2022 GMC Sierra Heavy Duty in Alliston, ON

GMC Sierra 2500HD & 3500HD at Ernie Dean

The 2022 GMC Sierra Heavy Duty is the best hardworking pickup truck you can get here in Ontario, one that doesn’t sacrifice on style, luxury or tech. Across the Pro, SLE, SLT, AT4 and Denali trim levels you’ll be met with supreme towing ability, generous cargo bed space, convenient comfort features, advanced safety and so much more. Whether you’re on the job site, off-road, or just driving through the country or city, the 2022 GMC Sierra 2500HD & 3500HD pickups provide the benchmark of what all heavy duty trucks strive to be. Learn more about the Sierra HD here at Ernie Dean, and shop for one for sale at our local GM dealership in Alliston!

View our Heavy Duty towing guide here

Browse our lineup of GMC pickups here, including: GMC Sierra 1500, GMC Sierra 1500 Elevation, GMC Sierra 1500 Denali, GMC Canyon

Interested in more pickup truck models? Explore these options:

Chevrolet Silverado 1500

Chevrolet Colorado

GMC Hummer EV

Exterior Design

Heavy Duty Features

The Sierra 2500 & 3500 are both large and in charge, presenting a huge exterior that’s ready to accomplish any job thanks to its heft, alongside fine-detail highlights that underline its size with top-level features.

  • Trailering Mirrors: These power-fold mirrors will manually extend and retract, complete with LED guidance lights to improve visibility. Available on all models, include other features like LED perimeter lighting, LED forward auxiliary task lighting, and more.
  • Side Bed Step: This complementary piece to the CornerStep allows you to easily grab your gear from the bed.
  • Dual-Path Air Induction System: On the 6.6L Duramax Turbo-Diesel engine comes this Dual Path Air Induction system, taking in cool air through the hood scoop and front grille to cool the inside temperature and increase performance.
  • Lighting: Featured is LED headlights, LED tail lights, LED daytime running lamps, available LED fog lamps, available LED cargo bed lights and more.

AT4 Highlights

Want a heavy duty pickup that’s specifically designed to tackle your off-road needs, and does so in an athletic style? The AT4 pairs these both together to deliver a truly modern HD Sierra option. The AT4 is highlighted by many features, including:

  • Exclusive style features
  • Vertical red recovery hooks
  • High clearance step

Denali Premium Highlights

For the best of the best on the Sierra 2500HD & 3500HD, acquaint yourself with the top-level Denali trim, featuring the ultimate in premium touches. These are all highlighted by the following:

  • Signature Denali grille (featuring chrome inserts)
  • Chrome 6-inch assist steps
  • Chrome vertical front recovery hooks
  • Chrome handles
  • Chrome mirror caps
  • Dual-Path Air Induction system
  • 20-inch Multi-Dimensional polished aluminum wheels
  • MultiPro tailgate

Cargo Bed & Tailgate

The heavy-duty cargo bed comes with best-in-class volume, with standard and long bed options on a roll-formed high-strength steel floor. 12 cargo tie-downs will keep your cargo secure, while available LED lighting and a spray-on bedliner provide further utility to get the most out of your bed. The unique MultiPro tailgate provides 6 different ways to open, which are:

  • Primary Gate
  • Primary Gate Load Stop
  • Easy Access
  • Full-Width Step
  • Inner Gate Load Stop
  • Inner Gate with Work Surface

Exterior Dimensions

Dimensions:Sierra 2500 HD Denali Crew Cab Standard BedSierra 3500 HD Denali Crew Cab Standard Bed
Length (mm/in)6,352 / 250.086,759 / 266.09
Width (without mirrors) (mm/in)2,079 / 81.852,079 / 81.85
Height (mm/in)2,027 / 79.822,049 / 80.67
Wheelbase (mm/in)4,037 / 158.944,369 / 172.00
Cargo Box Length (on floor) (mm/in)2,088 / 82.2024,96 / 98.27
Cargo Box Width (on floor) (mm/in)1,814 / 71.401,814 / 71.40
Ground Clearance (mm/in)257 / 10.12283 / 11.14
Cargo Volume (L)1,9682,364

Interior Design

Interior Comfort Highlights

Every piece of the interior inside the Sierra HD was designed with the best intentions of the driver and passengers in mind. Both elegant and spacious, the cabin is designed to meet those inside with high quality materials and a design that is supremely intuitive. Top highlights include:

  • Available leather-wrapped heated steering wheel
  • Heated/ventilated front leather-appointed seats
  • Dual-zone climate control to regulate temperature

AT4’s Adventure-Ready Interior

The beauty of the AT4 is that it expertly balances perfectly styled interior touches with purposeful features.

