Used 2024 GMC Sierra 2500HD for Sale nearDenver, CO

How much does the 2024 GMC Sierra 2500HD cost?

Prices have softened 7.56% compared to this time last year, making it a favorable time to shop this model year.

There are 4,470 listings available, which suggests solid inventory for shoppers comparing trims and equipment.

Is the 2024 GMC Sierra 2500HD a good car?

Generally — 4.2/5 from owners, with an expert rating of 8/10. The model scores 9/10 across Technology and Safety.

Owners consistently praise its capability, impressive features, and professional-grade feel, and they also value the truck’s overall utility. The main trade-offs are its fuel thirst and the near-twin Chevrolet Silverado HD being cheaper. In practical terms, this makes the Sierra 2500HD especially appealing if you want a heavy-duty truck that feels upscale and is built for serious towing rather than light-duty errands. Good and great deals account for 37.9% of listings, which gives you some room to shop selectively.

Is the 2024 GMC Sierra 2500HD reliable?

Owners rate it 4.2/5, a solid signal of long-term satisfaction.

Owner feedback points to a truck that feels dependable in day-to-day use and capable over the long haul, with buyers appreciating its professional-grade character and value. The expert drive data also emphasizes refinement in the powertrain and a transmission that stays composed without hunting for gears. The first scheduled maintenance visit is on the house, which helps lower early ownership friction. For used buyers, the main long-term risk is that heavy-duty diesel ownership can become expensive if prior maintenance was neglected or the truck was worked hard.

What should I look for when buying a used 2024 GMC Sierra 2500HD?

Accident-free inventory is excellent at 92.2% — clean inventory, standard diligence applies.

You should still run a history report and verify that the truck’s towing and trailering equipment has been used and maintained properly. A pre-purchase inspection matters most on a heavy-duty truck like this, especially if you plan to tow regularly or want to avoid surprises in the suspension, brakes, or drivetrain. Focus on overall condition, signs of hard use, and whether the truck’s luxury and tech features are functioning as intended.

Key things to evaluate:

• Trim level: The Denali Ultimate brings the most upscale cabin treatment, standard LED headlights and taillights, sequential turn signals, the MultiPro Tailgate, and a six-passenger Crew Cab layout, while lesser trims make do with fewer luxury touches and a smaller standard touchscreen.
• Powertrain: The Denali Ultimate uses a 6.6-liter Duramax turbocharged diesel V8 with 470 horsepower and 975 pound-feet of torque, paired with a 10-speed Allison automatic transmission and standard four-wheel drive.
• Safety package: Standard equipment 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 Denali Ultimate gets a 13.4-inch screen, wireless Apple CarPlay and Android Auto, Google built-in, wireless device charging, a 15-inch head-up display, and a 12-speaker Bose audio system.
• Fuel efficiency: During long highway stints, the diesel returned as much as 21 miles per gallon, while suburban and city driving could dip into the single digits.

Which 2024 GMC Sierra 2500HD trim should I buy?

The 2024 GMC Sierra 2500HD is offered in 1 trim level: Denali Ultimate.

Here's the short version:

Denali Ultimate: This is the top-spec choice and the one to buy if you want the most luxurious version of the Sierra HD with the strongest feature content. It stands out for its massive cabin, diesel towing strength, strong acceleration, and extensive trailering tech, including multiple camera views and trailer-assist features. It suits you best if you want a heavy-duty truck that feels as premium as possible and you’re willing to pay for it. The safety package is comprehensive and standard on this trim.

Is now a good time to buy a used 2024 GMC Sierra 2500HD?

This looks like a moderate, selective buyer’s market, so you can shop carefully without expecting every listing to be a bargain.

• Deal availability: 37.9% of listings are priced as good or great deals.
• Inventory: There are 4,470 listings available.
• Price trend: Prices have softened 7.56% compared with last year.
• Clean inventory: 92.2% of listings are accident-free.

If you find a listing below $65,955, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2024 GMC Sierra 2500HD's resale value?

The current average of $65,955 sits slightly below last year's $71,345.

That price movement suggests the market has cooled enough to give used buyers more leverage today than a year ago. If you buy well now, you may have a better chance of limiting depreciation pressure compared with someone who paid closer to last year’s average. The truck’s strong capability and premium positioning should still help support demand, especially for well-equipped examples in good condition. Vehicles with solid owner satisfaction ratings, like this model year's 4.2/5, tend to retain buyer demand, which supports resale value over time.

Is the 2024 GMC Sierra 2500HD safe?

The 2024 GMC Sierra 2500HD earns a 9/10 safety score from our experts.

It 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. The extra-large power-operated side mirrors also improve visibility along the sides and rearward. For a heavy-duty truck, that’s a strong standard safety package, especially if you plan to tow or maneuver in tight spaces.

Should I buy a 2024 GMC Sierra 2500HD or consider a different year?

If you're weighing the 2024 against nearby model years, here's how to think about it:

Choose the 2024 if:

• 37.9% of listings are priced as good or great deals.
• Accident-free inventory is excellent at 92.2% — clean inventory, standard diligence applies.
• Price trend: Prices have softened 7.56% compared with last year.
• Owners rate it 4.2/5 — a solid satisfaction signal.
• The 2024 model year adds the Denali Ultimate at the top of the lineup, bringing a newly added luxury-focused trim with extensive equipment and strong towing capability.

The bottom line: If you want the newest version with the most upscale trim and strong market availability, the 2024 is the right path. If your priority is stretching your budget further, a nearby model year may offer a lower entry price, but you’ll want to compare equipment carefully because the 2024’s top trim and feature set are a major part of its appeal.

These recommendations are based on CarGurus' proprietary market data from October 6, 2026, CarGurus experts' opinions, and generative AI.