2021 Chevrolet Silverado Heavy Duty in Alliston, ON

Chevrolet Silverado 2500HD & 3500HD at Ernie Dean

Ready to get to know the most powerful Silverado Heavy Duty ever? Yes, we mean of all time, powered forward by its two HD engine options, a bevy of towing capability and technology, and a durable build that guarantees this pickup holds up in the most demanding situations. For whatever worksite or job needed, there’s 5 different trim levels to choose from, with a selection of available packages and editions, to truly match your desires from a heavy duty truck. Follow along with us here at Ernie Dean, your local Alliston Chevrolet dealer, for a full overview of the 2021 Chevrolet Silverado 2500HD & 3500HD!

Browse our full line of Chevrolet pickups here: 2021 Chevrolet Colorado, 2021 Chevrolet Silverado 1500

Exterior Design

Trailering Mirrors

From design to capability to technology, the Silverado Heavy Duty is primed and designed for towing. The trailering mirrors provide a large view from their door-mount placement, with the ability for power adjustment, folding, extending and featuring four different lighting types, like ground illumination and perimeter lighting.


The Silverado HD may be a large beast, but it’s simple & convenient to interact with its large frame. The integrated bed steps come standard, allowing you to easily reach the gear in your cargo bed.

Snow Plow Versatility

When the snow falls during our winter Ontario months and shows no signs of leaving, put your Silverado HD to work with its snow-plow ready features. There’s no need to drill holes in the bumper to attach a snow plow, as the Heavy Duty pickup comes with a removable skid plate and front air dam.

Dimensions:Silverado 2500HD High Country (Crew Cab, Standard Bed)Silverado 3500HD High Country (Crew Cab, Standard Bed)
Length (mm/in) 6,349 / 249.95 6,349 / 249.95
Width (without mirrors) (mm/in)2,079 / 81.852,079 / 81.85
Height (mm/in)2,027 / 79.822,054 / 80.87
Wheelbase (mm/in)4,037 / 158.944,037 / 158,94
Cargo Box Length (on floor) (mm/in) 2,089 / 82.25 2,089 / 82.25
Cargo Box Width (on floor) (mm/in) 1,814 / 71.40 1,814 / 71.40
Ground Clearance (mm/in) 257 / 10.12 284 / 11.18
Cargo Volume (L) 1,968 1,968

Interior Design

Luxurious Feel

Your office on wheels, the interior of the Silverado Heavy Duty mirrors the best in comfort, technology, convenience and space of any office, just with incredible truck capability at your fingertips. Driver and passengers will enjoy comfortable spaciousness, alongside a seamless interior design that adds simple functionality to its easy-on-the-eyes build.


Your cargo bed and trailer in the rear aren’t the only parts of the pickup to get in on the cargo & gear storage fun. The interior of the Silverado HD features a host of storage options. Rear in-seatback storage compartments will keep your precious items safe and secure, while the available 24L storage space underneath the seat allows for convenient carry.

Dimensions: Silverado Heavy Duty High Country Crew Cab
Front Headroom (mm/in) 1,093 / 43.03
Rear Headroom (mm/in) 1,019 / 40.12
Front Legroom (mm/in) 1,131 / 44.53
Rear Legroom (mm/in) 1,102 / 43.40
Front Shoulder Room (mm/in) 1,677 / 66.02
Rear Shoulder Room (mm/in) 1,659 / 65.30
Front Hip Room (mm/in) 1,554 / 61.18
Rear Hip Room (mm/in) 1,530 / 60.24
Passenger Capacity 5

Performance & Capability


If awe-inspiring horsepower and torque is what you’re after (and why wouldn’t you be in a pickup of this quality), then the Duramax 6.6L V8 Turbo-Diesel is for you with 445 horsepower and 910 lb-ft of torque. Included is a GM segment exclusive air induction system alongside a variable geometry turbocharger that further showcases this engine’s prowess. The 6.6L V8 gas engine has unique tech of its own that make it a special option, with Direct Injection and Variable Valve Timing, itself reaching 401 horsepower and 464 lb-ft of torque.

