Used GMC Sierra 2500HD for Sale nearLongmont, CO

How much does the GMC Sierra 2500HD cost in today's market?

Used GMC Sierra 2500HD prices span a wide range depending on model year. Here's what the market looks like right now:

The GMC Sierra 2500HD's current nationwide average price is $58,275, and its year-round low is $55,374.28. That puts the model in a broad pricing band across generations, with newer trucks commanding the highest averages and older ones opening up lower entry points. Recently, prices have come down for the 2023, 2024, and 2025 models, making now a good time to shop recent model years.

Is the GMC Sierra 2500HD a good car?

Yes — the GMC Sierra 2500HD earns a strong all-generations owner rating of 4.49/5.

The all-generations owner rating is 4.49/5 across every model year in the data.

Owners consistently praise its power, towing capability, and comfortable ride. They also tend to highlight its luxurious features and strong performance, especially when the truck is used for demanding work or long-haul driving. Across the model line, the Sierra 2500HD’s upscale presentation and capability are recurring strengths.

Expert reviews rate the 2020 and 2024 models among the highest across all years.

The main tradeoffs called out in expert reviews are fuel use, parking-lot bulk, and pricing, especially on higher trims. Some years also bring reported infotainment, shifting, and build-quality concerns, so a careful inspection and test drive matter.

26.9% of listings are priced as good or great deals.

Are GMC Sierra 2500HD models reliable?

Owners and experts consistently praise the Sierra 2500HD for its strong power, towing ability, and comfortable ride. The truck also earns repeat praise for its upscale features and overall capability, which helps explain its strong owner ratings across the model line.

• Owners rate the GMC Sierra 2500HD between 3.5 and 5.0 out of 5 stars across all model years in the data.

For used buyers, long-term ownership risk is best managed by checking maintenance records and confirming that the truck has been inspected carefully, especially on older examples.

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

Across all model years, accident-free inventory is solid at 84.5% — always verify the vehicle history report.

Older model years carry meaningfully higher accident rates, so always verify the vehicle history report on pre-2021 models.

Key things to evaluate:

• Safety package: GMC’s driver-assistance suite with automatic emergency braking, forward collision warning, lane departure warning, front and rear parking sensors, a surround-view parking camera, pedestrian detection, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.
• Infotainment: a 13.4-inch touchscreen with wireless Apple CarPlay and Android Auto, plus Google built-in and split-screen navigation.

Which GMC Sierra 2500HD trim should I buy?

The 2024 GMC Sierra 2500HD offers these trims:

• Denali Ultimate: Best for you if you want the most luxurious setup, with the 13.4-inch screen, wireless Apple CarPlay and Android Auto, a 15-inch head-up display, and the most complete trailering and safety equipment.
• Denali: A strong upscale choice if you want premium cabin features and a high-end heavy-duty feel without going all the way to the top trim.
• AT4X: The off-road-focused choice, adding skid plates, off-road suspension upgrades, and a more robust transfer case.
• AT4: A good pick if you want off-road hardware and a more rugged setup while staying below the luxury trims.
• SLT: A well-rounded value trim for buyers who want a strong mix of comfort and equipment.
• SLE: A practical middle-ground trim that gives you useful equipment without moving into the highest-priced versions.
• Pro: The entry point if you want the Sierra 2500HD’s core capability in its most straightforward form.

What GMC Sierra 2500HD do most buyers choose?

The GMC Sierra 2500HD years with the most listings are 2025, 2024, and 2023.

These higher-volume years tend to be the most popular used picks because they offer the broadest selection of listings and a strong mix of recent features. That gives you more room to compare trims, prices, and condition before you buy.

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

Most model years are down year over year, which is good news if you’re shopping used and want to buy after prices have softened. The biggest drops are concentrated in the newer and mid-cycle years, while a few older years have moved down more modestly. That creates a wide spread of opportunities depending on how new you want your truck to be.

The 2018, 2021, and 2016 model years have held their value best, with the smallest year-over-year price changes.

Is the GMC Sierra 2500HD safe?

• 2024: 9/10
• 2022: 8/10
• 2020: 8/10

The 2024 model includes a driver-assistance suite with automatic emergency braking, forward collision warning, lane departure warning, front and rear parking sensors, a surround-view parking camera, pedestrian detection, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.

For the safest used buy, the 2024 model posts the highest confirmed score of 9/10.

Should I buy a used GMC Sierra 2500HD now or wait for the next model?

Buy now if:

• Price trend: The 2025 model is at −7.05% versus a year ago, and the 2024 model is at −7.16%.
• Deal availability: The 2025 model has 29.2% good and great deals, and the 2024 model has 29.1%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $73,508. The GMC Sierra 2500HD offers a strong mix of upscale presentation and heavy-duty capability.

Consider waiting if:

• Powertrain/efficiency: The latest model pairs a 6.6-liter Duramax turbocharged diesel V8 with 470 horsepower and 975 pound-feet of torque, plus a 10-speed Allison automatic transmission and standard four-wheel drive.
• Tech: The latest model adds a 13.4-inch screen, a 15-inch multi-color head-up display, wireless Apple CarPlay and Android Auto, wireless device charging, Google built-in, and split-screen navigation.
• Safety: The latest model adds automatic emergency braking, forward collision warning, lane departure warning, front and rear parking sensors, a surround-view parking camera, pedestrian detection, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera.
• Starting price: $92,940

If you're buying used today, the 2025 model year offers the best mix of value and availability. If you want the latest tech and features, it may be worth waiting for 2027 inventory to mature.

These recommendations are based on CarGurus' proprietary market data from August 28, 2026, CarGurus experts' opinions, and generative AI.