If & when you’re stepping up to a new truck, there can be no half-stepping. Going full-size means you want the power and torque of a heavy-duty V8. The GMC All-Terrain Sierra HD is the one. With nearly 400 horses and 765-foot pounds of torque, this beast will pull your RV up over the Continental Divide at 80 miles an hour. And if you feel like peeling off the pavement to bushwack through the scrub, it’ll do that, too. It’s got adjustable Fox racing shocks and nearly a foot of clearance at the skid plates. It’s serious.
GMC Sierra All Terrain HD
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