To help maintain optimal operating temperatures of the available Duramax® 6.6L 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.
Eases driver’s steering effort when maneuvering at low speeds, reduces the steering effort needed to return the heavy-duty truck to center, and adapts to crowned road surfaces, reducing the need to correct steering over long stretches of uneven road. It includes new enhancements to help with driving response, especially when trailering or when carrying a heavy load.
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. Wireless phone projection via Apple CarPlay® and Android Auto™.
Sierra Heavy Duty is being designed to integrate ASA Electronics™ iN∙Command® Control System with Global Connect and accessed through the myGMC Mobile App. The system allows owners to monitor and control a range of smart systems, such as water tank levels, HVAC controls and even power slide-outs, in compatible recreational trailers equipped with the technology. Learn more about iN∙Command® Control System with Global Connect.
When you’re camping or tailgating and want to bring your music outdoors – without leaving your truck running – the available accessory MultiPro Audio System by Kicker is designed to integrate into the MultiPro Tailgate. This 100-watt exterior audio system has full Bluetooth® streaming capability.
Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:
The available Rear Camera Mirror uses a camera to provide you a wide and less obstructed view behind the vehicle while you’re driving. You can switch between the camera view and a traditional rearview mirror.
Front and Rear Park Assist can provide distance alerts to nearby detected objects in front of or behind your truck to help you park and avoid collisions at low speeds. Available on Sierra HD Pro, 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.