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  • Masthead image of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty pickup truck.
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EXTERIOR

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Exterior image showing the front end of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty pickup truck.

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.

Exterior image showing the front end of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty pickup truck.

SIGNATURE STYLE

  • Hood scoop (induction system) on the Duramax-equipped models provides cooler airflow and contributes to the horsepower rating
  • New bold Denali chrome grille
  • 18-inch chromed aluminum wheels (SRW models)
  • 6-inch chromed tubular assist steps
  • Projector-beam headlamps with HID bulbs
  • LED signature front lighting
Exterior image showing the left side mirror of the 2018 GMC Sierra 3500 Denali HD premium heavy-duty pickup truck.

PREMIUM DUTY

  • Premium Trailering Mirrors
  • Spray-on bedliner
  • High-strength steel bed
  • CornerStep rear bumper
  • Available Amber Roof Marker Lamps (Standard with dual rear wheels)


OUR MOST POWERFUL DURAMAX DIESEL EVER

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Image of the all-new 6.6L Duramax diesel engine, available in the 3500 Denali HD premium heavy-duty pickup truck.

THE AVAILABLE 6.6L DURAMAX DIESEL ENGINE

  • 445 Horsepower
  • 910 lb.ft. of torque
  • Diesel exhaust brake helps reduce the brake pad wear on steep grades

Image of the Duramax logo, featuring enhanced driveline and cooling components.

ENHANCED DRIVELINE AND COOLING COMPONENTS

  • The induction system provides cooler airflow and contributes to the Duramax engine’s class-leading diesel horsepower rating

Image of the all-new fuel system and acoustic treated rocker covers, quieting the Duramax diesel engine.

QUIET OPERATION

  • This is the quietest idling Duramax diesel engine ever offered in a Sierra HD.


TRAILERING & HAULING

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Image of integrated trailering technologies that give you the confidence to control heavy loads.

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

Image of available rear vision camera on the 2018 Sierra 3500 Denali HD heavy-duty pickup truck.

VISION

  • Available Accessory Trailering Camera System by Echomaster3
  • Rear Vision Camera
  • Front and Rear Park Assist
Image of the truckbed of the 2018 Sierra 3500 Denali HD, capable of carrying up to 4,044 lbs.

CAPABILITY

  • Maximum Fifth-Wheel/Gooseneck rating of 23,100 lbs2
  • Maximum payload of 6,112 lbs4

INTERIOR

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Photo of the available heated and ventilated front seats of the 2018 Sierra 3500 Denali HD pickup truck.

LONG HAUL COMFORT

Standard features include:

 

  • Heated and ventilated, perforated leather-appointed front seats
  • Heated and leather-wrapped steering wheel
  • Durable soft-touch instrument panel
  • Aluminum trim accents

Photo of the triple door seals that help block outside noise in the 2018 Sierra 3500 Denali HD pickup truck.

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

Photo of the triple door seals that help block outside noise in the 2018 Sierra 3500 Denali HD pickup truck.

ENHANCED USABILITY

  • Large center console with space for hanging file folders, and laptops
  • 8” diagonal customizable Driver Information Center
  • Wireless charging pad5
  • 110V power outlet


TECHNOLOGY

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Image of available IntelliLink with 8" color-touch screen in the 2018 Sierra 3500 Denali HD pickup truck.

INTUITIVE INFOTAINMENT

  • 8" diagonal GMC Infotainment System with Navigation6
  • Access to phone, maps, and weather
  • Bluetooth® connectivity7
  • Download select in-vehicle apps via Shop

Image of available Bose premium speaker system in the 2018 Sierra 3500 Denali HD pickup truck.

PREMIUM AUDIO

  • Bose® Premium Speaker System
  • HD radio

Image of a tablet using the available 4G Wi-Fi Hotspot in the 2018 Sierra 3500 Denali HD pickup truck.

CONNECTIVITY

  • Apple CarPlay and Android Auto compatibility8
  • Available 4G Wi-Fi Hotspot9
  • OnStar Guidance Plan limited trial period10
  • myGMC mobile app11


SAFETY

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Image showing the driver alert technology in the 2018 Sierra 3500 Denali HD heavy-duty pickup truck.

DRIVER ALERTS

  • Lane Departure Warning
  • Forward Collision Alert
  • Safety Alert Driver Seat
Image showing the driver assist technology in the 2018 Sierra 3500 Denali HD heavy-duty pickup truck.

DRIVER ASSIST FEATURES

These standard features help provide clarity as you maneuver your Sierra 3500 Denali HD:

 

  • Front Park Assist
  • Rear Park Assist
  • Rear Vision Camera

Image showing the OnStar logo, providing safety and security in the 2018 Sierra 3500 Denali HD heavy-duty pickup truck.

SAFE AND SECURE

  • Six airbags12 including front head-curtain side-impact airbags
  • OnStar Automatic Crash Response limited service trial period11
  • OnStar Roadside Assistance limited service trial period

GMC SAFETY MESSAGE

Safety features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Read the vehicle’s Owner’s Manual for important feature limitations and information.

 

Your safety is very important to us. If you want to determine whether or not there is a recall on your current vehicle or on a vehicle you are considering, visit safercar.gov or call (888) 327-4236


PRO GRADE PROTECTION

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Standard on every 2018 GMC Sierra 3500 Denali HD heavy-duty truck, GMC Pro Grade Protection has you truly protected with features and services, including:
 

  • Two maintenance visits (includes DEF for diesel)13
  • 3-year/36,000-mile Bumper-to-Bumper Limited Warranty14
  • 5-year/60,000-mile Powertrain Limited Warranty14
  • 5-Year/60,000-mile Roadside Assistance & Courtesy Transportation14
  • HD 6.6L Duramax Diesel 5 year/100,000-mile Powertrain Warranty14
  • HD 6.6L Duramax Diesel 5 year/100,000-mile Roadside Assistance & Courtesy Transportation14
  • Limited service trial of OnStar10 Guidance Plan with a suite of emergency security and diagnostic services
  • 5-year OnStar Basic Plan15

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