If you want the highlights of the Sierra 1500 AT4 in the new Coastal Dune color—fast, you’re in the right place. This quick overview pairs with our 1-minute walk-around video to cover the most important features and benefits in as little time as possible.
Performance
At the heart of the Sierra 1500 AT4 is the Duramax® 3.0L Turbo-Diesel engine, paired with a 10-speed automatic transmission. This setup delivers strong torque, smooth shifting, and excellent efficiency—ideal for towing, daily driving, and long-distance travel.
Off-Road Capability
The AT4 is built to handle challenging terrain straight from the factory:
- 2″ factory lift for added ground clearance
- Off-road suspension with Rancho® monotube shocks for improved control
- Two-speed Autotrac® transfer case for confident traction in changing conditions
- Underbody skid plates for added protection off-road
Interior Comfort
Inside, the AT4 blends rugged capability with premium comfort:
- Jet Black interior with Kalahari accents
- Heated and ventilated perforated front leather seats for year-round comfort
Technology
Everything you need is right where you want it:
- 13.4″ diagonal Premium GMC Infotainment System
- 12.3″ diagonal Driver Information Center
- Heads-Up Display to keep key info in your line of sight
Why Coastal Dune?
The new Coastal Dune exterior color adds a bold, refined look that perfectly matches the AT4’s off-road attitude.
If you’re looking for a truck that delivers capability, comfort, and technology without wasting time, the Sierra 1500 AT4 in Coastal Dune checks all the boxes. Watch the 1-minute walk-around, then come see it in person!