Used 2021 GMC Sierra 3500HD for Sale near Frankenmuth, MI

## Summary - With 749 currently listed for sale on CarGurus and an **average price of $53,430.00**, 32.0% of 2021 GMC Sierra 3500HD models for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 GMC Sierra 3500HD 5 / 5 stars. - **79.3% of 2021 Sierra 3500HD models on CarGurus are accident free**. - The 2021 GMC Sierra 3500HD features enhanced towing capabilities, a refined interior with luxurious options, and advanced technology for improved safety and convenience. ## Why it stands out The 2021 GMC Sierra 3500HD stands out in the heavy-duty truck segment due to its impressive balance of rugged capabilities and upscale refinement. This model year showcases a powerful engine lineup, including a robust diesel option that significantly increases towing capacity, making it ideal for heavy-duty hauling. The truck's interior reflects a shift towards luxury, especially in higher trims like the Denali, where premium materials and advanced technology come standard. Notably, it retains strong safety features and user-friendly tech, appealing to buyers who need a workhorse that doesn’t compromise on comfort and style. However, potential buyers should consider the larger dimensions, which may pose challenges in tight spaces. ## Other model years to consider - **[2023 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2023-GMC-Sierra-3500HD-c32422)** - Average price: $57,732.00 - Good/great deal percentage: 29.8% - User rating: 5 / 5 - Total listings: 1,416 - **[2024 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2024-GMC-Sierra-3500HD-c32775)** - Average price: $69,430.00 - Good/great deal percentage: 29.1% - User rating: 5 / 5 - Total listings: 1,375 - **[2017 GMC Sierra 3500HD](https://www.cargurus.com/Cars/l-Used-2017-GMC-Sierra-3500HD-c26316)** - Average price: $39,738.00 - Good/great deal percentage: 34.4% - User rating: 5 / 5 - Total listings: 294 This analysis is based on CarGurus' proprietary market data from March 2, 2026, CarGurus experts' opinions, and generative AI.