Used 2024 GMC Sierra 2500HD for Sale nearFredericton, NB

How much does the 2024 GMC Sierra 2500HD cost?

Prices have softened 7.75% compared to this time last year, making it a favourable time to shop this model year.

There are 184 listings available, which gives you a modest amount of choice in the used market.

Is the 2024 GMC Sierra 2500HD a good car?

Generally — the 2024 GMC Sierra 2500HD earns 4.2/5 from owners and 8/10 from our experts. The model scores 9/10 across Technology and Safety.

Owners consistently praise its professional-grade feel, impressive capability, and strong feature content. The heavy-duty setup suits you best if you want maximum towing strength and a more luxurious cabin than a typical work truck provides. Trade-offs include a thirst for fuel and a size that can feel cumbersome when parking. With 31.0% of listings marked as good or great deals, there is still 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.

The owner summary points to a truck that feels capable and well-liked, with buyers appreciating its professional-grade character and value. It also highlights reliability concerns around the gas engine, especially carbon buildup issues over time. The diesel powertrain is described as refined and strong, which supports confidence in day-to-day use when properly maintained.

For used buyers, the main long-term ownership risk is that heavy-duty trucks can be expensive to keep in top shape, so a careful service history matters.

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

Key things to evaluate:

• Trim level: The Denali Ultimate is the most luxurious version, with nearly every available option, standard LED lighting, sequential turn signals, the six-passenger Crew Cab, and the MultiPro Tailgate. Lower trims do not bring the same level of standard luxury and convenience equipment.
• Powertrain: The Denali Ultimate uses a 6.6-litre Duramax turbocharged diesel V8 with 470 horsepower and 975 lb-ft of torque, paired with a 10-speed Allison automatic transmission and standard four-wheel drive. It is built for towing and hauling, but the truck’s size and firm suspension are part of the package.
• Safety package: GMC’s standard safety suite includes automatic emergency braking, forward collision warning, pedestrian detection, and lane departure warning. On the Denali Ultimate, front and rear parking sensors, a surround-view parking camera, adaptive cruise control, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera are standard.
• Infotainment: The Denali Ultimate gets a 13.4-inch touchscreen, a 15-inch multi-colour head-up display, wireless Apple CarPlay and Android Auto, wireless device charging, Google built-in, a 12-speaker Bose surround-sound system, and split-screen navigation.
• Fuel efficiency: During highway driving, the Duramax diesel dipped as low as 11.2 L/100 km, while suburban and city driving routinely climbed well beyond 20 L/100 km.

Which 2024 GMC Sierra 2500HD trim should I buy?

The 2024 GMC Sierra 2500HD is offered in 7 trim levels: Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate.

Here's the short version:

• Pro: This is the entry point if you want the Sierra HD’s core capability without paying for luxury extras, but it is the least equipped path in the lineup.
• SLE: This is the sensible step up if you want more everyday usability and a better balance of equipment and price than the Pro.
• SLT: This is the best-value trim if you want a more upscale feel without jumping all the way to the luxury-focused upper end.
• AT4: This is the off-road-oriented choice, and it is the trim to consider if you want the rugged hardware and standard 4WD that come with the more adventure-focused side of the lineup.
• Denali: This is the luxury-leaning trim for buyers who want a more premium cabin and a stronger emphasis on comfort.
• AT4X: This is the upgraded off-road trim for buyers who want the most rugged version of the Sierra HD lineup.
• Denali Ultimate: This is the top trim and the one to buy if you want the most complete mix of luxury, towing tech, and standard equipment.

From AT4 upward, 4WD is standard, and the Denali Ultimate adds the most comprehensive safety and trailering equipment in the range.

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

This is a moderate market for selective buyers, so you can shop with some leverage if you are patient.

• Deal availability: 31.0% of listings are priced as good or great deals.
• Inventory: There are 184 listings available.
• Price trend: Prices have softened 7.75% compared with last year.

If you find a listing below $76,790 CAD, 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 $78,773 CAD sits slightly below last year's $85,388 CAD.

That softer pricing suggests the market has become more favourable for buyers, but it also means future sellers may need to be realistic about what they can ask. Heavy-duty trucks can hold interest well when they are properly equipped and well maintained, yet the current trend shows that pricing pressure is still present. If you buy carefully now, you may have a better chance of limiting depreciation compared with someone who paid closer to last year’s average.

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, pedestrian detection, and lane departure warning. On the Denali Ultimate, front and rear parking sensors, a surround-view parking camera, adaptive cruise control, rear cross-traffic alert, blind-spot monitoring, and a rear-facing cargo bed camera are standard as well. The extra-large power-operated side mirrors also improve outward visibility.

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:

• 31.0% of listings are priced as good or great deals.
• Price trend: Prices have softened 7.75% compared with last year.
• Owners rate it 4.2/5 — a solid satisfaction signal.
• The 2024 model year adds the newly available Denali Ultimate trim, which brings nearly every available option and a more luxurious take on the Sierra HD formula.

The bottom line: If you want the most upscale version of the Sierra HD and value the added luxury and tech of the new Denali Ultimate, the 2024 is the year to target. If your priority is simply getting the lowest possible purchase price, a different year may be worth comparing, but the 2024’s softer pricing and strong owner satisfaction make it a compelling place to start.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.