2026 GMC Sierra HD Denali
2026 GMC Sierra HD Denali OVERVIEW 
2026 GMC Sierra HD Denali For Sale
- 20" Ultra-Bright machined aluminum wheels with bright chrome inserts*
- Denali-exclusive authentic wood, patterned aluminum trim and Forge perforated leather seating surfaces
- 12-way heated and ventilated power front seats
- Automatic Emergency Braking
2026 GMC Sierra HD Denali MODELS
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Sierra HD Denali
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Sierra HD Denali Ultimate
GMC Sierra HD Denali For Sale
2026 GMC Sierra HD Denali PERFORMANCE 
DURAMAX 6.6L TURBO-DIESEL V8 ENGINE
Sierra Heavy Duty’s available Duramax 6.6L Turbo-Diesel V8 engine features an efficient turbocharger and 10-speed automatic transmission.
6.6L V8 GAS ENGINE
Sierra HD Denali’s standard 6.6L V8 gas engine is paired with a 10-speed automatic transmission to help optimize power, torque and efficiency.
ADAPTIVE CRUISE CONTROL WITH TRAILERING
Adaptive Cruise Control* with trailering* allows the luxury heavy-duty truck’s Adaptive Cruise Control to account for additional drag and increased braking distances when towing a trailer.
2026 GMC Sierra HD Denali APPEARANCE 
LED PROJECTOR HEADLAMPS
LED projector headlamps feature GMC signature animated lighting sequences.
20" DENALI ULTIMATE WHEELS
The Sierra HD Denali Ultimate luxury truck features attractive 20" Ultra-Bright machined aluminum wheels with gloss-black inserts.*
DENALI ULTIMATE GRILLE
Denali Ultimate impresses with its signature Vader chrome grille, stylish front fascia and chrome recovery hooks.*
2026 GMC Sierra HD Denali COMFORT 
PREMIUM DENALI INTERIOR
The Sierra HD Denali luxury truck’s interior distinguishes itself with exceptional materials.
LUXURIOUS DENALI ULTIMATE MATERIALS
Sierra HD Denali Ultimate’s exclusive Alpine Umber interior features refined craftsmanship.
POWER FRONT SEATS WITH MASSAGING FEATURE
Experience serious comfort in Sierra HD Denali Ultimate’s best-in-class* 16-way power front seats with massaging feature.
12-SPEAKER BOSE SOUND SYSTEM
The technologically advanced available 12-speaker Bose* Premium Series with Centerpoint* surround sound helps create a concert-like listening experience.
2026 GMC Sierra HD Denali SAFETY & WARRANTY 
PRO GRADE PROTECTION
Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and services including:
- 3-year / 36,000-mile Bumper-to-Bumper Limited Warranty
- 5-year / 60,000-mile Powertrain Limited Warranty
- 5-year / 60,000-mile Roadside Assistance & Courtesy Transportation
- 3-year / 36,000-mile Corrosion Protection
- 6-year / 100,000-mile Rust-Through Protection
- First maintenance visit
BLIND ZONE STEERING ASSIST
Blind Zone Steering Assist can provide a brief, firm turn of the steering wheel when a potential collision is detected with a moving vehicle in the lane you’re entering.
REAR CROSS TRAFFIC ALERT
Rear Cross Traffic Alert can warn you of detected left or right cross traffic behind your vehicle when you’re in Reverse.
FORWARD COLLISION ALERT
Forward Collision Alert can warn you if it detects a potential front-end collision with a vehicle you’re following so you can quickly take action. It can also provide a tailgating alert if you’re following a vehicle much too closely.