  • Heated/ventilated front leather seat surfaces
  • Heated leather-wrapped steering wheel
  • Jet Black & Kalahari interior
  • Front & rear floor liners (featuring removable carpet inserts)
  • AT4 embroidered logos
  • Rear seatback, plus under-seat storage
  • HVAC system, with dual-zone climate control
  • Rear-seat outlets

Premium Denali Interior

The ultimate in premium features of the Denali’s exterior is continued on the inside with its elegant touches throughout.

  • Jet Black & Denali Dark Walnut/Dark Ash Grey interiors
  • Open-Pore Ash Wood, brushed aluminum trim, chrome accents
  • Heated rear outboard seats
  • Leather seat surfaces with heated/ventilated bucket seats


It’s not just the generous cargo bed that’s available to take on all of the gear you desire to haul and store onboard, the interior includes a variety of smart storage options, too, including:

  • Rear seat storage: featuring available seatback storage that safely stays secure.
  • Rear-fold split bench: found on Crew Cab models you can easily stash your gear conveniently in the under-seat storage.
  • Centre console: this centre console is lighted, lockable and with lower and upper glove box options.
Dimensions:Sierra 2500 HD Denali Crew Cab Standard BedSierra 3500 HD Denali Crew Cab Standard Bed
Front Headroom (mm/in)1,093 / 43.031,093 / 43.03
Rear Headroom (mm/in)1,013 / 39.881,019 / 40.12
Front Legroom (mm/in) 1,131 / 44.53 1,131 / 44.53
Rear Legroom (mm/in)1,102 / 43.401,102 / 43.40
Front Shoulder Room (mm/in)1,677 / 66.021,677 / 66.02
Front Shoulder Room (mm/in)1,659 / 65.301,659 / 65.30
Front Hip Room (mm/in)1,554 / 61.181,554 / 61.18
Rear Hip Room (mm/in)1,530 / 60.241,530 / 60.24
Passenger Capacity55

Performance & Capability

Engine & Transmission Options

The Sierra 2500HD & 3500HD models come fit with your choice of two engines, either the 6.6L V8 gas engine as standard or the available 6.6L Duramax Turbo-Diesel V8 engine (with the Allison 10-speed automatic transmission). These advanced engines combine for brawny power that delivers a stable and powerful drive, and a confident trailering experience when towing.

HD Capability

This heavy duty pickup delivers high-powered engine performance thanks to some of its top AT4 and Denali features.

  • Suspensions: The independent front suspensions equal exceptional wheel alignment, a comfortable ride and easy turnability.
    • Payload and ride quality is managed in equal measure thanks to the two-stage, semi-elliptic multi-leaf rear springs.
  • Engine Performance: To keep the truck at the perfect temperature with the Duramax engine is a big 28-inch cooling fan that’s put to work, with the Dual Path Air Induction system drawing in cool air.
    • A Diesel After-Run also helps to cool the engine down after heavy activity.

Stop & Go Tech

Stop & Go technology mixes and matches performance capability with advanced tech that provides supremely effective whether you’re stopped or on the go. These many features include:

  • Auto Electric Parking Brake Assist
  • Park Grade Hold Assist
  • Digital Variable Steering Assist
  • 2-Speed Autotrac Transfer Case (available)
  • Traction Select System (with Tow/Haul and Off-Road Mode) (available)

Add-On Packages

Add even more capability and utility onto your Sierra HD with these hardworking and adventurous package options that will further set you up for success whether off-road, towing or both.

