New & Used 2025 GMC Sierra 3500HD for Sale near Richey, MT

## Summary - With 1,114 currently listed for sale on CarGurus and an **average price of $79,124.00**, 29.6% of 2025 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals. - **95.6% of 2025 Sierra 3500HD models on CarGurus are accident free**. ## Why it stands out The 2025 GMC Sierra 3500HD is noteworthy for its impressive towing and hauling capabilities, making it an excellent choice for families and professionals alike requiring heavy-duty performance. It features two capable engine options: a 6.6-liter V8 engine producing 401 horsepower or a 6.6-liter Duramax turbodiesel V8 offering 445 horsepower, both designed to meet demanding towing requirements. Enhancements in technology and comfort, especially in higher trim levels like the luxurious Denali variant, give the Sierra 3500HD a touch of refinement compared to its competitors, like the Ford F-350 Super Duty and Ram 3500. However, potential buyers should consider the size and maneuverability challenges typical for heavy-duty trucks, especially when parked in urban or crowded areas. Despite these concerns, the Sierra 3500HD continues to be a strong contender in the heavy-duty market thanks to its robust feature offerings and impressive reliability, with 95.6% of models reported to be accident-free, highlighting its sturdiness on the road. ## Other model years to consider - **[2023 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2023-GMC-Sierra-3500HD-c32422)** - Average price: $57,903.00 - Good/great deal percentage: 31.8% - User rating: 5 / 5 - Total listings: 1,404 - **[2024 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2024-GMC-Sierra-3500HD-c32775)** - Average price: $69,594.00 - Good/great deal percentage: 30.2% - User rating: 5 / 5 - Total listings: 1,375 - **[2021 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2021-GMC-Sierra-3500HD-c30861)** - Average price: $52,764.00 - Good/great deal percentage: 34.9% - User rating: 5 / 5 - Total listings: 767 This analysis is based on CarGurus' proprietary market data from March 9, 2026, CarGurus experts' opinions, and generative AI.