Preproduction model shown throughout with optional features. Actual production model may vary.
2025 SIERRA HEAVY DUTY
DENALI
Due to global Semi-Conductor supply shortages and software issues, GM vehicles may not have some standard features and options. Please check with your local GMC dealer to confirm the vehicle’s specifications prior to purchase. Vehicles not equipped with Automatic Stop/Start will be less fuel efficient.
Sierra comes with:
- Standard: 5-YEAR / 100,000 KM WARRANTY
§ - Optional: 2-YEAR EXTENDED WARRANTY AVAILABLE
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DENALI
STARTING AT
Key Features:
- Standard 6.6L V8 Gas Engine with Allison® 10-Speed Automatic Transmission
- 13.4" Diagonal Center Touch-Screen, 12.3" Diagonal Digital Driver Information Center and Available Multicolor 15" Diagonal Head-Up Display
- Denali-Exclusive Authentic Open-Pore Wood, Patterned Aluminum Trim, and Forge Perforated Leather Seating Surfaces
- Standard Wireless Apple CarPlay®
and Wireless Android AutoTM§ Compatibility§
- Standard Adaptive Cruise Control
- Spray-on Bedliner will have GMC Logo on back wall
- Power Sunroof
- Universal Home Remote
- 3 Years OnStar Connect Plan
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INTERIOR
Sierra HD Denali feature ultra-premium interiors with first-class amenities and the finest materials.
DENALI ULTIMATE SHOWN
PREMIUM MATERIAL
Sierra HD Denali’s interior distinguishes itself with a level of craftsmanship that is the epitome of Professional Grade. This includes aluminum trim and chrome accents and authentic open-pore walnut wood detailing.
EMBROIDERED DENALI LOGO
Sierra HD Denali features attractive embroidery on the front seats.
EXTERIOR
Sierra Heavy Duty looks every inch the premium pulling machine.
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NEW FRONT BUMPER, FASCIA AND REDESIGNED DENALI CHROME GRILLE
A bold, updated front end further refines Sierra HD Denali’s striking good looks.
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20" ULTRA-BRIGHT MACHINED WHEELS WITH BRIGHT CHROME INSERTS
Sierra HD Denali stands out with available unique wheels on SRW models.
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NEW LED PROJECTOR HEADLAMPS AND SIGNATURE LIGHTING WITH ANIMATED SEQUENCES
New LED projector headlamps help enhance Sierra Heavy Duty’s bold exterior design.
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POWER-RETRACTABLE ASSIST STEPS WITH LED PERIMETER LIGHTING
This available feature includes textured step pads to help provide secure footing and a Deploy Running Board mode for car washes. Illuminated power assist steps available on Denali.
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SIX-FUNCTION MULTIPROTM TAILGATE
Helping to make light work of almost any job, GMC’s powerfully innovative MultiPro™ Tailgate combines six convenient functions.
TECHNOLOGY
Enjoy 3 years of the OnStar Connect and Protect Plan
Safety or driver-assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Read the vehicle Owner’s Manual for important feature limitations and information.
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13.4" DIAGONAL CENTER TOUCH-SCREEN
An available 13.4" diagonal tablet-style touch-screen is the customizable, high-tech centerpiece of the cabin.
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12.3" DIAGONAL DIGITAL DRIVER INFORMATION CENTER
Sierra Heavy Duty features an available 12.3" diagonal digital Driver Information Center. Control and customize important vehicle, driving and infotainment content with high-resolution clarity.
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WIRELESS APPLE CARPLAY® AND WIRELESS ANDROID AUTOTM COMPATIBILITY
Connect your compatible smartphone to wireless Apple CarPlay®
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NEXT-GENERATION GMC INFOTAINMENT SYSTEM WITH AVAILABLE GOOGLE BUILT-IN POWERED BY ONSTAR
Available with the next-generation GMC Infotainment System
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UP TO 14 AVAILABLE CAMERA VIEWS INCLUDING ENHANCED TRANSPARENT TRAILER VIEW
Keep tabs on your truck and trailer with up to 14 available camera views,
VIEW DETAILS
CAPABILITY
Sierra Heavy Duty is strong and smart, offering an advanced suite of available intelligent trailering technologies to help you stay in command.
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OFFERS THE MOST TRAILERING-
Available advanced tech allows you to trailer with enhanced confidence and improved camera views.
VIEW DETAILS
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AVAILABLE SIX-FUNCTION MULTIPRO TAILGATE
The powerfully innovative available MultiProTM Tailgate combines six convenient functions that help improve loading, unloading and accessing the cargo bed to make light work of almost any job.
VIEW DETAILS
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EXPERIENCE V8 TOWING PROWESS
Sierra Heavy Duty’s standard 6.6L V8 gas engine is now paired with the Allison 10-speed automatic transmission. This allows the engine to be held closer to its peak power band, optimizing power, torque and efficiency.
VIEW DETAILS
SAFETY
SIERRA HD PRO SAFETY§
Every Sierra Heavy Duty includes active safety and driver-assistance technologies that help while driving and trailering. Sierra HD Pro Safety includes:
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- IntelliBeam
- Lane Departure Warning
- Buckle to Drive
- Automatic Emergency Braking
- Advanced safety and 24/7 Human assistance powered by OnStar
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