AutoDeal Canada

GMC Sierra 2500HD 2023 for sale

12 vehicles available

Model & Year Overview

GMC Sierra 2500HD 2023

The 2023 GMC Sierra 2500HD adds the AT4X — GMC's most capable factory off-road configuration — equipped with Multimatic DSSV longitudinal dampers, Eaton front and rear locking differentials, and Goodyear Wrangler Territory MT tyres as standard fitment. The 6.6-litre Duramax diesel is the only engine available on the AT4X. The Denali Ultimate sub-trim adds a ground-projection logo system, 22-way power-adjustable seats, and Opus leather — a specification level that competes directly with the Ram 2500 Limited. The 13.4-inch GMC Infotainment 3 Plus display is available on SLT and above. The base Pro trim serves Canadian commercial fleet requirements with a durable build validated for northern mine-site duty cycles. Super Cruise hands-free driving makes its heavy-duty segment debut in 2023 on the Denali — a first in the class for Canada. Supplier allocations normalised in 2023 relative to the component-constrained 2021 and 2022 production years, improving used-market availability of fully optioned examples.

Average Price

From

$58 999

Listings

12

Frequently Asked Questions

01

How does the 2023 GMC Sierra 2500HD differ from the Sierra 1500 and what is it designed for?

The 2023 GMC Sierra 2500HD is a heavy-duty truck (2.5-ton class) designed for payload and towing capacities far exceeding the 1500 half-ton. The 2500HD can tow up to 14,969 kg (33,000 lb) in fifth-wheel configuration with the Duramax diesel — compared to 11,793 kg for the 1500 — and supports a payload of up to 1,655 kg. It is equipped with a more robust leaf-spring rear suspension and a reinforced frame. In Canada, it is popular among construction contractors, farmers, and owners of large travel trailers or Class C and Class A motorhomes. Typical Canadian buyers include boaters with 25- to 30-foot vessels on the Great Lakes or Lac Saint-Jean, ranchers in Alberta and Saskatchewan, and contractors hauling heavy equipment and materials. It also offers a cabin comfort level superior to traditional commercial work trucks, making it usable as a daily driver.

02

Which engine is recommended for the 2023 GMC Sierra 2500HD in Canada?

The 2023 GMC Sierra 2500HD is available with two powertrains: the 6.6L petrol V8 (401 horsepower, 464 lb-ft) and the 6.6L Duramax diesel V8 (470 horsepower, 975 lb-ft). The diesel is the preferred choice for the majority of Canadian buyers using the truck for regular heavy towing: its massive torque of 975 lb-ft from low revs considerably eases hill starts with a loaded trailer. Combined diesel fuel consumption is approximately 13.7 L/100 km — lower than the petrol V8 (17.2 L/100 km) during towing use. Over five years at 25,000 km annually with frequent towing, diesel fuel savings can reach $7,000 to $10,000, well offsetting the approximately $11,500 initial premium for the diesel option. The petrol V8 is recommended for those who use the 2500HD only occasionally for towing and prefer simplified maintenance without AdBlue or a diesel particulate filter.

03

What is the price of the 2023 GMC Sierra 2500HD in Canada and which trims are available?

The 2023 GMC Sierra 2500HD is offered in Canada in five trim levels: Regular (approximately $52,000), SLE (approximately $60,000), SLT (approximately $68,000), AT4 (approximately $74,000), and Denali (approximately $82,000). The Duramax diesel engine is available as an option on all trims for approximately $11,500 additional, and is standard on the Denali Ultimate. The AT4 version integrates off-road suspension, a rear locking differential, skid plates, and an advanced off-road management system with specific drive modes. The Denali is one of the most luxurious truck cabins on the Canadian market: massaging and ventilated leather seats, genuine walnut interior trim, MagneRide adaptive suspension, and the Multi-Pro camera system that lets you monitor your trailer in real time. Against the Ram 2500 Longhorn and Ford F-250 King Ranch, the Denali is positioned at a comparable refinement level and generally a similar price point.