Fully tested and VIN-programmed OEM ECM/ECU for the 2014 GMC Sierra 4.3L engine. Bench-tested, calibrated, and ready to install — no dealer programming required.

Fully tested and VIN-programmed OEM ECM/ECU for the 2014 GMC Sierra 6.6L engine. Bench-tested, calibrated, and ready to install — no dealer programming required.

Fully tested and VIN-programmed OEM ECM/ECU for the 2014 GMC Sierra 6.2L engine. Bench-tested, calibrated, and ready to install — no dealer programming required.