Used 2020 GMC Sierra 2500HD for Sale nearColumbus, OH

How much does the 2020 GMC Sierra 2500HD cost?

Prices have softened 5.32% compared to this time last year, making it a favorable time to shop this model year.

There are 1,286 listings available, which gives you a solid pool of trucks to compare.

Is the 2020 GMC Sierra 2500HD a good car?

Yes — with a 4.86/5 user rating and an 8.17/10 expert rating, this truck lands strongly with both owners and our test drive team. The standout strength is Form and function at 10/10.

Owners consistently praise its performance, comfort, towing capabilities, and power, and they also highlight its appealing features. The Sierra 2500HD fits you well if you want a heavy-duty truck that can handle serious work while still delivering an upscale Denali feel and plenty of cargo space.

The trade-offs are clear: fit and finish do not fully meet luxury-truck expectations, and the truck is called poor value for money. Even so, 32.3% of listings are priced as good or great deals, which gives you some room to shop selectively.

Is the 2020 GMC Sierra 2500HD reliable?

Owners rate it 4.86/5, a strong signal of long-term satisfaction.

The owner feedback points to a truck that feels dependable, with repeated praise for performance, comfort, towing capability, and power. That kind of feedback suggests you can count on it for demanding use, especially if you want a heavy-duty truck that still feels refined enough for regular driving.

The expert drive notes also emphasize that the truck is built around serious capability and that the diesel setup delivers massive, confidence-inspiring torque. If you buy used, your biggest long-term ownership risk is less about the truck’s core strength and more about finding one that has been maintained well and not overworked.

What should I look for when buying a used 2020 GMC Sierra 2500HD?

At 73.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle-history report and then prioritize a thorough inspection of the truck’s body, frame, and undercarriage. Because this is a large heavy-duty pickup, condition matters a lot: look closely at signs of hard use, parking damage, and wear from towing or hauling.

Pay extra attention to how the truck drives at low speeds and in tight spaces, since its size and turning radius can make maneuvering challenging. If you’re shopping a Denali, make sure the premium equipment still works as intended and that the truck’s condition matches its upscale asking price.

Key things to evaluate:

• Trim level: The base Sierra comes standard with a V8 engine and a 7-inch touchscreen with Apple CarPlay and Android Auto, but frills are minimal. The SLE adds 17-inch aluminum wheels, trailering mirrors, an upgraded driver-information screen, Wi-Fi hotspot capability, cruise control, remote keyless entry, and a leather-wrapped steering wheel. The SLT adds 18-inch wheels, LED bed lighting, LED fog lights, chrome accents, power-adjustable front seats, power outlets, the upgraded 8-inch infotainment touchscreen, and the Multi-Pro six-way tailgate. The Denali adds a full leather interior, wood-grain inserts, navigation, wireless device charging, and a Bose premium sound system. The best-value trim is the SLT if you want a strong mix of upscale features without jumping all the way to Denali pricing.

• Powertrain: The truck offers two 6.6-liter V8 options: a gas engine with 401 horsepower and 464 pound-feet of torque, and a Duramax diesel with 445 hp and 910 lb-ft. The gas engine uses a 6-speed automatic, while the diesel uses a 10-speed Allison transmission. The diesel delivers enormous low-speed torque, while the gas engine is the simpler and less expensive route.

• Safety package: Standard safety equipment includes front- and side-impact airbags, traction control, a reversing camera, and a tire pressure monitoring system. The Driver Alert Package I adds front and rear parking sensors, blind-spot monitoring, and rear cross-traffic alert. The Driver Alert Package II adds forward-collision avoidance, lane-departure warning, and automatic high beams.

• Infotainment: The standard setup is a 7-inch touchscreen running GMC Infotainment 3 with Apple CarPlay and Android Auto through USB. The SLT and Denali upgrade to an 8-inch screen, and both are available with navigation. The Denali also adds an 8-inch color driver-information screen in the instrument panel.

• Fuel efficiency: In mixed driving, the truck returned an observed average of 16.5 miles per gallon.

