2018 GMC Sierra 3500HD Chassis Cab Heavy Duty Truck from GM Fleet

2018 GMC Sierra 3500HD Chassis Cab Truck Interior view from GM Fleet

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  • MSRP1 starting at
    Excludes third-party upfits

    Max GVWR*:
    13,200 lbs
    Max Payload**:
    7,287 lbs.

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2018 GMC Sierra 3500HD Chassis Cab

The 2018 Sierra 3500HD Chassis Cab delivers incredible versatility to be the ideal heavy-duty truck for any fleet. Offering 3 different engines and over 3.5 tons of available payload**, the GMC Sierra 3500HD Chassis Cab can be configured to meet your specific needs and handle your toughest jobs.

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  • Upfitter-friendly versatility, including 2 cab configurations with dual rear wheels, over 3½ tons of available payload** plus over 30,000 lbs. GCWR2 (when properly equipped)
  • Advanced technology to help keep you connected to your business and customers with available OnStar® 4G LTE with built-in Wi-Fi hotspot3
  • Covered by GMC Pro Grade Protection, which includes 2 maintenance visits4; services included are Oil and Filter change, 4-Wheel Tire Rotation, and Multi-Point Vehicle Inspection
  • Features, Specs, Trims and Dimensions to fit the needs of your fleet.



Features based on 1SA unless otherwise noted

Safety and Security

  • Air Bags5: frontal single stage for driver and right front passenger
  • Daytime Running Lamps and automatic lamp control
  • Front Passenger Air-Bag5 Deactivation Switch
  • 4-wheel Antilock Disc Brakes
  • StabiliTrak® Electronic Stability Control System with Proactive Roll Avoidance, Trailer Sway Control and Hill Start Assist


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.

Engine Availability

  • Standard Vortec® 6.0L V8 engine with 360 horsepower and 380 lb.-ft. of torque
  • Available Duramax® 6.6L Turbo-Diesel V8 engine, B20-Diesel compatible (requires Allison® 1000 6-speed automatic transmission)


  • 6-speed automatic, heavy-duty, electronically controlled transmission with overdrive and tow/haul mode; includes Cruise and Powertrain Grade Braking
  • 4-wheel antilock disc brake system
  • Heavy-duty locking rear differential
  • External auxiliary transmission oil cooler
  • External Engine Oil Cooler


  • Reclining front 40/20/40 split-bench seat; vinyl or cloth
  • Rear 60/40 split-bench fold-up seat (Crew Cab)
  • Air conditioning
  • Tilt-wheel adjustable steering column
  • Cruise control
  • Audio system includes 7" diagonal Color Touch Screen with GMC Infotainment System, AM/FM stereo with USB ports6, auxiliary jack, Bluetooth®7, Pandora Internet Radio8, Apple CarPlay™9 and Android Auto™10 compatibility and voice-activated technology for radio and phone and 6-speaker system


  • LT235/80R17E highway tires
  • Front frame-mounted recovery hooks
  • Front chrome bumper
  • Halogen projector headlamps and smoked amber roof lamps



Options available on certain models only. See Ordering Guide for details.

  • Seating options: power, buckets, cloth or leather seating surfaces, heated
  • Power adjustable pedals
  • 2 additional audio system options up to/including 8" diagonal Color Touch-Screen Navigation11 with GMC Infotainment System
  • OnStar® Guidance Plan12 for 6-months trial period (trial excludes Hands-Free Calling)
  • Available OnStar® 4G LTE with built-in Wi-Fi® hotspot3 includes OnStar® Data Trial for 3GB or 3 months (whichever comes first)
  • Allison 1000 6-speed automatic transmission (with available Duramax® engine)
  • Electronic shift 4WD transfer case with rotary controls
  • Exhaust brake (with available Duramax® engine)
  • Power Take-Off (with available Duramax® engine)
  • Upfitter switches — 3 with diesel engine/4 with gas engine
  • Single front or rear fuel tanks (single rear with diesel only)
  • Remote Keyless Entry and Remote Vehicle Start System
  • Integrated trailer brake controller
  • Manual diesel particulate filter regeneration