2003-2006 GMC Sierra Silverado 5.3L Engine Control Module ECU ECM OEM 12587672

2008 Chevy Silverado/GMC Sierra 1500 5.3L Engine Control Unit ECM ECU - 12617630

2003-2006 GMC Sierra Silverado Engine Control Module ECU ECM PCM OEM 12587672

2003-2006 Chevy Silverado Sierra 5.3L Engine Control Module ECU ECM OEM 12586242

2003-2006 Chevrolet Silverado Sierra 5.3L Engine Control Module ECM OEM 12586242

2003-2006 Chevrolet Silverado Sierra 5.3L Engine Control Module ECM OEM 12583660

2004 Chevy Silverado 5.3L Engine Computer Module ECU ECM OEM 12586242 12583660

1999-2003 Chevy Silverado Sierra Suburban 5.3L Engine Computer 09354896 ECU ECM