Summary

• With 1,174 currently listed for sale and an average price of $57,661.00, 29.9% of 2023 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.

• 90.5% of 2023 Sierra 3500HD models on CarGurus are accident free.

Why it stands out

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.

Other model years to consider

• 2024 GMC Sierra 3500HD

  • Average price: $68,734.00
  • Good/great deal percentage: 30.6%
  • User rating: 5 / 5
  • Total listings: 1,296

• 2025 GMC Sierra 3500HD

  • Average price: $76,288.00
  • Good/great deal percentage: 29.7%
  • User rating: 5 / 5
  • Total listings: 1,228

• 2020 GMC Sierra 3500HD

  • Average price: $51,371.00
  • Good/great deal percentage: 30.5%
  • User rating: 5 / 5
  • Total listings: 439

This analysis is based on CarGurus' proprietary market data from August 10, 2026, CarGurus experts' opinions, and generative AI.