2001-2004 Chevy Silverado/GMC Sierra LB7 DURAMAX PCM 12210729 12209950 Also fits: CHEVROLET 2500 SILVERADO PICKUP 02-03 Electronic Control Module, (LH front under battery), diesel CHEVROLET 2500 SILVERADO PICKUP 04 Electronic Control Module, (LH front under battery), diesel, VIN 1 (8th digit) CHEVROLET 3500 SILVERADO PICKUP 02-03 Electronic Control Module, (LH front under battery), diesel CHEVROLET 3500 SILVERADO PICKUP 04 Electronic Control Module, (LH front under battery), diesel, VIN 1 (8th digit) GMC SIERRA 2500 PICKUP 02-03 Electronic Control Module, (LH front under battery), diesel GMC SIERRA 2500 PICKUP 04 Electronic Control Module, (LH front under battery), diesel, VIN 1 (8th digit) GMC SIERRA 3500 PICKUP 02-03 Electronic Control Module, (LH front under battery), diesel GMC SIERRA 3500 PICKUP 04 Electronic Control Module, (LH front under battery), diesel, VIN 1 (8th digit)