Used 2021 GMC Sierra 2500HD for Sale near Silver Spring, MD

## Summary - With 1,969 currently listed for sale on CarGurus and an **average price of $50,644.00**, 32.5% of 2021 GMC Sierra 2500HDs for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 GMC Sierra 2500HD 4.69 / 5 stars. - **78.7% of 2021 Sierra 2500HD models on CarGurus are accident free**. - The 2021 GMC Sierra 2500HD stands out for its robust towing capability, luxurious Denali trim, and advanced technology features that improve the driving experience. ## Why it stands out The 2021 GMC Sierra 2500HD is distinguished by its combination of rugged performance and upscale features, setting it apart from many of its competitors. This model year boasts a strong 6.6-liter V8 gas engine or an optional Duramax turbodiesel, providing excellent towing capacities that make it ideal for heavy-duty tasks. Noteworthy features include advanced infotainment systems with smartphone integration, various luxury options in the Denali trim, and multiple cab configurations that enhance practicality. The 2021 model adds improvements in ride quality and interior comfort, making it appealing for both work and leisure use. While it excels in many areas, some users have expressed concerns about the complexity of features, which may be less intuitive compared to simpler rivals. ## Other model years to consider - **[2023 GMC Sierra 2500HD](https://www.cargurus.com/Cars/l-Used-2023-GMC-Sierra-2500HD-c32421)** - Average price: $56,826.00 - Good/great deal percentage: 33.5% - User rating: 4.33 / 5 - Total listings: 3,521 - **[2020 GMC Sierra 2500HD](https://www.cargurus.com/Cars/l-Used-2020-GMC-Sierra-2500HD-c28993)** - Average price: $49,094.00 - Good/great deal percentage: 32.5% - User rating: 4.88 / 5 - Total listings: 1,366 - **[2022 GMC Sierra 2500HD](https://www.cargurus.com/Cars/l-Used-2022-GMC-Sierra-2500HD-c31559)** - Average price: $53,217.00 - Good/great deal percentage: 34.0% - User rating: 4.86 / 5 - Total listings: 2,111 This analysis is based on CarGurus' proprietary market data from March 2, 2026, CarGurus experts' opinions, and generative AI.