Which 2020 GMC Sierra 2500HD trim should I buy?

The 2020 GMC Sierra 2500HD is offered in 4 trim levels: Sierra, SLE, SLT, Denali.

Here's the short version:

• Sierra: This is the entry point, and it gives you the core heavy-duty hardware plus a V8 engine and a 7-inch touchscreen with Apple CarPlay and Android Auto. It makes sense if you want the lowest starting point and plan to keep the truck focused on work rather than comfort.

• SLE: This trim adds a much more usable mix of convenience and capability, including trailering mirrors, a better driver-information display, Wi-Fi hotspot capability, cruise control, remote keyless entry, and a leather-wrapped steering wheel. It is the trim that most clearly broadens the truck’s everyday usefulness without pushing into luxury pricing.

• SLT: This is the best-value trim for many shoppers because it adds a stronger upscale feel with 18-inch wheels, LED lighting, chrome accents, power-adjustable front seats, power outlets, the larger 8-inch infotainment screen, and the Multi-Pro six-way tailgate. If you want a well-equipped truck that still feels rational, this is the sweet spot.

• Denali: This is the luxury choice, with a full leather interior, wood-grain trim, navigation, wireless charging, and a Bose premium sound system. Choose it if you want the most premium cabin and are willing to pay for it, but keep in mind that the cabin still falls short of true luxury-truck expectations.

The safety package note to keep in mind is that Driver Alert Package I adds parking sensors, blind-spot monitoring, and rear cross-traffic alert, while Driver Alert Package II adds forward-collision avoidance, lane-departure warning, and automatic high beams.

Is now a good time to buy a used 2020 GMC Sierra 2500HD?

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

• Deal availability: 32.3% of listings are priced as good or great deals.
• Inventory: There are 1,286 listings available.
• Price trend: Prices have softened 5.32% compared with last year.
• Clean inventory: 73.7% of listings are accident-free.

If you find a listing below $48,419, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 GMC Sierra 2500HD's resale value?

The current average of $48,419 sits slightly below last year's $51,140.

That price movement suggests the market has cooled a bit, which can help you buy more selectively now. For a future seller, it also means you should expect resale value to depend heavily on condition, mileage, and equipment rather than assuming the truck will hold its value unchanged.

Because this is a heavy-duty truck with strong capability and premium appeal, well-kept examples should continue to attract interest from buyers who want both work-ready strength and upscale features. Trucks with strong owner satisfaction ratings, like this model year's 4.86/5, tend to retain buyer demand, which supports resale value over time.

Is the 2020 GMC Sierra 2500HD safe?

The 2020 GMC Sierra 2500HD earns an 8/10 safety score from our experts.

Standard safety features include a full array of front- and side-impact airbags, traction control, a reversing camera, and a tire pressure monitoring system. The Driver Alert Package I adds front and rear parking sensors, blind-spot monitoring, and rear cross-traffic alert, while Driver Alert Package II adds forward-collision avoidance, lane-departure warning, and automatic high beams.

Its size and turning radius are the main safety caveats, especially in tight spaces. The available cameras on all four sides and the helpful trailering mirrors go a long way toward reducing stress, but you still need to stay alert when maneuvering this truck.

Should I buy a 2020 GMC Sierra 2500HD 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:

• 32.3% of listings are priced as good or great deals.
• At 73.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 5.32% compared with last year.
• Owners rate it 4.86/5 — a strong satisfaction signal.
• The 2020 Sierra 2500HD stands out for its Denali appeal, strong capability, and upscale feature set, even if its cabin materials and value proposition are not class-leading.

The bottom line: If you want this generation’s blend of heavy-duty strength and premium features, the 2020 is a sensible year to target because pricing has eased and inventory is healthy. If you’re especially price-sensitive, you can shop aggressively for a well-kept example with the right trim and equipment, but you should be selective about condition and history.

These recommendations are based on CarGurus' proprietary market data from October 20, 2026, CarGurus experts' opinions, and generative AI.