Used 2020 GMC Sierra 1500 for Sale nearWindsor, ON

How much does the 2020 GMC Sierra 1500 cost?

Prices have softened 14.54% compared to this time last year, making it a favourable time to shop this model year.

There are 536 listings available, which gives you a solid amount of inventory to compare before you buy.

Is the 2020 GMC Sierra 1500 a good car?

Generally — the 2020 GMC Sierra 1500 earns a 4.3/5 user rating, which points to strong owner satisfaction. Owners commonly praise the spacious interior, advanced technology, and strong performance, and many also like the smooth ride and broad range of options. That makes it a good fit if you want a full-size pickup that can work as a daily driver while still offering a more polished, near-luxury feel. With 36.6% of listings marked as good or great deals, you still have room to shop selectively.

Is the 2020 GMC Sierra 1500 reliable?

Owners rate it 4.3/5, a solid signal of long-term satisfaction.

The owner feedback also points to a truck that many people find reliable and dependable over time, with plenty of praise for ownership confidence and day-to-day usability. Some drivers did mention engine-related concerns, including oil burning and recalls, so you should still inspect service history carefully. For used buyers, that means the long-term ownership risk looks manageable, but a thorough pre-purchase check is still important.

Is now a good time to buy a used 2020 GMC Sierra 1500?

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

• Deal availability: 36.6% of listings are priced as good or great deals.
• Inventory: There are 536 listings available.
• Price trend: Prices have softened 14.54% compared with last year.

If you find a listing below $36,168 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Sierra 1500's resale value?

The current average of $36,584 CAD sits slightly below last year's $42,807 CAD.

That price movement suggests the market has cooled, which can help you buy more affordably now but may also limit upside if you plan to resell soon. If you purchase at today’s average, your future resale value will depend heavily on condition, mileage, and trim. Well-kept examples should still attract interest because the Sierra’s upscale image and broad appeal remain part of its draw.

Vehicles with solid owner satisfaction ratings, like this model year's 4.3/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2020 GMC Sierra 1500 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:

• 36.6% of listings are priced as good or great deals.
• Price trend: Prices have softened 14.54% compared with last year.
• Owners rate it 4.3/5 — a solid satisfaction signal.

Consider the 2021 if:

• At $38,293 CAD, the 2021 costs more than the current year's $36,584 CAD average.
• It adds a carbon-fibre composite cargo bed for extra utility.

The bottom line: Choose the 2020 if you want the better value and are comfortable shopping carefully within a broad used-truck market. Consider the 2021 if you want to spend more for a newer model year and a few extra features, but price-sensitive buyers will likely find the 2020 the smarter buy.

How does the 2020 GMC Sierra 1500 compare to the 2020 Ford F-150?

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

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