2017 GMC Sierra HD All-Terrain X Archives -

2017 GMC Sierra HD All-Terrain X Adds High Torque

October 11, 2016October 11, 2016 Grant Hamersma

The All-Terrain X addition is now being added to the Sierra HD and GMC has upgraded its edition. Buyers can now go for a 6.0-liter V8 petrol engine or opt for the 6.6-liter V8 turbodiesel […]