Summary

• With 1,179 currently listed for sale and an average price of $76,670.00, 28.7% of 2025 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2025 GMC Sierra 3500HD 5 / 5 stars.

• 95.3% of 2025 Sierra 3500HD models on CarGurus are accident free.

• The 2025 GMC Sierra 3500HD continues to offer impressive towing and hauling capabilities, with a maximum towing capacity of up to 35,500 pounds when properly equipped.

Why it stands out

The 2025 GMC Sierra 3500HD stands out in the heavy-duty truck segment due to its blend of rugged capability and refined luxury. With a robust design that emphasizes both strength and style, this truck is built for serious work while also catering to those who appreciate a more upscale driving experience. The fifth-generation model, which debuted in 2020, has seen significant improvements in towing capacity and technology, making it a top choice for buyers needing a reliable workhorse. Notably, the Sierra 3500HD offers advanced features such as a MultiPro tailgate, a range of powerful engine options, and a luxurious Denali trim that elevates the driving experience. While it excels in performance and comfort, potential buyers should be aware that the higher trims can be quite expensive, and parking in tight spaces may be challenging due to its size.

Other model years to consider

• 2024 GMC Sierra 3500HD

  • Average price: $69,179.00
  • Good/great deal percentage: 29.3%
  • User rating: 5 / 5
  • Total listings: 1,230

• 2023 GMC Sierra 3500HD

  • Average price: $56,470.00
  • Good/great deal percentage: 27.4%
  • Accident-free percentage: 90.7%
  • Total listings: 1,144

• 2021 GMC Sierra 3500HD

  • Average price: $52,718.00
  • Good/great deal percentage: 28.2%
  • User rating: 5 / 5
  • Total listings: 681

This analysis is based on CarGurus' proprietary market data from July 20, 2026, CarGurus experts' opinions, and generative AI.