With NHT, the SLT Crew Cab 4x2 is equipped with the VortecMax 6.0-liter V8 engine, and a 3.73:1 rear axle. Ours was fitted with StabiliTrak, side-curtain airbags, a locking rear differential, and a convenience package that includes adjustable pedals, remote vehicle starting system and rear park assist. The SLT with NHT suspension is designed for maximum capacity trailer towing, with a special steering gear, shock absorbers, rear axle and tires. We found the NHT suspension compliant relative to its carrying capacity. Isolation and control are both very good. By virtue of its fairly stiff spring and shock rates, the NHT suspension can be driven aggressively on winding roads with tire squeal the primary indication you're approaching limits. Steering is direct by truck standards and nicely weighted, providing good feedback about how hard everything is working though the assist can fall behind during repeated full-lock maneuvering as when backing a trailer. However, if you drive empty and don't tow, we don't recommend the NHT package just so you can have the 6-liter V8 due to its harsher ride.
All new Sierras benefit from much improved brakes over earlier models, whether they have the rear discs or drum brakes.
The integrated brake controller that's available should find favor with drivers who tow RV or box trailers. However, be sure your trailer brakes are compatible with it before choosing the option, as some electro-hydraulic disc conversions do not work with the integrated controller. If it is compatible, it's a great feature, eliminating the mess of installing an aftermarket unit and offering more precise braking.
The highest tow rating for a Sierra is 10,700 pounds on extended cab (not long bed) or crew cab model; top regular cab rating is 9200 pounds. Note these figures typically apply to a truck with just a driver on board, and vary substantially based on a variety of equipment and options. Next Page