The all-new
2026 GMC Sierra 3500:
price and full specs

When maximum towing and payload capability become a priority, the 2026 GMC Sierra 3500 stands out as a benchmark in the heavy-duty truck segment. Starting at $71,825, it is available in a wide range of configurations, including multiple cab styles, bed lengths, engine options, two-wheel or four-wheel drive, and single or dual rear wheels, allowing you to match the truck to your specific work requirements.*

At GM Paillé in Berthierville and Sorel-Tracy, our team works every day with business owners, contractors, and truck buyers looking for the right heavy-duty pickup. Choosing a Sierra 3500 is about more than selecting a trim level—it's about finding the configuration that delivers the towing capacity, payload, and capabilities your work demands.

In this guide, we'll walk you through the available trims, powertrains, capabilities, technologies, and lease and financing options to help you decide whether the 2026 GMC Sierra 3500 is the right HD truck for your needs.

In summary

  • The 2026 GMC Sierra 3500 shows a starting price of $71,825*.
  • Two engines are offered: a 6.6L gas V8 with 401 horsepower and 464 lb-ft, or a 6.6L Duramax turbodiesel V8 with 470 horsepower and 975 lb-ft.
  • Maximum towing capacity reaches up to 36,000 lb. (16,330 kg) in the right configuration.
  • You can step into the dually world, since the 2026 Sierra 3500 HD offers single or dual rear wheels.
  • At GM Paillé in Berthierville or Sorel-Tracy, we offer the 2026 Sierra 3500 HD with very attractive leasing options.

Trims and prices for the 2026 GMC Sierra 3500

The GMC Sierra 3500 has a base price of $71,825* in Canada. Pricing varies significantly by configuration, so here is a list of prices for 2026 GMC Sierra 3500 trims equipped with the crew cab and the standard cargo bed, since that setup applies across the lineup.

If you select a different configuration, the price will change accordingly:

Trim Price*
Pro 2WD $75,925
Pro 4WD $79,425
SLE 4WD $85,225
SLT 4WD $94,725
AT4 4WD $103,425
Denali 4WD $107,425
Denali Ultimate $132,525


* Maximum capacity when the truck is properly equipped. To be confirmed based on the vehicle's exact configuration.

As you can see, the 2026 GMC Sierra 3500 is ready for driving in Quebec, thanks to the 4WD system.

Remember that at Paillé, you can find a 2026 GMC Sierra 3500 with an excellent financing rate, and we can also help you compare the Chevrolet Silverado 3500 HD vs. the GMC Sierra 3500 HD to help you find the truck that fits your situation and budget.

What’s new for the 2026 GMC Sierra 3500

The 2026 GMC Sierra 3500 HD sees few changes compared to the previous model. GMC retains the same engine options, core configurations, and trim lineup, continuing with a proven platform that has already established itself in the heavy-duty truck segment.

The main update is a slight increase to the starting MSRP. Otherwise, the truck's capabilities, available features, and overall lineup remain largely unchanged from the previous model.

Browse Our New HD Trucks

2026 GMC Sierra 3500: powertrains, performance and towing capacity 

Starting at $71,825, the 2026 GMC Sierra 3500 is available with two powertrain options designed to meet different needs:*

  • Standard on most trims, the 6.6L V8 gas engine delivers 401 horsepower and 464 lb-ft of torque, paired with a 10-speed automatic transmission.
  • For maximum Sierra 3500 towing capacity, the available 6.6L Duramax Turbo-Diesel V8 produces 470 horsepower and 975 lb-ft of torque, also paired with a 10-speed automatic transmission.

The Sierra 3500 towing capacity varies depending on the engine and configuration you choose. When properly equipped with the Duramax diesel, the Sierra 3500 can tow up to 36,000 lb. Its exceptional torque also makes hauling heavy loads, climbing steep grades, and towing over long distances easier and more confident.

Engine choice is only one factor that affects the truck's overall capability. Cab configuration, bed length, two-wheel drive or four-wheel drive, single or dual rear wheels, and selected equipment all influence towing capacity and payload. If your towing and hauling needs are less demanding, the GMC Sierra 2500 HD may be a better fit.

PRO ADVICE

“This is where the Sierra 3500 shows its true colours. It gives you serious muscle, and you also enter the world of double rear wheels. It is a massive truck, built for real heavy work and regular intensive needs. It’s not the pickup you choose to slip easily through narrow city streets.”

‒ Alexandre Rivest, Sales Consultant

2026 GMC Sierra 3500: dimensions and weight

The GMC Sierra 3500 HD shows weight and dimensions that vary widely by configuration. It is available as a 3-seat regular cab, a 6-seat double cab, and a 6-seat crew cab that is even more spacious.

For the bed, you can choose a standard 2,089 mm cargo bed or a long 2,496 mm cargo bed. Depending on configuration, the truck can also be fitted with single rear wheels or dual rear wheels, which obviously changes its mission and load potential.

Maximum payload can reach 7,290 lb. (3,307 kg) on specific trims.

PRO ADVICE

“Simply put, the higher you go in luxury, the more you trade a bit of raw capacity for refinement. It is not a flaw. It is just the product logic.”

‒ Alexandre Rivest, Sales Consultant

2026 GMC Sierra 3500: onboard technology and driver assistance systems

Even though this is a very big truck, you will see that, for the price of a 2026 GMC Sierra 3500 HD, you are well served on the tech side. Depending on trim and options, here is what you could find inside your truck:

  • ProGrade trailering system
  • Adaptive cruise control with trailering
  • Up to 13 or 14 camera views
  • A 13.4-inch GMC touch screen
  • A 12.3-inch digital driver cluster
  • Wireless Apple CarPlay and Android Auto
  • A 15-inch Head-Up Display
  • Heated and ventilated seats
  • A Bose 12-speaker sound system
  • And much more

The message is clear. The Sierra 3500 lets you drive an HD truck without feeling like you’re in a construction-site cockpit.

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5 reasons to choose the 2026 GMC Sierra 3500 according to Alexandre Rivest, sales consultant at GM Paillé

  1. It covers the heaviest needs: trailers, equipment, heavy machinery, massive travel trailers, or commercial use.
  2. The Duramax diesel changes the game with its 975 lb-ft of maximum torque.
  3. Dual rear wheels unlock a higher level of capability.
  4. Trailering tech really helps, especially when reversing or manoeuvring with a heavy load.
  5. The lineup is broad, from the work-focused Pro to the very refined Denali Ultimate.

Spec sheet and prices for the 2026 GMC Sierra 3500

Here are the key numbers to remember:

Item Details
Starting price $71,825*
Trims Pro, SLE, SLT, AT4, Denali, Denali Ultimate
Engines 6.6L gas V8 or 6.6L Duramax turbodiesel V8
Power / maximum torque Up to 470 horsepower and 975 lb-ft
Maximum towing 36,000 lb.
Cabs Regular, Double, Crew
Cargo Beds Standard or long
Rear Wheels Single or dual, depending on configuration
Key tech ProGrade, multiple cameras, transparent trailer view, 13.4-inch and 12.3-inch displays depending on trim

 

Frequently asked questions about the 2026 GMC Sierra 3500 specs

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