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OUR MOST POWERFUL DURAMAX DIESEL EVER

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THE AVAILABLE ALL-NEW 6.6L DURAMAX DIESEL ENGINE

  • 445 Horsepower
  • 910 lb.ft. of torque
  • 12% increase in horsepower and 19% increase in torque vs previous model
  • Learn more on GMC Life

ENHANCED DRIVELINE AND COOLING COMPONENTS

  • An all new induction system provides cooler airflow and contributes to the increased horsepower rating of the engine
  • Radiator capacity was increased over previous models to provide enhanced powertrain cooling performance
  • Driveline enhancements were made to increase strength and improve reliability. These enhancements include a stronger front prop shaft and larger U-joints

QUIETER OPERATION

This is also the quietest idling Duramax diesel engine ever offered in a Sierra HD. Features contributing to its improved quiet operation include an all-new fuel system and acoustic treated rocker covers.


TRAILERING & HAULING

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CONTROL

  • Available Duramax Diesel power and integrated trailering technologies 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

VISION

  • Available Accessory Trailering Camera System
  • Rear Vision Camera
  • Front and Rear Park Assist

CAPABILITY

  • Maximum conventional trailering capacity of 20,000 lbs2, maximum Fifth-Wheel/ Gooseneck rating of 23,100 lbs2, and maximum payload of 6,112 lbs3
  • Strengthened driveline: stronger front prop shaft with larger U-Joints
  • Available Integrated Fifth-Wheel / Gooseneck Prep Package Learn More on GMC Life.


EXTERIOR

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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.

SIGNATURE STYLE

  • Hood scoop (induction system) on the Duramax-equipped models provides cooler airflow and contributes to the increased horsepower rating of the engine
  • Bold Denali chrome grille
  • 20-inch chromed aluminum wheels
  • 6-inch chromed tubular assist steps
  • Projector-beam headlamps with HID bulbs
  • LED signature front lighting

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)


INTERIOR

 

  

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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

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

ENHANCED USABILITY

  • Large center console with space for hanging file folders, and laptops
  • 8” customizable Driver Information Center
  • Wireless charging pad4
  • 110V power outlet


TECHNOLOGY

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INTUITIVE INFOTAINMENT

  • IntelliLink 8" color-touch radio with Navigation5
  • Access to phone, maps, and weather
  • Bluetooth® connectivity6
  • Download select in-vehicle apps via Shop

PREMIUM AUDIO

  • Bose® Premium Speaker System
  • HD radio

CONNECTIVITY

  • Apple CarPlay and Android Auto compatibility7
  • Available 4G Wi-Fi Hotspot8
  • OnStar 3-month trial period9
  • myGMC mobile app10 5-year trial period


SAFETY

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DRIVER ASSIST FEATURES

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

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

SAFE AND SECURE

  • Six airbags including front head-curtain side-impact airbags
  • OnStar Automatic Crash Response three-month trial period
  • OnStar Roadside Assistance three-month trial period


PRO GRADE PROTECTION

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Standard on every 2017 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)11
  • 3-year/36,000-mile Bumper-to- Bumper Limited Warranty12
  • 5-year/ 60,000-mile Powertrain Limited Warranty12
  • HD 6.6L Duramax Diesel 5 year/100,000-mile Powertrain Warranty12
  • 5-Year/60,000-mile Roadside Assistance & Courtesy Transportation12
  • HD 6.6L Duramax Diesel 5 year/100,000-mile Roadside Assistance & Courtesy Transportation12
  • 3-month trial of OnStar9 Guidance Plan with a suite of emergency security and diagnostic services
  • 5-year OnStar Basic Plan13

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