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1620 East Homer Adams Pkwy Alton, IL 62002

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2023 GMC Sierra HD Denali OVERVIEW Overview Icon

2023 GMC Sierra HD Denali in Alton

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  • Available 6.6L Duramax Turbo-Diesel V8 Engine with Allison 10-Speed Automatic Transmission
  • 20" Polished Aluminum Multi-Dimensional Wheels (Single Rear Wheel Models Only)
  • Forge Perforated Leather Seating Surfaces with Heated and Ventilated Front Bucket Seats
  • Authentic, Open-Pore Ash Wood, Brushed Aluminum Trim, Chrome Accents and More
2023 GMC Sierra HD Denali Main Img

GMC Sierra HD Denali Dealer in Alton

2023 GMC Sierra HD Denali PERFORMANCE Performance Icon

2023 GMC Sierra HD Denali performance

AVAILABLE 6.6L DURAMAX TURBO-DIESEL V8 ENGINE

  • 445 HP and 910 lb.-ft. of torque
  • Large variable-speed cooling fan and dual path air induction system
  • Factory-installed diesel after-run function helps maintain an ideal temperature for performance and efficiency
  • Intelligent diesel exhaust brake system
  • Large rear axle ring gears (11.5" on 2500, 12" on 3500) allow for an all-around mix of engine performance, towing strength and efficiency
2023 GMC Sierra HD Denali performance

STANDARD 6.6L V8 GAS ENGINE WITH 6-SPEED AUTOMATIC TRANSMISSION

  • 401 HP and 464 lb.-ft. of torque
  • 6-speed automatic transmission
  • 10.8:1 compression ratio
  • Valvetrain: Overhead-valve (two valves per cylinder) with variable valve timing
2023 GMC Sierra HD Denali performance

AVAILABLE ALLISON 10-SPEED AUTOMATIC TRANSMISSION

  • First HD in its class with Allison 10-speed automatic transmission
  • Developed specifically for Sierra Heavy Duty
  • Optimizes gear shifts for power, torque and efficiency
  • Close gear spacing that allows the engine to operate in an optimal range at all times with varying load and terrain conditions

2023 GMC Sierra HD Denali APPEARANCE Appearance Icon

2023 GMC Sierra HD Denali Appearance Main Img
2023 GMC Sierra HD Denali appearance

ADVANCED LIGHTING

All Sierra Heavy Duty models are equipped with LED daytime running lamps, halogen taillamps and wheel molding amber arch lamps over each wheel. Also available are:

  • Standard LED headlamps (high-intensity on Denali, AT4 and SLT)
  • Available fog lamps
  • Available LED fog lamps on SLE (standard on Denali, AT4 and SLT)
  • Available LED cargo bed lighting on SLE (standard on Denali, AT4 and SLT)
  • Available roof marker lamps on SRW (standard on DRW and Denali)
2023 GMC Sierra HD Denali appearance

PRIMARY GATE

Open the primary gate using the key fob’s power release from inside the truck or from the button on the gate. These same buttons can be used to lock the gate once closed.

2023 GMC Sierra HD Denali appearance

DENALI BLACK DIAMOND EDITION

KEY FEATURES:

  • Power sunroof
  • Power-retractable assist steps with LED perimeter lighting
  • 6.6L Duramax Turbo-Diesel V8 Engine with Allison 10-speed automatic transmission
  • Auxiliary Trailer Camera
  • MultiPro Audio System by KICKER®
  • Premium all-weather floor liners with removable carpet inserts
  • Trailer Tire Pressure Monitor Sensors
  • Unique 20" high-gloss black painted aluminum wheels
  • Ebony Twilight Metallic exterior paint

2023 GMC Sierra HD Denali COMFORT Comfort Icon

2023 GMC Sierra HD Denali comfort

STEP INSIDE

The refined and expansive cabin offers advanced, thoughtfully placed technology to help ensure a smooth, smart ride.

2023 GMC Sierra HD Denali comfort

RIDE CONFIDENTLY

  • The elevated driver seat lets you survey the road with confidence and offers comfortable cushions for enhanced support during long hauls
  • Spacious interior features best-in-class Crew Cab front head room (43.0") and leg room (44.5")
2023 GMC Sierra HD Denali comfort

WIRELESS CONNECTIVITY

It’s OK to leave the cords at home. The available wireless charging pad has excellent charging abilities. Wireless phone projection via Apple CarPlay® and Android AutoTM compatibility.

2023 GMC Sierra HD Denali comfort

AVAILABLE BOSE® PREMIUM SOUND SYSTEM

The BOSE Premium Sound System supplies seven well-placed speakers along with a Richbass woofer to produce powerful, high-quality concert-like sound wherever you go.

2023 GMC Sierra HD Denali SAFETY & WARRANTY Safety Icon

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
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2023 GMC Sierra HD Denali safety

REAR CAMERA MIRROR

The available Rear Camera Mirror provides a wide and less obstructed view behind the vehicle while you’re driving. You can switch between the camera view and a traditional rearview mirror.

2023 GMC Sierra HD Denali safety

AVAILABLE FIRST-IN-CLASS 15" DIAGONAL HEAD-UP DISPLAY

A multicolor 15" diagonal Head-Up Display helps you keep your eyes on the road by projecting directly onto the windshield key information such as: Speed, tachometer, mobile alerts, available navigation, available Forward Collision Alert, available Lane Departure Warning, cruise control and more.

2023 GMC Sierra HD Denali safety

AVAILABLE HD SURROUND VISION

High-Definition Surround Vision uses multiple cameras to display a digital overhead image of the area around your vehicle along with Rear Vision Camera or front views. It works at low speeds and may help you park and avoid nearby objects. You can select additional views on your camera display.

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