GMC SIERRA 2500 HD Extended Cab Pickup 6.0 CNG (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.0 CNG 4WD (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.0 (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.0 4WD (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.0 FLEX (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.0 FLEX 4WD (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D 4WD (2014-07-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D (2016-10-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D 4WD (2016-10-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D (2017-06-01 - )

GMC SIERRA 2500 HD Extended Cab Pickup 6.6 D 4WD (2017-06-01 - )