New & Used 2025 GMC Sierra 3500HD for Sale near Unityville, PA

## Summary - With 1,140 currently listed for sale on CarGurus and an **average price of $79,721.00**, 31.9% of 2025 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals. - **95.3% of 2025 Sierra 3500HD models on CarGurus are accident free**. - The 2025 GMC Sierra 3500HD is noted for its robust towing and hauling capabilities, cutting-edge technology features, and a variety of luxurious trim options. ## Why it stands out The 2025 GMC Sierra 3500HD continues the fifth generation's legacy of combining heavy-duty performance with upscale features. With a bold styling update from previous generations, it not only appeals to those needing a work-oriented truck but also targets buyers seeking luxury in their heavy-duty pickups, especially in its top-tier Denali trims. This model is equipped with advanced technologies aimed at enhancing towing, such as a comprehensive suite of safety features and a towing assist system. Buyers will appreciate its impressive maximum towing capacity of up to 35,500 pounds when appropriately configured, making it competitive with rivals like the Ford F-350 Super Duty and the Ram 3500. However, the high price of the fully loaded models can be a deterrent for some. ## Other model years to consider - **[2023 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2023-GMC-Sierra-3500HD-c32422)** - Average price: $58,480.00 - Good/great deal percentage: 33.7% - User rating: 5 / 5 - Total listings: 1,526 - **[2024 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2024-GMC-Sierra-3500HD-c32775)** - Average price: $69,444.00 - Good/great deal percentage: 32.3% - User rating: 5 / 5 - Total listings: 1,469 - **[2021 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2021-GMC-Sierra-3500HD-c30861)** - Average price: $53,590.00 - Good/great deal percentage: 37.4% - User rating: 5 / 5 - Total listings: 862 This analysis is based on CarGurus' proprietary market data from February 9, 2026, CarGurus experts' opinions, and generative AI.