2L GM Engine Control Module ECM OEM 12602010

2006 GMC Envoy XL Trailblazer EXT 4.2L Engine Control Module ECM OEM GM 12597521

2007-2008 Chevy Trailblazer Envoy 4.2L GM Engine Control Module ECM OEM 12602010

04 05 2006 Chevy ECM PCM Engine Computer 12597521 -Programming needed 12569773

2003 Chevy Trailblazer 4.2 Engine Computer Control Module ECM ECU 12573576 OEM