2003-2006 Chevrolet Silverado 1500 Engine Control Module ECU ECM 12586242 OEM

03-06 Chevrolet Silverado Sierra 5.3L Engine Computer ECU ECM 12586242 12583660

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

2003-2006 Chevrolet Silverado 5.3L Engine Control Unit Module ECM 12586242 YFXL

2003-2007 Chevrolet Silverado 5.3L Engine Control Module ECU 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