Used 2025 GMC Sierra 3500HD for Sale nearBrockville, ON

How much does the 2025 GMC Sierra 3500HD cost?

Prices have softened 14.12% compared to this time last year, making it a favourable time to shop this model year.

There are 185 listings available, which gives you a solid amount of inventory to compare.

Is the 2025 GMC Sierra 3500HD a good car?

Yes — the 2025 GMC Sierra 3500HD earns a 5/5 user rating, which points to strong owner satisfaction. It stands out as a heavy-duty truck that blends serious work capability with a more polished feel than you might expect from a one-ton hauler, and it gives you a wide range of cab, bed, and rear-axle configurations to match different jobs. You also get a clear choice between gasoline power and diesel muscle, plus a long list of available convenience and technology features that help it feel more upscale than a basic work truck.

With 30.8% of listings marked as good or great deals, you have a meaningful number of attractive options to consider.

Is the 2025 GMC Sierra 3500HD reliable?

Owners rate it 5/5, a strong signal of long-term satisfaction.

The 2025 GMC Sierra 3500HD is presented as a truck built around serious capability, with a broad trim range and a strong emphasis on towing and hauling. Its appeal also comes from the way it combines heavy-duty strength with available refinement, which can make day-to-day ownership feel more satisfying if you want a truck that does more than just work.

For used buyers, the main long-term ownership risk is that a truck this large and capable can be costly to keep if it has been used hard for towing, hauling, or frequent stop-and-go driving.

Is now a good time to buy a used 2025 GMC Sierra 3500HD?

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile listings.

• Deal availability: 30.8% of listings are priced as good or great deals.
• Inventory: There are 185 listings available.
• Price trend: Prices have softened 14.12% compared with last year.

If you find a listing below $90,558 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2025 GMC Sierra 3500HD's resale value?

The current average of $91,499 CAD sits slightly below last year's $106,547 CAD.

That price movement suggests the market has already adjusted downward, which can help you buy with less risk of immediate overpaying. For a future seller, it also means resale value may be more sensitive to condition, mileage, and equipment level than it would be in a stronger pricing environment. Well-equipped trucks with desirable towing features and cleaner histories should still draw attention, but you should expect buyers to be selective.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2025 GMC Sierra 3500HD or consider a different year?

If you're weighing the 2025 against nearby model years, here's how to think about it:

Choose the 2025 if:

• 30.8% of listings are priced as good or great deals.
• Price trend: Prices have softened 14.12% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: If you want the strongest mix of current pricing, owner satisfaction, and heavy-duty capability, the 2025 is the primary year to target. If you are especially price-sensitive, you may want to compare nearby model years for a lower entry point, but the 2025 already shows meaningful softness in the market.

How does the 2025 GMC Sierra 3500HD compare to the 2025 Ford F-350 Super Duty?

These recommendations are based on CarGurus' proprietary market data from October 27, 2026, CarGurus experts' opinions, and generative AI.