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2018 GMC Sierra 3500HD Overview

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Heavy-duty trucks are for heavy-duty jobs, and they bring along with them an intimidating, rough-around-the-edges look. The 2018 GMC Sierra 3500HD has a dominating stance and an aggressive grille, turning heads around every corner. This heavy-duty pickup is designed for hard work.

The 2018 GMC Sierra 3500HD is available in four trims: 3500HD, SLE, SLT, and Denali; three cab styles: Regular, Double, and Crew; and two box lengths: Standard and Long.


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2018 GMC Sierra 3500HD

What’s New for the 2018 GMC Sierra 3500HD?

Three new exterior colors have been added to the Sierra 3500HD’s 2018 model year, although there’s a catch: these three colors (Deep Mahogany Metallic, Red Quartz Tintcoat, and White Frost Tintcoat) will only be available on the crew cab configuration, and their release will be delayed. The Denali’s grille has been completely redesigned, and the rear-vision camera is now a standard feature on all cargo-box models.

2018 GMC Sierra 3500HD Photos:

New for 2018 | Exterior | Performance | Interior | Safety

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2018 GMC Sierra 3500HD

2018 GMC Sierra 3500HD Exterior

With a rugged and tough exterior like this, taking on the GMC Sierra 3500 can be an intimidating task. The bed of this heavy-duty pickup is made of high-strength steel, able to withstand the toughest jobs. The truck comes with LED signature front lighting, too, so there’s no mistaking the GMC Sierra 3500HD for any other vehicle on the road.

The 2018 GMC Sierra 3500HD is available in eight exterior colors: Deep Mahogany Metallic, Onyx Black, Quicksilver Metallic, Summit White, Stone Blue Metallic, Cardinal Red, Dark Slate Metallic, and Red Quartz Tintcoat.

2018 GMC Sierra 3500HD Exterior Photos:

Exterior features available on the 2018 GMC Sierra 3500HD

  • HID headlamps with signature LED lighting, CornerStep rear bumper, Outside manual-extending trailer mirrors, Solar-absorbing glass, Cab-mounted cargo area lamps, Chrome grille surround, Tire carrier lock, 18-inch full-size steel spare wheel, Movable upper cargo tie-downs

Exterior features available on the 2018 GMC Sierra 3500HD SLE
-Adds to or replaces features on 3500HD-

  • Rear wheelhouse liners, Remote-locking tailgate, Black power-adjustable manual-folding vertical trailering mirrors with Amber running lamps, EZ-Lift and Lower tailgate, Deep-tinted glass, LED cargo box lighting

Exterior features available on the 2018 GMC Sierra 3500HD SLT
-Adds to or replaces features on SLE-

  • Fog lamps, Chrome outside mirrors

Exterior features available on the 2018 GMC Sierra 3500HD Denali
-Adds to or replaces features on SLT-

  • Spray-on bedliner, 6-inch chromed assist steps, Rear-sliding power windows with rear defogger

New for 2018 | Exterior | Performance | Interior | Safety

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2018 GMC Sierra 3500HD

2018 GMC Sierra 3500HD Performance

Behind the wheel of the Sierra 3500HD, you can choose between a regular gasoline engine or a diesel engine. The standard engine is a 6.0-liter Vortec V8, which is paired to a heavy-duty six-speed automatic transmission and produces 360 horsepower and 380 lb-ft of torque. You can upgrade to a 6.6-liter Duramax Turbo-Diesel V8 engine paired to an Allison 1000 six-speed automatic transmission, which produces 445 horsepower and a staggering 910 lb-ft of torque.

New for 2018 | Exterior | Performance | Interior | Safety

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2018 GMC Sierra 3500HD

2018 GMC Sierra 3500HD Interior

You would never guess the Sierra 3500HD is a pickup from inside the cabin. Not only is the interior spacious, comfortably seating up to six passengers (more than most sedans!), but it comes with premium materials and technology. To maximize on your cabin space, the Sierra 3500HD offers front and rear 40/20/40-split bench seats. These bench seats can add leather-trimmed materials and heated and ventilated capabilities, too. The Denali also comes with leather-appointed bucket seats and a heated steering wheel.

The 2018 GMC Sierra 3500HD is available in three interior colors: Jet Black, Jet Black/Dark Ash, and Cocoa/Dune.

2018 GMC Sierra 3500HD Interior Photos:

Interior features available on the 2018 GMC Sierra 3500HD

  • Interior: Power windows and door locks, Front 40/20/40-split bench seats, Manual tilt steering column, 3.5-inch monochromatic Driver Information Center, Assist handle for front passenger and driver, Air conditioning
  • Radio and Technology: Voice-activated technology for radio and phone, USB port, Bluetooth streaming audio, 7-inch GMC Infotainment System, Auxiliary input jack, AM/FM stereo with seek-scan and digital clock, Apple CarPlay and Android Auto capability

Interior features available on the 2018 GMC Sierra 3500HD SLE
-Adds to or replaces features on 3500HD-

  • Interior: 4.2-inch multi-color Driver Information Center, Illuminated visor vanity mirrors, Remote Keyless Entry, Leather-wrapped steering wheel with cruise and audio controls
  • Radio and Technology: OnStar 4G LTE with build-in Wi-Fi hotspot, Single-slot CD/MP3 player, SiriusXM Satellite Radio with three trial months, HD Radio capability, Gesture recognition, 8-inch GMC Infotainment System

Interior features available on the 2018 GMC Sierra 3500HD SLT
-Adds to or replaces features on SLE-

  • Interior: Leather-appointed front 40/20/40-split bench seat, Remote vehicle starter system, Universal Home Remote, Power outlets, Tilt and telescopic steering column, Front and rear carpeted floor mats, Driver and front passenger heated seats, Power-adjustable pedals, Rear window defogger

Interior features available on the 2018 GMC Sierra 3500HD Denali
-Adds to or replaces features on SLT-

  • Interior: Heated steering wheel, Front heated and ventilated leather-appointed bucket seats, Wireless charging
  • Radio and Technology: Front and Rear Park Assist, Forward Collision Alert, Seven-speaker Bose sound system with subwoofer, Lane Departure Warning, 8-inch GMC Infotainment System with GPS navigation system with 2D and 3D maps

New for 2018 | Exterior | Performance | Interior | Safety

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2018 GMC Sierra 3500HD

2018 GMC Sierra 3500HD Safety

With a large truck like the Sierra 3500HD, maneuverability can be a challenge. GMC has included a rear-vision camera and Daytime Running Lamps as standard features on the Sierra 3500HD. These features not only increase maneuverability, but also visibility to create a safer environment for the driver and surrounding vehicles.

Standard Safety Features on the 2018 GMC Sierra 3500HD

  • Daytime Running Lamps
  • Rear Vision Camera
  • Airbags – single stage frontal and thorax side impact, driver and front passenger, head curtain side-impact, and front and rear outboard seating positions

New for 2018 | Exterior | Performance | Interior | Safety

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