Used GMC Sierra 2500HD for Sale nearStamford, CT

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 $58,102, and its year-round low is $55,376.60. That puts the model's pricing in a fairly broad band depending on year and configuration, with newer trucks commanding the highest averages. 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 range.

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

Owners consistently praise its power, towing ability, and comfortable ride. They also highlight its upscale features and strong performance in demanding work, along with the truck’s smooth handling and overall comfort.

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

The main tradeoffs show up in fuel economy, pricing, and some reported quality or reliability concerns in certain years, especially around infotainment behavior, shifting, and electrical issues.

29.4% 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 coverage also points to strong performance and a refined feel in the better-equipped versions.

• 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 depends heavily on maintenance history and how carefully a specific truck has been inspected.

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

Across all model years, accident-free inventory is solid at 84.8% — 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: the HD Denali Ultimate includes 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: the HD Denali Ultimate features a 13.4-inch screen with wireless Apple CarPlay and Android Auto.

Which GMC Sierra 2500HD trim should I buy?

The 2024 GMC Sierra 2500HD offers these trims:

• Denali Ultimate: This is the best-value choice if you want the most complete luxury and tech package, with a 13.4-inch screen, wireless Apple CarPlay and Android Auto, a 15-inch head-up display, Google built-in, a 12-speaker Bose surround-sound audio system, and the MultiPro Tailgate. It also adds the Duramax turbocharged diesel V8, 10-speed Allison automatic transmission, standard four-wheel drive, and trailering hardware such as hitch guidance, a trailer-brake controller, and the ProGrade trailering system.
• Denali: This trim suits you if you want a premium heavy-duty truck with upscale cabin features and strong towing capability, while stepping down from the most feature-packed version.
• AT4X: This is the off-road-focused choice, adding skid plates, off-road suspension upgrades, and a more robust transfer case.
• AT4: This trim adds off-road hardware and accessories, making it a strong pick if you want a rugged setup.
• SLT: This is a well-equipped middle-ground trim for buyers who want comfort and convenience without moving all the way to the luxury end.
• SLE: This trim gives you a practical step up from the entry-level setup with useful everyday equipment.
• Pro: This is the entry point for buyers who want the Sierra HD’s core capability at the lowest rung of the lineup.

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 popular because they give you more inventory to compare, which can make it easier to find the right trim, mileage, and price. They also tend to attract shoppers looking for newer features and broader deal availability.

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

Most model years in the Sierra 2500HD lineup are showing lower prices than a year ago, which is good news if you’re shopping used. The declines vary, but several recent years have moved down noticeably, creating more room for value-minded buyers. A few older years have changed less, which suggests steadier pricing in those parts of the lineup.

The 2018, 2016, and 2020 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 HD Denali Ultimate comes 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.

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 −7.23% versus a year ago, and the 2024 model is at −7.16%.
• Deal availability: The 2025 model has 31.5% good and great deals, and the 2024 model has 31%.
• Sweet-spot year: The 2025 model has the most listings at a current average price of $73,130. 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 gas-fed V8 with a six-speed automatic or a 6.6-liter Duramax turbodiesel V8 with a 10-speed Allison automatic, and it can return as much as 21 miles per gallon on long highway stints while dipping into the single digits in suburban/city driving.
• 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 September 4, 2026, CarGurus experts' opinions, and generative AI.