Used 2021 GMC Yukon for SaleNationwide

How much does the 2021 GMC Yukon cost?

Prices have softened 16.99% compared to this time last year, making it a favourable time to shop this model year.

There are 73 listings available, which gives you a modest amount of inventory to compare.

Is the 2021 GMC Yukon a good car?

Yes — the 2021 GMC Yukon earns a 5/5 user rating and a 7.67/10 expert rating. The model scores 9/10 across Look and feel, Technology, and Safety.

Owners consistently praise the luxurious feel, spacious interior, and impressive tech features. The ride is also described as extremely comfortable, and many shoppers see it as standing out in its class. That lines up well with the Yukon’s role as a roomy, comfortable, well-equipped full-size SUV for buyers who want substance over flash.

With 38.4% of listings priced as good or great deals, you still have some room to shop selectively.

Is the 2021 GMC Yukon reliable?

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

The owner feedback points to a dependable, trouble-free ownership experience, with people especially appreciating the Yukon’s comfort, space, and technology over time. The expert review also reinforces that this is a vehicle built for substantial family-hauling use, with a strong emphasis on comfort and capability.

If you’re buying used, the main long-term risk is that a large, feature-rich SUV can be costly to keep in top shape if prior maintenance was neglected.

What should I look for when buying a used 2021 GMC Yukon?

Key things to evaluate:

• Trim level: The SLE, SLT, AT4, and Denali each bring a different mix of equipment, with the Denali standing out for its more upscale cabin design, real wood trim, leather-wrapped panels, unique stitching and piping, and exclusive dashboard. The AT4 is the off-road-focused choice with improved approach angle, skid plates, and all-terrain tires. The SLT is the first trim to add blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance, while Denali adds rear pedestrian alert, adaptive cruise control, and enhanced automatic emergency braking.
• Powertrain: You get a standard 355-horsepower 5.3-litre V8 on all but the Denali, a standard and exclusive 420-horsepower 6.2-litre V8 on the Denali, and an optional 3.0-litre inline six-cylinder turbo-diesel on every Yukon except the AT4. The 6.2-litre V8 delivers strong acceleration, but it is not the Yukon’s efficiency highlight.
• Safety package: Standard safety equipment includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver technology, a rear-seat reminder system, and automatic crash response and crisis assistance through an active OnStar subscription. Starting with SLT, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. Denali is required for adaptive cruise control and enhanced automatic emergency braking at higher speeds.
• Infotainment: All 2021 Yukons get a 10.2-inch touchscreen with wireless Apple CarPlay, wireless Android Auto, and over-the-air updates. Available upgrades include wireless device charging, navigation, a 14-speaker Bose Performance Series premium audio system, and a rear-seat media system with dual 12.6-inch touchscreen displays.
• Fuel efficiency: The 6.2-litre V8 with 4WD is rated at 16.8 L/100 km in the city, 12.4 on the highway, and 14.8 combined. In testing, it returned 16.3 L/100 km on one loop and 14.5 L/100 km on another. The review also notes that fuel efficiency is not this engine’s strong suit.

Which 2021 GMC Yukon trim should I buy?

The 2021 GMC Yukon is offered in 4 trim levels: SLE, SLT, AT4, and Denali.

Here's the short version:

• SLE: This is the entry point if you want the Yukon’s space, standard 10.2-inch touchscreen, wireless Apple CarPlay and Android Auto, and core safety tech without paying for the higher-end luxury or driver-assistance upgrades. It makes sense if you want the Yukon experience at the lowest starting point.
• SLT: This is the best-value trim for many shoppers because it adds blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. If you want a more complete safety package without jumping all the way to Denali, this is the trim to focus on.
• AT4: Choose this if you want the Yukon’s off-road-oriented character. It adds improved approach angle, skid plates, and all-terrain tires, making it the clear pick for buyers who want a more adventurous setup.
• Denali: This is the luxury choice, with the exclusive 6.2-litre V8, upscale interior design, rear pedestrian alert, adaptive cruise control, and enhanced automatic emergency braking. It suits you best if you want the most premium Yukon and are willing to pay for it.

The safety-package gap to remember is that adaptive cruise control and enhanced automatic emergency braking are reserved for Denali.

Is now a good time to buy a used 2021 GMC Yukon?

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

• Deal availability: 38.4% of listings are priced as good or great deals.
• Inventory: There are 73 listings available.
• Price trend: Prices have softened 16.99% compared with last year.

If you find a listing below $53,875 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 GMC Yukon's resale value?

The current average of $53,875 CAD sits slightly below last year's $64,902 CAD.

That price movement suggests the market has already adjusted downward, which can help future buyers but may pressure resale values for current owners. If you buy at today’s average, you may have less room for appreciation than owners who bought before the recent softening. On the other hand, a lower entry price can make the Yukon easier to move later if demand stays steady for roomy, well-equipped full-size SUVs.

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

Is the 2021 GMC Yukon safe?

The 2021 GMC Yukon earns a 9/10 safety score from our experts.

Standard safety features include forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver parental report card technology, a rear-seat reminder system, and automatic crash response and crisis assistance through an active OnStar subscription. Starting with SLT trim, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. Rear pedestrian alert is available on SLT and AT4 and comes standard on Denali, while Denali also adds adaptive cruise control and enhanced automatic emergency braking at higher speeds.

Should I buy a 2021 GMC Yukon or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 38.4% of listings are priced as good or great deals.
• Price trend: Prices have softened 16.99% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.
• The 2021 brings a redesigned body, more space, improved ride quality, and a major technology upgrade.

Consider the 2022 if:

• At $63,387 CAD, the 2022 costs more than the current year's $53,875 CAD average.
• It adds a standard 12-inch driver information centre and enhanced connectivity.

The bottom line: The 2021 is the better value if you want the redesigned Yukon’s space, comfort, and tech at a lower price. If you can stretch your budget and want the newer-year upgrades, the 2022 is the cleaner choice; otherwise, the 2021 is the smarter buy for price-sensitive shoppers.

These recommendations are based on CarGurus' proprietary market data from October 13, 2026, CarGurus experts' opinions, and generative AI.