New GMC Sierra 3500HD for Sale nearThorold, 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 $75,757 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 is a strong choice if you want heavy-duty capability with broad everyday appeal. The 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. They also highlight the comfortable ride and spacious interior, which help it work well as both a jobsite truck and a daily driver. Across the model range, the Sierra 3500HD also earns credit for its refined upper trims and practical cabin layout.

26.5% of listings are priced as good or great deals.

Are GMC Sierra 3500HD models reliable?

Owners consistently praise the Sierra 3500HD for its durable build quality, strong performance under load, and comfortable ride. Expert and owner feedback also points to a truck that feels well suited to demanding work while still delivering a polished experience in higher trims.

• 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 most by model-year condition, maintenance history, and how hard the truck has been worked.

What GMC Sierra 3500HD do most buyers choose?

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

These model years tend to draw the most attention because they combine strong availability with newer features and broad trim coverage. That gives you more choice across work-focused, comfort-focused, and higher-end versions.

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

Most model years in the table are moving lower year over year, which can create better buying opportunities for used shoppers. A few older years are rising or holding closer to flat, showing that demand remains steady for certain configurations. The sharpest drops are concentrated in the newer model years, while the older entries show smaller changes overall.

The 2015, 2018, and 2019 model years have held their value best, with the smallest year-over-year price changes.

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 −13.79% versus a year ago, and the 2024 model is at −3.83%.
• Deal availability: The 2025 model has 32.8% good and great deals, and the 2024 model has 27.1%.
• Sweet-spot year: The 2024 model has the most listings at a current average price of $81,889 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 October 13, 2026, CarGurus experts' opinions, and generative AI.