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1620 East Homer Adams Pkwy Alton, IL 62002

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2018 GMC Sierra 3500 Denali HD OVERVIEW Overview Icon

2018 GMC Sierra 3500 Denali HD in Alton

We engineered the Sierra 3500 Denali HD to exceed your performance expectations, pushing it to the limit to deliver the kind of professional grade capability you demand

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  • Digital Steering Assist
  • Remote Locking Tailgate
  • Front, leather-appointed bucket seat
  • 8" diagonal GMC Infotainment System with Navigation
  • Lane Departure Warning
2018 GMC Sierra 3500 Denali HD Main Img

2018 GMC Sierra 3500 Denali HD MODELS

  • Sierra 3500 Denali HD Dual Rear Wheel Denali

    Sierra 3500 Denali HD Dual Rear Wheel Denali

  • Sierra 3500 Denali HD Single Rear Wheel Denali

    Sierra 3500 Denali HD Single Rear Wheel Denali

2018 GMC Sierra 3500 Denali HD CONFIGURATIONS

* Model and trim configurations may vary
  • Sierra 3500 Denali HD Crew Cab Standard Box Single Rear Wheel
    Sierra 3500 Denali HD Crew Cab Standard Box Single Rear Wheel
  • Sierra 3500 Denali HD Crew Cab Long Box Single Rear Wheel
    Sierra 3500 Denali HD Crew Cab Long Box Single Rear Wheel
  • Sierra 3500 Denali HD Crew Cab Long Box Dual Rear Wheel
    Sierra 3500 Denali HD Crew Cab Long Box Dual Rear Wheel

GMC Sierra 3500 Denali HD Dealer in Alton

2018 GMC Sierra 3500 Denali HD PERFORMANCE Performance Icon

2018 GMC Sierra 3500 Denali HD performance

High-Strength Steel

Nearly two-thirds of the Sierra cab structure is made from high-strength steels. It’s a fortress of strength that contributes to the Sierra’s quiet cabin. We also use high-strength steel in our fully-boxed frame rails and major frame cross-members.

2018 GMC Sierra 3500 Denali HD performance

Automatic Locking Rear Differential

  • When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added traction
  • The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm

2018 GMC Sierra 3500 Denali HD APPEARANCE Appearance Icon

Signature Style 2018 GMC Sierra 3500 Denali HD Appearance Main Img
2018 GMC Sierra 3500 Denali HD appearance

Signature Style

Hood scoop (induction system) on the Duramax-equipped models provides cooler airflow and contributes to the horsepower rating.

2018 GMC Sierra 3500 Denali HD COMFORT Comfort Icon

2018 GMC Sierra 3500 Denali HD comfort

Long Haul Comfort

  • Heated and ventilated, perforated leather-appointed front seats
  • Heated and leather-wrapped steering wheel
  • Durable soft-touch instrument panel
  • Aluminum trim accents
2018 GMC Sierra 3500 Denali HD comfort

Enhanced Usability

  • Large center console with space for hanging file folders, and laptops
  • 8” diagonal customizable Driver Information Center
  • Wireless charging pad
  • 110V power outlet
2018 GMC Sierra 3500 Denali HD comfort

Heated Steering Wheel

With the press of a button the steering wheel quickly heats up to provide additional comfort on a cool day.

2018 GMC Sierra 3500 Denali HD comfort

Universal Home Remote

  • Conveniently operates your automatic garage door, open powered gates or turns on home lighting from the safety of your vehicle
  • Includes 3 programmable channels

2018 GMC Sierra 3500 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 3500 Denali HD Safety Main Img
2018 GMC Sierra 3500 Denali HD safety

Rear Vision Camera

When in Reverse, the camera provides the driver a view of the scene directly behind the vehicle on the Infotainment screen to help the driver park and avoid crashing into nearby objects during low-speed maneuvering

2018 GMC Sierra 3500 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.

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