Standing at the top of the Sierra 2500 HD Crew Cab lineup, the Denali Ultimate delivers the flagship GMC experience for buyers who want maximum luxury and capability, featuring a Bose 12-speaker premium audio system, MultiPro Tailgate with Kicker audio, power-retractable assist steps, and the confidence and pulling power of the Duramax 6.6L Turbo-Diesel V8 paired with an Allison 10-speed automatic.
Heavy-duty diesel power
Delivers immense 470 HP and 975 lb-ft through the Duramax 6.6L Turbo-Diesel V8 engine, Allison 10-speed automatic transmission and 4WD, providing robust towing and hauling capability with an integrated exhaust brake.
Bose 12-speaker premium audio
Delivers an immersive listening experience through the Bose 12-speaker Premium Series with Centerpoint surround sound, enhanced by AudioPilot and a Richbass subwoofer.
Power-retractable assist steps
Provides convenient entry and exit with power-retractable assist steps that include LED perimeter lighting for enhanced visibility in low-light conditions.
Adaptive cruise control
Maintains a set following distance from the vehicle ahead, even while trailering, for reduced driver fatigue on long trips.
Signature Vader Chrome grille
A distinctive Vader Chrome grille enhances the truck's bold and commanding presence.
Sierra HD Pro Safety suite
Includes a comprehensive suite of safety technologies such as Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, Front Pedestrian Braking, IntelliBeam auto high beams and a Following Distance Indicator.
This content is AI-generated and some details may not be 100% accurate. Refer to the details throughout this page for specific vehicle info.
