Summary

• With 161 currently listed for sale near Seattle, WA and an average price of $73,532.00, 18.0% 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.

• 97.5% of 2025 Sierra 3500HD models on CarGurus are accident free.

• The 2025 GMC Sierra 3500HD continues to offer impressive towing and hauling capabilities, along with luxurious higher trim levels and smart tech features for towing and off-roading.

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 history dating back to the early 1900s, the Sierra 3500HD has evolved from a workhorse into a sophisticated vehicle that appeals to both commercial users and luxury truck buyers. The fifth-generation model, introduced in 2020, has made significant strides in technology and performance, boasting a maximum towing capacity of up to 35,500 pounds when properly equipped. This model is particularly appealing for those who need serious hauling power without sacrificing comfort, especially in the higher-end Denali trims, which offer premium materials and advanced features. While it excels in many areas, potential buyers should be aware that its larger size can make it unwieldy in tight spaces, and top trims can come with a hefty price tag.

Other model years to consider

• 2024 GMC Sierra 3500HD

  • Average price: $67,623.00
  • Good/great deal percentage: 21.3%
  • User rating: 5 / 5
  • Total listings: 155

• 2023 GMC Sierra 3500HD

  • Average price: $58,997.00
  • Good/great deal percentage: 20.3%
  • User rating: 5 / 5
  • Total listings: 138

• 2021 GMC Sierra 3500HD

  • Average price: $51,769.00
  • Good/great deal percentage: 26.9%
  • User rating: 5 / 5
  • Total listings: 67

This analysis is based on CarGurus' proprietary market data from July 14, 2026, CarGurus experts' opinions, and generative AI.