New GMC Sierra 3500HD for Sale near Cookstown, ON

How much does the GMC Sierra 3500HD cost in today's market?

Used GMC Sierra 3500HD prices span a wide range depending on model year. Here's what the market looks like right now:

The GMC Sierra 3500HD's current nationwide average price is $75,463 CAD, and its lowest point over the past year was $71,468 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 3500HD a good car?

Yes — the GMC Sierra 3500HD earns strong marks from owners across its model years, and its all-generations owner rating is 4.62/5 across every model year in the data.

Owners consistently praise its towing strength, powerful performance, and durable build quality. Many also highlight the comfortable ride and spacious interior, which help it work well for both job-site duty and everyday driving. 29.0% of listings are priced as good or great deals.

Are GMC Sierra 3500HD models reliable?

Owners consistently describe the GMC Sierra 3500HD as a tough, capable heavy-duty truck with strong towing performance and a solid-feeling build. The strongest owner feedback also points to comfort and usefulness, especially when you want a truck that can handle demanding work and still feel composed on the road.

• Owners rate the GMC Sierra 3500HD between 3.0 and 5.0 out of 5 stars across all model years in the data.

For used buyers, long-term ownership risk is shaped mainly by how hard the truck has been worked and how well it has been maintained.

What GMC Sierra 3500HD do most buyers choose?

The GMC Sierra 3500HD years with the most listings are 2024, 2025, and 2023.

These higher-volume years tend to attract the most shoppers because they offer the broadest mix of availability, pricing, and newer features. They also give you more choice across trims and configurations, which makes it easier to find a truck that fits your needs.

What is the GMC Sierra 3500HD's resale value?

Most model years in the table are down year over year, which creates better buying opportunities for used shoppers. A few older years are moving higher, showing that demand remains strong for certain versions. The 2016, 2018, and 2019 model years have held their value best, with prices flat to rising year-over-year.

Should I buy a used GMC Sierra 3500HD now or wait for the next model?

Buy now if:

• Price trend: The 2025 model is at −16.06% versus a year ago, and the 2024 model is at −6.37%.
• Deal availability: The 2025 model has 34.1% good and great deals, and the 2024 model has 25.6%.
• Sweet-spot year: The 2024 model has the most listings at a current average price of $82,113 CAD.

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

These recommendations are based on CarGurus' proprietary market data from September 11, 2026, CarGurus experts' opinions, and generative AI.