Durable Build

Capability isn’t only bred from the engine of the Silverado HD, as its durable frame presents terrific power and efficiency straight off its build materials. The pickup was made with high-strength steel, 7 different types, in fact, all improved over the previous generation. The Durabed is fit to otuwork any Heavy Duty competitors, and comes fit with features like available LED lighting, 12 tie-downs and available 120-volt AC outlet.


If towing is what you need to do, then the Silverado Heavy Duty is what you need. The 2500 HD has a max towing ability of up to 18,410 lbs (8,396 kg), while the 3500 HD gets to a max towing ability of up to 36,000 lbs (16,329 kgs). What does all of that capability mean? It means the biggest jobs are not only easily accomplished with this HD pickup, but you’ll pull them off with supreme confidence as well.

View our Heavy Duty towing guide here.

Specifications: Duramax 6.6L V8 Turbo-Diesel 6.6L V8 Gas
Transmission Allison Automatic 10-speed 6-speed
Horsepower 445 401
Torque (lb-ft) 910 464
Max. Trailering Weight (lb/kg) 36,000 / 16,329 17,370 / 7,879


Connected Services

Connected Services on the Silverado are your ticket to the best in technology to keep you connected better than ever before. Whether cruising down a road or set up at a jobsite, control navigation, smartphone compatibility, OnStar features and much more.

Towing Technology

The Silverado HD combines both muscles and brains when it comes to towing. Towing technology onboard provides seasoned trailering professionals with even more convenience, while novice towers will more easily get the hang of it with these helping features.

  • 15 camera views
  • Advanced trailering system
  • Head-up display
  • StabiliTrak Electronic Stability Control (with Trailer Sway Control)
  • Tow/HaulMode
  • Auto Grade Braking
  • Digital Variable Steering Assist (available)


No matter if it’s work or play your Silverado HD is assisting you through, you need to be safe in an all-encompassing manner as only a Chevrolet can. Coming on this advanced safety system is a litany of features that provide helpful driver assistance and smart protection.

  • Front and Rear Park Assist
  • Lane Change Alert (with Side Blind Zone Alert)
  • Rear Cross Traffic Alert
  • Forward Collision Alert
  • Lane Departure Alert
  • Automatic Emergency Braking

What’s New From the 2020 Chevrolet Silverado Heavy Duty?

How does improved towing ratings and technology sound? Sounds pretty good, doesn’t it? It’s a reality on the 2021 Chevrolet Silverado, with a max towing rating that’s been increased to 36,000 lbs, thanks to upgrades on the suspension and wheels. New trailering tech to make your towing job even easier are features like a cargo bedview, trailer length indicator and jackknife alert. New appearance packages are available as well, highlighted by a Carhartt Edition.

2021 Silverado Heavy Duty Trims

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

Front side view of Chevrolet Silverado Heavy Duty WT


Starting at $53,448*

Highlighted features/configurations:

  • Work Truck Convenience Package (available)
  • Power windows & power door locks (available)
  • Black work assist step (available)
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Front side view of Chevrolet Silverado Heavy Duty Custom


Starting at $56,048*

Highlighted features/configurations:

  • 6L gas V8 engine
  • 20-inch machined aluminum wheels
  • Custom Value Package (available)
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Front side view of Chevrolet Silverado Heavy Duty LT


Starting at $58,148*

Highlighted features/configurations:

  • LT True North Z71
  • LT Duramax
  • LT Duramax True North
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Front side view of Chevrolet Silverado Heavy Duty LTZ


Starting at $67,548*

Highlighted features/configurations:

  • LTZ Z71 Plus
  • LTZ Z71 Premium


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Front side view of Chevrolet Silverado Heavy Duty High Country

High Country

Starting at $76,048*

Highlighted features/configurations:

  • Duramax 6.6L V8 turbo-diesel engine (available)
  • High Country Deluxe Package (available)
  • Z71 Off-Road Package (available)
  • 20-inch 16-spoke polished aluminum wheels
View Silverado Pickup Inventory

Want to make your ultimate towing dreams a reality? Then come see us at Ernie Dean Chevrolet Buick GMC, your local Ontario pickup superstore. Whether you’re ready to buy, or just have a few questions, our dedicated team is more than happy to talk trucks with you. Contact us, today, for new and used pickups, service, parts and more!

Research more about GM pickups here:

GMC Sierra Heavy Duty

GMC Sierra 1500

GMC Canyon

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