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 $57,044, and its nationwide average price reached a low of $55,348 over the past year.

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 strong marks from owners across the full model-year spread, especially for power, towing, and comfort.

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

Owners consistently praise the truck's strong performance, towing capability, and comfortable ride. They also highlight its upscale features and the way it balances work-ready strength with everyday usability.

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

The main tradeoffs center on fuel economy, pricing, and some quality concerns in certain model years.

33.4% of listings are priced as good or great deals.

Are GMC Sierra 2500HD models reliable?

Owners consistently praise the Sierra 2500HD for its power, towing strength, comfortable ride, and upscale features. Expert feedback also points to a truck that delivers serious capability with a polished feel.

• 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 worth checking carefully because some model years have reported electrical, transmission, infotainment, and build-quality concerns.

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

Across all model years, accident-free inventory is solid at 83.9% — 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: 2024 Denali Ultimate standard 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: 2024 Denali Ultimate with a 13.4-inch touchscreen, wireless Apple CarPlay and Android Auto, wireless device charging, 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: The top trim adds the most luxury-focused cabin, a 13.4-inch touchscreen, wireless Apple CarPlay and Android Auto, wireless charging, Google built-in, a 15-inch head-up display, a 12-speaker Bose surround-sound system, split-screen navigation, standard four-wheel drive, a diesel powertrain, and a full set of trailering and safety hardware. It suits you if you want the most premium version and the strongest feature content.
• Denali: This trim brings a luxury-oriented cabin and upscale presentation for buyers who want a premium heavy-duty truck without going all the way to the top-spec Denali Ultimate.
• AT4X: This trim adds off-road hardware and accessories, including skid plates, off-road suspension upgrades, and a more robust transfer case, for buyers who want a more trail-ready setup.
• AT4: This trim adds off-road hardware and accessories, including skid plates, off-road suspension upgrades, and a more robust transfer case, for buyers who want a more trail-ready setup.
• SLT: This trim gives you a strong mix of comfort and capability, making it a smart value choice for buyers who want a well-equipped heavy-duty truck.
• SLE: This trim covers the core Sierra HD experience with a practical feature set for work and everyday use.
• Pro: This entry trim focuses on the basics for buyers who want a straightforward heavy-duty truck.

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 draw the most attention because they give you the broadest selection of trims, prices, and configurations. They also sit close enough to the newest model years to keep feature content and availability strong.

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

Most model years are down year over year, which creates more room for used buyers to find value. The largest drops are concentrated in the newer and mid-cycle years, while the older years show smaller declines. That pattern suggests the Sierra 2500HD is still adjusting in price across much of the lineup, with some years softening more quickly than others.

The 2019, 2020, and 2018 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 broad suite of active safety features, including 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 −9.01% versus a year ago, and the 2024 model is at −7.94%.
• Deal availability: The 2025 model has 35.9% good and great deals, and the 2024 model has 35.9%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $71,175. The GMC Sierra 2500HD offers a broad range of trims and a more upscale feel than many rivals.

Consider waiting if:

• Powertrain/efficiency: The latest model pairs a 6.6-liter gas V8 with a six-speed automatic or a 6.6-liter Duramax turbodiesel V8 with a 10-speed Allison automatic, and the diesel setup produces 470 horsepower and 975 pound-feet of torque.
• Tech: The latest model adds a 13.4-inch touchscreen, wireless Apple CarPlay and Android Auto, wireless device charging, Google built-in, a 15-inch head-up display, 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: The latest model has a base price of $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 the next model year's inventory to build up.

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