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1620 East Homer Adams Pkwy Alton, IL 62002

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2018 GMC Sierra 2500 Denali HD OVERVIEW Overview Icon

2018 GMC Sierra 2500 Denali HD in Alton

We engineered the Sierra 2500HD Denali to exceed your performance expectations, pushing it to the limit to deliver the kind of professional grade capability you demand.

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  • Vortec® 6.0L Variable Valve Timing V8 SFI Engine
  • Digital Steering Assist
  • Bose® Audio System
  • Front, Leather-Appointed Bucket Seat
  • 20" Chromed Cast Aluminum Wheels
2018 GMC Sierra 2500 Denali HD Main Img

GMC Sierra 2500 Denali HD Dealer in Alton

2018 GMC Sierra 2500 Denali HD PERFORMANCE Performance Icon

2018 GMC Sierra 2500 Denali HD performance

Enhanced Driveline and Cooling Components

The Duramax hood-scoop induction system provides cooler induction air temperatures to maximize horsepower.

2018 GMC Sierra 2500 Denali HD performance

Capability

  • Maximum Fifth-Wheel/Gooseneck rating of 15,400 lbs
  • Maximum payload of 3,233 lbs
  • Available Integrated Fifth-Wheel /Gooseneck Prep Package
2018 GMC Sierra 2500 Denali HD performance

Control

  • Available Duramax Diesel power and integrated trailering technologies help give you the confidence to control heavy loads
  • Stabilitrak with Hill Start Assist, Trailer Sway Control, and Traction Control
  • Digital Steering Assist which adapts steering input requirements to the situation

2018 GMC Sierra 2500 Denali HD APPEARANCE Appearance Icon

Denali Chrome Grille 2018 GMC Sierra 2500 Denali HD Appearance Main Img
2018 GMC Sierra 2500 Denali HD appearance

Denali Chrome Grille

New bold Denali chrome grille.

2018 GMC Sierra 2500 Denali HD COMFORT Comfort Icon

2018 GMC Sierra 2500 Denali HD comfort

Quiet Cabin

  • Triple door seals that help block outside noise
  • Aerodynamic exterior mirrors that help reduce wind noise
  • Hydraulic body and engine mounts help reduce vibration
2018 GMC Sierra 2500 Denali HD comfort

Intuitive Infotainment

  • 8" diagonal GMC Infotainment System with Navigation
  • Access to phone, maps, and weather
  • Bluetooth® connectivity
  • Download select in-vehicle apps via Shop
2018 GMC Sierra 2500 Denali HD comfort

Rear Sliding Power Window With Rear Defogger

  • Helps to keep your rearview clear
  • Utilizes a warming grid to remove fog or frost from the rear window
  • The window switch is conveniently located in the overhead console for easy 1-touch operation
2018 GMC Sierra 2500 Denali HD comfort

Power-Adjustable Pedals

Adjustable accelerator and brake pedals allow the driver to set at the most comfortable position.

2018 GMC Sierra 2500 Denali HD 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:

- Two maintenance visits
- 3-year / 36,000-mile Bumper-to-Bumper Warranty
- 5-year / 60,000-mile Powertrain Warranty
- 5-year / 60,000-mile Roadside Assistance & Courtesy Transportation
- 3-month trial of OnStar Guidance Plan with a suite of emergency security and diagnostic services
- 5-year OnStar Basic Plan

2018 GMC Sierra 2500 Denali HD Safety Main Img
2018 GMC Sierra 2500 Denali HD safety

Front and Rear Park Assist

  • Below 5 mph (8 km/h), provides distance-to-object alerts to help the driver park
  • Also helps the driver avoid crashing into nearby detected objects directly ahead or behind the vehicle during low-speed maneuvering
2018 GMC Sierra 2500 Denali HD safety

Forward Collision Alert

  • If the system detects that a front-end collision situation is imminent while following a detected vehicle, the system alerts the driver to a potential crash.
  • It also alerts the driver if the driver is following a detected vehicle much too closely.

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