Used 2020 GMC Sierra 3500HD for Sale nearKelowna, BC

How much does the 2020 GMC Sierra 3500HD cost?

Prices have held steady compared to this time last year, signaling a stable and predictable market for this model year.

There are 69 listings available, which gives you a modest amount of choice without an overwhelming amount of inventory.

Is the 2020 GMC Sierra 3500HD a good car?

Yes — it earns a 5/5 user rating, which points to strong owner satisfaction. Owners consistently praise its impressive performance when pulling heavy loads, along with its comfortable, well-built feel. The truck’s broad range of cab, bed, axle, and trim combinations also makes it easy to match to hard work or a more upscale use case. With 20.3% of listings marked as good or great deals, you still have some room to shop selectively.

Is the 2020 GMC Sierra 3500HD reliable?

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

The owner feedback points to a truck that feels dependable in demanding use, especially when you need serious towing and hauling capability. That kind of confidence matters for a heavy-duty pickup, where long-term ownership often depends on whether the truck can keep doing hard work without drama. For used buyers, the main risk is less about day-to-day satisfaction and more about making sure the specific truck has been maintained properly for the kind of load it was built to handle.

Is now a good time to buy a used 2020 GMC Sierra 3500HD?

This looks like a moderate, selective buyer’s market, so you can shop patiently but should move quickly when a strong listing appears.

• Deal availability: 20.3% of listings are priced as good or great deals.
• Inventory: There are 69 listings available.
• Price trend: Prices have held steady compared with last year.

If you find a listing below $57,208 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Sierra 3500HD's resale value?

The current average of $62,499 CAD sits slightly below last year's $62,638 CAD.

That small decline suggests the market has been fairly stable, which is helpful if you plan to resell later. You are not looking at a truck that has been sliding sharply in value, so ownership costs should feel more predictable than in a faster-moving market. Strong demand for heavy-duty trucks can also help support pricing when the truck is well equipped and properly maintained.

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 2020 GMC Sierra 3500HD or consider a different year?

If you're weighing the 2020 against nearby model years, here's how to think about it:

Choose the 2020 if:

• 20.3% of listings are priced as good or great deals.
• Price trend: Prices have held steady compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

The bottom line: If you want the first year of this generation with strong owner approval and a stable price profile, the 2020 is a sensible primary choice. If you are especially price-sensitive, it is worth comparing nearby years to see whether a lower asking price outweighs the 2020’s stronger market position and owner satisfaction.

How does the 2020 GMC Sierra 3500HD compare to the 2020 Ford F-350 Super Duty?

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.