2025 GMC Sierra 3500HD Denali Ultimate 4WD Crew Cab | Sterling Metallic | Alpine Umber Leather

This Sierra 3500HD Denali Ultimate combines heavy-duty diesel capability with a richly appointed crew-cab interior. Sterling Metallic is paired with Alpine Umber leather seating, while the dual-rear-wheel configuration and long bed give this truck a substantial working footprint. The Duramax 6.6L V8 turbodiesel is paired with a 10-speed automatic transmission and four-wheel drive. With 56,543 miles, stock C260917B offers the distinctive combination of serious truck equipment and premium passenger comfort that defines the Denali Ultimate.

The front seats provide power adjustment, four-way lumbar support, power bolster adjustment and massage functions for both driver and passenger. Heated and ventilated front seats, heated rear seating and a heated steering wheel add comfort across the seasons. Driver memory covers the seat and mirrors, while dual-zone climate control lets the front occupants tailor their settings. Alpine Umber upholstery, the center console and the crew cab's rear seating create a welcoming space for workdays and longer trips alike.

A power sunroof adds light above the cabin, and the power-sliding rear window provides additional ventilation when desired. Power-retractable assist steps with perimeter lighting help with entry and exit. The rear seat includes a storage package and a 60/40 folding bench, giving you options for passengers and items that need to travel inside. Keyless open and start, steering-wheel audio controls and convenient power outlets support everyday use without complicating the cabin layout.

The Bose premium 12-speaker sound system brings a refined listening experience into this heavy-duty truck. A multicolor head-up display and driver information center provide useful information in the driver's field of view. The Rear Camera Mirror and bed-view camera offer additional perspectives, while front and rear park assist help when maneuvering in supported situations. Ask our team to demonstrate the infotainment, camera views and display settings so you can become familiar with this particular truck's controls.

For towing-related convenience, this Sierra includes a gooseneck/fifth-wheel preparation package with stamped bed holes and caps, a seven-pin trailer harness and a spray-on bedliner. An integrated trailer brake controller and Hitch Guidance with Hitch View add useful trailering tools. The heated power trailering mirrors include an auto-dimming feature. A two-speed transfer case with AutoTrac supports the four-wheel-drive system, and engine and transmission cooling equipment complement the diesel powertrain. Confirm the hitch equipment, trailer requirements and vehicle-specific load ratings for your intended use before towing.

The cargo bed includes a 120-volt outlet, and the truck also provides a cabin power outlet. The rear CornerStep bumper adds a practical access point, while the MultiPro audio system by Kicker brings another convenience feature to the tailgate area. Animated LED projector headlamps and LED fog lamps complement the truck's exterior lighting. Rain-sensing front wipers, the Safety Alert Seat and Automatic Emergency Braking add useful convenience and assistance features. Driver aids do not replace attentive driving or checking the space around a large vehicle.

Visit Covert Cadillac at 11750 Research Blvd Suite B, Austin, TX 78759 to see this Sierra 3500HD Denali Ultimate and take a test drive. Our team can walk you through the dual-rear-wheel layout, bed and trailering equipment, seat adjustments and camera systems so you can judge how this truck fits your needs. Serving Central Texas and beyond since 1909. Come experience the Covert Commitment today!