To help maintain optimal operating temperatures of the available 6.6L Duramax® Turbo Diesel V8 engine, a massive 28" variable-speed cooling fan was added. Dense, cool air from the Dual Path Air Induction System is drawn through both the hood scoop and the large grille to maximize horsepower and help optimize trailering performance. The factory-installed Diesel After-Run feature is designed to help cool down the engine following heavy usage.
To help with positioning, after backing up to a trailer hitch using available Hitch View, Sierra Heavy Duty will automatically apply the electric parking brake upon shifting into park to avoid unintentional rolling.
Prevents movement when shifting out of park on a hill and moving a foot from brake to accelerator pedal by automatically applying brakes at each wheel for an extended period of time while trailering.
The standard Side Bed Step conveniently located just in front of the rear wheel arches complements the large CornerStep rear bumper to help provide easy access when grabbing equipment from the cargo bed.
The available 6.6L Duramax® Turbo-Diesel engine includes the Dual Path Air Induction System, which draws dense, cool air through both the hood scoop and the large front grille to provide cooler induction air temperatures to maximize horsepower and help optimize trailering performance.
In both corners of the rear bumper, large footwells, lined with an anti-slip texture and sized for large boots, helps make access to the cargo bed easier than ever. Standard on all Heavy-Duty models.
Backseat passengers are sure to be comfortable with the available heated rear outboard seats and spacious rear leg room on Crew Cab models.
Lighted center console storage with available lockable console vault accessory, and large lower lockable glove box and upper glove box.
When on the road in the Sierra Heavy Duty, it’s OK to leave the cords at home. The wireless charging pad, located within easy reach near the cup holders, has excellent charging abilities and keeps your compatible smartphone charged and ready.
Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:
Rear Cross Traffic Alert can alert you to detected left- or right-cross traffic behind you when in Reverse. Available on Sierra HD, SLE, SLT, and AT4. Standard on Denali.
Forward Collision Alert can warn you if it detects a potential front-end collision with a vehicle you're following so you can quickly take action. The system can also provide a tailgating alert if you are following a vehicle much too closely. Available on base Sierra HD, SLE, SLT and AT4. Standard on Denali.
Following Distance Indicator displays the gap time in seconds between your vehicle and a detected vehicle you’re following. This can help you decide if you are following much too closely. Available on base Sierra HD, SLE, SLT and AT4. Standard on Denali.
When driving conditions are dark, available IntelliBeam auto high beams can automatically turn the vehicle’s high-beam headlamps on and off according to surrounding traffic conditions. Available on SLE, SLT and AT4. Standard on Denali.