Used GMC Sierra 2500HD for Sale near Seguin, ON

How much does the GMC Sierra 2500HD cost in today's market?

Used GMC Sierra 2500HD prices span a wide range depending on model year. Here's what the market looks like right now:

The GMC Sierra 2500HD's current nationwide average price is $70,132 CAD, and its lowest point over the past year was $66,595 CAD. Recently, prices have come down for the 2023, 2024, and 2025 models, making now a good time to shop recent model years.

Is the GMC Sierra 2500HD a good car?

Yes — the GMC Sierra 2500HD is a strong choice if you want heavy-duty capability with a more upscale feel. The all-generations owner rating is 4.5/5 across every model year in the data.

Owners consistently praise its power, towing ability, comfortable ride, and premium-feeling features. Across the newer model years, the truck also stands out for its strong cabin comfort and work-ready refinement.

Expert reviews rate the 2024 and 2022 models among the highest across all years.

The main trade-offs are fuel consumption, high pricing on upper trims, and some reported quality and infotainment issues in recent years. 27.5% of listings are priced as good or great deals.

Are GMC Sierra 2500HD models reliable?

Owners consistently praise the GMC Sierra 2500HD for its power, towing capability, comfort, and strong overall performance. Expert commentary also points to a premium-feeling truck with serious capability and a broad feature set.

• Owners rate the GMC Sierra 2500HD between 3.5 and 5 out of 5 stars across all model years in the data.

For used buyers, long-term ownership risk is best managed by checking service history carefully and focusing on well-maintained trucks with documented upkeep.

What should I look for when buying a used GMC Sierra 2500HD?

Key things to evaluate:

• Safety package: GMC Sierra HD standard safety features include automatic emergency braking, forward collision warning, pedestrian detection, and lane departure warning, while the Denali Ultimate adds front and rear parking sensors, a surround-view parking camera, adaptive cruise control, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.
• Infotainment: The Denali Ultimate features a 13.4-inch screen with wireless Apple CarPlay and Android Auto, a wireless device charging pad, Google built-in, a 12-speaker Bose surround-sound audio system, and split-screen navigation.
• Fuel efficiency: During long highway stints the Duramax diesel dipped as low as 11.2 litres per 100 kilometres, and at suburban/city speeds economy ratings crested well beyond 20 L/100 km.

Which GMC Sierra 2500HD trim should I buy?

The 2024 GMC Sierra 2500HD offers these trims:

• Pro: The entry trim for buyers who want the Sierra HD’s core heavy-duty capability in the most straightforward package.
• SLE: A step up for shoppers who want more equipment while staying close to the truck’s value-focused side.
• SLT: A strong all-rounder that adds more comfort and convenience for buyers who split time between work and daily use.
• AT4: The off-road-oriented choice, with skid plates, off-road suspension upgrades, a more robust transfer case, and standard 4WD from this trim up.
• Denali: The luxury-focused trim for buyers who want a more premium cabin and upscale presentation.
• AT4X: The upgraded off-road trim for shoppers who want the AT4’s capability focus with an even more specialised setup.
• Denali Ultimate: The top trim and the best-value pick if you want the most complete feature set, including the 13.4-inch screen, wireless smartphone projection, 12-speaker Bose audio, standard MultiPro Tailgate, and the full suite of driver-assistance features.

What GMC Sierra 2500HD do most buyers choose?

The GMC Sierra 2500HD years with the most listings are 2024, 2025, and 2023.

These higher-volume years tend to be the most popular because they give you the broadest mix of availability, pricing, and trim choices. They also make it easier to compare similar trucks and find one that fits your budget and equipment needs.

What is the GMC Sierra 2500HD's resale value?

Most model years are down year over year, which creates better buying opportunities for used shoppers. The largest drops are concentrated in the newer and older ends of the range, while one model year has moved up slightly. The smallest changes are clustered in the middle of the lineup, where prices have been steadier.

The 2020, 2021, and 2019 model years have held their value best, with the smallest year-over-year price changes.

Is the GMC Sierra 2500HD safe?

• 2024: 9/10
• 2022: 8/10

The GMC Sierra HD comes standard with automatic emergency braking, forward collision warning, pedestrian detection, and lane departure warning, while the Denali Ultimate adds front and rear parking sensors, a surround-view parking camera, adaptive cruise control, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.

For the safest used buy, the 2024 model posts the highest confirmed score of 9/10.

Should I buy a used GMC Sierra 2500HD now or wait for the next model?

Buy now if:

• Price trend: The 2025 model is at −8.92% versus a year ago, and the 2024 model is at −6.54%.
• Deal availability: The 2025 model has 27.9% good and great deals, and the 2024 model has 28.7%.
• Sweet-spot year: The 2024 model has the most listings at a current average price of $77,504 CAD. The GMC Sierra 2500HD offers a massive cabin with luxury trimmings and strong towing capability.

Consider waiting if:

• Powertrain/efficiency: The 6.6-litre Duramax turbocharged diesel V8 produces 470 horsepower and 975 lb-ft of torque, and during long highway stints it dipped as low as 11.2 litres per 100 kilometres.
• Tech: The Denali Ultimate features a 13.4-inch screen, wireless Apple CarPlay and Android Auto, a wireless device charging pad, Google built-in, a 12-speaker Bose surround-sound audio system, and split-screen navigation.
• Safety: The latest model adds front and rear parking sensors, a surround-view parking camera, adaptive cruise control, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.
• Starting price: The 2024 GMC Sierra 2500 Denali Ultimate heavy-duty pickup truck has a base price of $125,630 CAD.

If you're buying used today, the 2024 model year offers the best mix of value and availability. If you want the latest tech and features, it may be worth waiting for the next model year's inventory to build up.

How does the 2021 GMC Sierra 2500HD compare to the 2021 Ford F-250 Super Duty?

Read our full side-by-side expert comparison here.

These recommendations are based on CarGurus' proprietary market data from October 21, 2026, CarGurus experts' opinions, and generative AI.