Used 2023 GMC Sierra 3500HD for SaleNationwide

How much does the 2023 GMC Sierra 3500HD cost?

Prices have softened 7.88% compared to this time last year, making it a favorable time to shop this model year.

There are 1,159 listings available, which gives you a solid amount of inventory to compare.

Is the 2023 GMC Sierra 3500HD a good car?

The 2023 GMC Sierra 3500HD stands out as a heavy-duty truck that blends serious capability with a wide spread of configurations and trim levels. It was offered with a regular cab, an extended cab, or a crew cab, and buyers could choose between a short bed or a long bed, plus either a single- or dual-wheel rear axle.

For you, that means the Sierra 3500HD can serve as either a basic work truck or a more upscale hauler. Its biggest strengths are its towing and hauling ability, its range of body styles and trims, and its mix of work-focused and upscale features. The main drawback is that heavy-duty trucks like this are unwieldy in parking lots, and the top trims can be prohibitively expensive.

32.9% of listings are priced as good or great deals, which gives you some room to shop selectively.

Is the 2023 GMC Sierra 3500HD reliable?

The 2023 GMC Sierra 3500HD includes useful safety equipment such as forward collision alert with automatic emergency braking, a blind-spot monitor with rear cross-traffic alert, lane departure warning, and a teen driver mode. It also offers a broad range of equipment that lets it work as a basic truck or a more upscale hauler.

For you, the key reliability takeaway is that this is a heavy-duty truck built around capability, so long-term ownership risk is less about the concept and more about how hard a specific truck has been used. A careful inspection matters because towing, hauling, and work use can accelerate wear.

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

Accident-free inventory is excellent at 91.1% — clean inventory, standard diligence applies.

You should still run a history report on any truck you’re seriously considering, especially if it has been used for towing or commercial work. Put inspection priority on the drivetrain, suspension, brakes, tires, and signs of heavy-duty use, then focus on overall condition and maintenance records before you commit.

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

This looks like a moderate, selective buyer’s market, so you can shop with some leverage if you’re patient and disciplined.

• Deal availability: 32.9% of listings are priced as good or great deals.
• Inventory: There are 1,159 listings available.
• Price trend: Prices have softened 7.88% compared with last year.
• Clean inventory: 91.1% of listings are accident-free.

If you find a listing below $56,287, 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 $57,258 sits slightly below last year's $62,156.

That price movement suggests the market has cooled, which can help you buy more confidently now but may also mean slower appreciation if you plan to sell soon. For a future seller, the upside is that heavy-duty trucks with strong capability and broad appeal can still hold interest, but your return will depend heavily on condition, mileage, and how well the truck has been maintained.

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:

• 32.9% of listings are priced as good or great deals.
• Accident-free inventory is excellent at 91.1% — clean inventory, standard diligence applies.
• Price trend: Prices have softened 7.88% compared with last year.

The bottom line: The 2023 is a strong choice if you want the Sierra 3500HD’s capability and a market that currently gives you some negotiating room. If you’re especially price-sensitive, you may want to compare nearby years and focus on the truck with the best condition, history, and equipment for your budget rather than chasing the newest badge alone.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.