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.
After removing the conventional hitch, the inner gate folds into a large step for easy entry and exit from the bed (step holds up to 375 lbs).
The inner gate also includes a load stop to help prevent second-tier items from sliding out of the bed. The inner gate can be disabled to prevent it from being opened when a hitch or other equipment is installed.
The inner gate folds down for easy access when loading and unloading the bed.
Sierra HD Crew Cab models have ample storage options to pack the stuff you need, with features like rear-folding split bench with under-seat storage.
When you want to bring your music outdoors — without your truck running — the available accessory MultiPro Audio System by Kicker is designed to integrate into the MultiPro Tailgate.
With Apple CarPlay compatibility you have wired or wireless access to iPhone® features such as hands-free phone calls and messaging, Apple Music™, Apple Maps and more. Standard on all HD models.
Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:
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. Standard on Denali. Available on AT4, SLT and SLE.
Standard Teen Driver helps encourage better safe driving habits for new drivers. It automatically activates certain available safety systems and allows parents to set limits on other features. There is even an in-vehicle report card that parents can access to help with coaching their teen driver.
The available Rear Camera Mirror provides 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.