  • X31 Off-Road Package:
    • Off-road suspension
    • Underbody skid places
    • Twin-tube Rancho shocks
    • Eaton automatic locking rear differential
  • Gooseneck/5th Wheel Hitch Package:
    • Hitch platform for gooseneck or 5th wheel hitch
    • Hitch platform for ball and stamped bed holes (removable caps installed)
    • Bed-mounted 7-pin trailer harness
    • Bed View Camera (available)
Specifications:6.6L Gas V86.6L Duramax Turbo-Diesel V8
Transmission6-speed automatic (heavy duty), Allison 10-speed automatic6-speed automatic (heavy duty), Allison 10-speed automatic
Torque (lb-ft)464910


ProGrade Trailering System

Get the most out of your trailering experience with the Sierra HD and its ProGrade Trailering system. This intelligent tech makes everything from hitching to towing a breeze, providing an easy-to-use command centre to stay up-to-date with the entire system. Features include:

  • In-vehicle trailering app
  • myGMC mobile app
  • Smart trailer integration
  • Jack-knife alert (available)

Trailering Camera & View Systems

Get the best perspective in and around the Sierra Heavy Duty thanks to the variety of camera and view features found onboard. These features include:

  • 15 available camera views available (from HD Surround Vision, Rear Camera Mirror and Bed View Camera)
  • Bed view with zoom & hitch guidance
  • Rear trailer view
  • Forward and reverse rear side view bias
  • Jackknife alert
  • 15-inch head-up display


Your pickup and smartphone can simply connect to make a whole thanks to the connective options of Apple CarPlay and Android Auto to make use of your favourite device’s apps. Amazon Alexa is built-in, providing another destination for navigation, entertainment, calls and much more.


Safety & Driver Assistance Tech

Be better prepared and aware of all that’s around you on each and every drive thanks to the safety and driver assistance technology found aboard the Sierra HD. These intelligent features provide helpful aid making sure your next ride is as safe as possible. Highlighted features include:

  • Lane Departure Warning: to ensure you stay in your lane with alerts if you drift.
  • Front & Rear Park Assist: to detect close-by objects when you’re parking.

Advanced Safety

The Sierra HD never settles for less when it comes to hardworking performance, and doesn’t do so either when it comes to advanced safety features. Some of these top-level systems include:

  • Automatic Emergency Braking
  • Following Distance Indicator
  • Forward Collision Alert
  • Lane Change Alert (with Side Blind Zone Alert)
  • Rear Cross Traffic Alert
  • Safety Alert Seat
  • Intellibeam
  • Teen Driver

What’s New From the 2021 GMC Sierra Heavy Duty?

No major changes were seen out of this new 2022 GMC Sierra HD model, operating much the same as it did last year with the 2021 iteration.

2022 Sierra Heavy Duty Trims

*These trims & prices are reflective of the 4WD 2500HD Crew Cab Standard Bed models, and are subject to change

Front side view of GMC Sierra 1500 Heavy Duty Pro


Starting at $54,848*

Highlighted features:

  • 16,329 kg max towing
  • ProGrade Trailering System
  • Advanced camera views
  • MultiPro tailgate
View GMC Pickup Inventory
Front side view of GMC Sierra Heavy Duty SLE


Starting at $60,148*

Highlighted features:

  • 16,329 kg max towing
  • ProGrade Trailering System
  • Advanced camera views
  • MultiPro tailgate
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Front side view of GMC Sierra Heavy Duty SLT


Starting at $69,048*

Highlighted features:

  • 16,329 kg max towing
  • ProGrade Trailering System
  • Advanced camera views
  • MultiPro tailgate
View GMC Pickup Inventory
Front side view of GMC Sierra Heavy Duty AT4


Starting at $71,348*

Highlighted features:

  • Off-road suspension
  • Exclusive black chrome exterior accents
  • Allison 10-speed automatic transmission
  • Exclusive athletic interior
View GMC Pickup Inventory
Front side view of GMC Sierra Heavy Duty Denali


Starting at $78,248*

Highlighted features:

  • Signature Denali grille
  • Open-pore ash wood, brushed aluminum trim
  • Allison 10-speed automatic transmission
  • Head-up display
View GMC Pickup Inventory

Ernie Dean is your one-stop destination for everything you want to know about trucks! From GMC to Chevrolet, from light-duty to heavy-duty, if it’s a pickup we have what you need. Whether that’s shopping for a new or used model, finding parts, getting service, or if you just want to chat, we here at Truckville will be happy to help you out! Contact us, today, with any questions, or fill out the form below to book a test drive!

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