2012 Chevrolet Silverado 1500 ECM Engine Control Module OEM 12633055 5.3L
The engi ne types may include 4.8L 294Cu. V8 FLEX OHV Naturally Aspirated,5.3L 5328CC 325Cu. V8 FLEX OHV Naturally Aspirated,5.3L 5 328CC 325Cu. V8 GAS OHV Naturally Aspirated,6.0L 5967CC 364Cu. V8 CNG OHV Naturally Aspirated,6.0L 5967CC 364Cu.