2018 GMC SIERRA 2500HD

2018 GMC Sierra Denali 2500HD

The available Duramax 6.6L offers the segment’s highest diesel horsepower rating.

Full-size truck

NEW FOR 2018

  • Exterior colors: Deep Mahogany Metallic, Red Quartz Tintcoat and White Frost Tricoat (later availability; crew cab only)
  • Tire pressure monitor system now includes tire fill alert
  • Rear-vision camera now standard on all models with cargo box
  • MyLink 7-inch radio system now standard on base model
  • New grille design on Denali


  • Regular, double cab and crew cab models are offered across the lineup. Regular cab models feature an 8’ box, while double cab and crew cab models are available with 6’6” or 8’ boxes
  • Trim levels include Sierra, SLE, SLT and Sierra Denali
  • Sierra Denali is offered exclusively as a crew cab and matches do-it-all capability with an exclusive package of design and upscale interior amenities, including a signature chrome grille, available 20-inch wheels, body-color front and rear bumpers, specific interior details, exclusive eight-inch customizable driver display, wireless phone charging and more
  • New Denali grille design features a multidimensional, sculpted interpretation that, like other contemporary GMC elements, was designed in a layered manner
  • Sierra All Terrain HD premium off-road package is offered on SLT crew cab 4WD models, featuring body-color grille, door handles and door moldings, black mirror caps and front skid plate, black assist steps, 18-inch aluminum wheels and all-terrain tires, spray-on bedliner, off-road suspension with Rancho twin-tube shocks, exclusive exterior and interior cues and more
  • All Terrain X HD package is available on SLT and includes specific 18-inch black aluminum wheels, Goodyear Wrangler DuraTrac tires, black bed-mounted sport bar and more
  • The off-road suspension is available on SLE and SLT models without the All Terrain package
  • Available Duramax 6.6L turbo-diesel V-8 engine offers segment leading horsepower: 445 hp (322 kW)
  • Standard automatic locking rear differential reacts in milliseconds in low-traction situations to improve safety and confidence on wet, snowy or muddy surfaces
  • Available Snow Plow Prep Package includes power feed for backup and roof emergency light, 220-amp alternator, forward lamp wiring harness, provision for roof-mounted lamp/beacon, underbody shields and heavy-duty front-springs
  • Nearly two-thirds of the cab structure composed of high-strength steel
  • Strong, versatile cargo box features two-tier loading capability, integrated tie-downs and accessibility via the CornerStep rear bumper and EZ Lift-and-Lower tailgate
  • Standard StabiliTrak with Trailer Sway
  • Integrated cruise control, auto grade braking and available diesel exhaust braking, for greater driving control and reduced brake wear on grades
  • Digital Steering Assist power steering enables easier handling and maneuverability, greater steering response, greater road-holding capability and greater stability control assistance (included on SLE, SLT and Denali crew cab models and double cab models with Duramax diesel engine)
  • Available Gooseneck/Fifth Wheel Trailering Prep Package
  • Available spray-on bedliner
  • Available LED cargo box lighting
  • Capless fuel fill (gas models with cargo box)
  • IntelliLink 7-inch-diagonal color touch screen radio is standard on base model
  • IntelliLink 8-inch system is standard on SLE and SLT; 8-inch system with navigation is standard on Denali and available on SLE and SLT
  • 4G LTE connectivity with Wi-Fi hotspot (includes three-month/3GB data trial)
  • Remote vehicle starting is standard on Denali and SLT; available on SLE
  • Remote locking tailgate is standard on Denali, SLT and SLE; available on base model
  • Heated and vented perforated leather-appointed front bucket seats and heated, leather-wrapped steering wheel are standard on Denali and available on SLT
  • Standard Teen Driver feature
  • Wireless device charging is standard on Denali and available on SLE and SLT


  • Air bags — crew cab: single-stage frontal and thorax side-impact, driver and front passenger, and head curtain side-impact, front and rear outboard seating positions. Double cab and regular cab: frontal airbags include driver single stage and front passenger dual-stage; thorax side-impact, seat-mounted, both driver and front passenger; head-curtain front and rear outboard seating positions. Passenger sensing system with infant-only suppression for passenger and passenger safety belt reminder status displayed on overhead console
  • Standard rear-vision camera system (not available with box delete)
  • Standard StabiliTrak stability control system with rollover mitigation technology, trailer sway control and hill start assist
  • Driver Alert Package is available on SLE and SLT and standard on Denali. Content includes Lane Departure Warning, Forward Collision Alert, Safety Alert Seat and Front and Rear Park Assist

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