How much does the 2023 GMC Sierra 3500HD cost?

Prices have softened 7.98% compared to this time last year, making it a favorable time to shop this model year.

There are 1,161 listings available, which gives you a solid amount of inventory to compare before you commit.

If you find a listing below $56,426.76, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2023 GMC Sierra 3500HD a good car?

The 2023 GMC Sierra 3500HD stands out as a heavy-duty truck that blends serious work capability with a more polished personality than many buyers might expect. In its fifth generation, it was offered with a wide range of cab, bed, and rear-axle configurations, and it could be equipped for demanding towing and hauling jobs. The lineup also included a work-focused base model, more comfort-oriented trims, an off-road AT4, and a luxury-minded Denali, which helped the truck appeal to buyers who wanted either a straightforward tool or a more upscale heavy-duty pickup.

For 2023, the Sierra 3500HD carried the fifth-generation hardware that included a 6.6-liter V8 with 401 horsepower and 464 pound-feet of torque, or a 6.6-liter Duramax turbodiesel V8 with 445 hp and 910 lb-ft of torque. Properly equipped, it could haul as much as 7,442 pounds of cargo and tow up to 35,500 pounds. Standard features on the base model included a seven-inch infotainment touchscreen, Apple CarPlay, and Android Auto, while higher trims added conveniences such as trailering assist features, leather upholstery, heated front seats, and a larger touchscreen on the Denali. That mix of capability and available comfort is a big part of the Sierra 3500HD’s appeal.

There are tradeoffs, though. Heavy-duty trucks like this one are exempt from fuel-economy estimates, and the source notes that mileage should be expected to be among the lowest of any non-commercial vehicle. It also points out that rivals typically can tow more, so the Sierra 3500HD’s appeal is less about class-leading numbers and more about its combination of strong capability, broad configuration choices, and increasingly refined equipment.

With 26.2% of listings marked as good or great deals, you have a meaningful but selective market to shop.

Is the 2023 GMC Sierra 3500HD reliable?

The 2023 GMC Sierra 3500HD is presented as a heavy-duty truck with serious capability and a broad range of configurations, which can make it a practical choice if you need a truck built for demanding towing and hauling. Its available equipment also spans from basic work-truck essentials to more comfort-oriented and upscale features, so you can shop for the version that best fits your use case.

Because this is a heavy-duty truck, long-term ownership risk is tied less to everyday commuting and more to how hard the truck has been used. If you plan to buy used, you should pay close attention to signs of towing wear, maintenance history, and whether the truck’s equipment matches the kind of work it has actually done.

What should I look for when buying a used 2023 GMC Sierra 3500HD?

Accident-free inventory is excellent at 91% — clean inventory, standard diligence applies.

You should still run a vehicle history report and verify that the truck’s past use lines up with your needs, especially if you plan to tow or haul regularly. Prioritize a thorough inspection of the drivetrain, suspension, brakes, tires, and trailering-related equipment, since heavy-duty trucks can hide hard use even when they look clean on the surface. Focus on overall condition and maintenance records, not just mileage.

Is now a good time to buy a used 2023 GMC Sierra 3500HD?

This is a moderate market, so you can shop selectively without expecting every listing to be a bargain.

• Deal availability: 26.2% of listings are priced as good or great deals.
• Inventory: There are 1,161 listings available.
• Price trend: Prices have softened 7.98% compared with last year.
• Clean inventory: 91.0% of listings are accident-free.

If you find a listing below $56,426.76, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2023 GMC Sierra 3500HD's resale value?

The current average of $57,277 sits slightly below last year's $62,244.

That price movement suggests the truck has already absorbed some depreciation, which can help you as a buyer today. For a future seller, it means resale value may depend heavily on condition, configuration, and how well the truck has been maintained. Well-kept examples with desirable equipment should hold up better than hard-used trucks with incomplete service histories.

Should I buy a 2023 GMC Sierra 3500HD or consider a different year?

If you're weighing the 2023 against nearby model years, here's how to think about it:

Choose the 2023 if:

• 26.2% of listings are priced as good or great deals.
• Accident-free inventory is excellent at 91% — clean inventory, standard diligence applies.
• Price trend: Prices have softened 7.98% compared with last year.

The bottom line: The 2023 is a strong choice if you want a heavy-duty truck with broad configuration choices, serious towing and hauling ability, and a more polished feel than many rivals. If your priority is getting the best value, you should focus on clean, well-priced 2023 listings first; if you are especially price-sensitive, a nearby model year may be worth comparing for a lower entry point.

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