Pickups of yore tended to buck like broncos on uneven surfaces like turnpike expansion joints, with the bed trying to bounce one direction and the cab the other. Often a function of wheelbase, this can't be completely eliminated in a long vehicle like a Sierra HD, but it does an admirable job of mitigating the motion.
There's heft to the feel of a Sierra, from the way it takes big bumps to the steering and throttle inputs. Its handling characteristics are benign and amount to basic plowing if you push too hard. All-terrain tires give better grip on dirt roads, at the expense of steering precision and noise on tarmac.
Like all big 2WD pickups the Sierra uses all-vented disc brakes with ABS, and independent front suspension. However, only the GM heavy-duty pickups use the same design on 4WD models, giving them a lower nose and more responsive steering. Again, like any big pickup, the tail is prone to kick over impacts with an empty bed; the Sierra is similar to others although it may feel it has more kick because the front is softer.
The optional integrated trailer brake controller will apply your trailer brakes smoother than any aftermarket controller and works in concert with the Sierra's braking system. This controller, however, is not compatible with all brands of electric-hydraulic disc brakes becoming more common on high-end RVs.
The 2.5-inch receiver hitch allows conventional trailer ratings to 13,000 pounds, higher than many competitive offerings; the maximum for fifth-wheels 16,700 pounds. The strongest Sierra HD will haul 23,500 pounds gross combined: the truck, fuel, passengers, cargo, and trailer. Next Page