Used 2020 GMC Sierra 3500HD for Sale near Toronto, ON

## Summary - With 61 currently listed for sale and an **average price of $59,948.00 CAD**, 24.6% of 2020 GMC Sierras 3500HD for sale on CarGurus are rated as good or great deals. - **Favourably reviewed:** Owners rated the 2020 GMC Sierra 3500HD 5 / 5 stars. - **100.0% of 2020 Sierra 3500HD models on CarGurus are accident-free**. ## Why it stands out The 2020 GMC Sierra 3500HD is recognized for its impressive performance, particularly when it comes to towing and hauling capabilities, making it a go-to choice for those needing a reliable heavy-duty truck. Owners have noted strong preferences for the vehicle's comfort and well-built design when compared to competitors from Ford and Ram. The Sierra 3500HD also features a variety of modern technologies that enhance both driving and off-roading experiences. The fifth-generation model, which started in 2020, introduced enhancements that significantly increased towing capacity. However, it's important to note that while the top trim models offer luxury features, they can become prohibitively expensive. Overall, the 2020 Sierra 3500HD presents an appealing combination of power, luxury, and advanced technology. ## Other model years to consider - **[2024 GMC Sierra 3500HD](https://www.cargurus.ca/Cars/l-Used-2024-GMC-Sierra-3500HD-c32775)** - Average price: $83,161.00 CAD - Good/great deal percentage: 30.6% - User rating: 5 / 5 - Total listings: 147 - **[2023 GMC Sierra 3500HD](https://www.cargurus.ca/Cars/l-Used-2023-GMC-Sierra-3500HD-c32422)** - Average price: $77,354.00 CAD - Good/great deal percentage: 26.5% - Accident-free percentage: 100.0% - Total listings: 147 - **[2025 GMC Sierra 3500HD](https://www.cargurus.ca/Cars/l-Used-2025-GMC-Sierra-3500HD-c33463)** - Average price: $93,593.00 CAD - Good/great deal percentage: 31.1% - User rating: 5 / 5 - Total listings: 119 This analysis is based on CarGurus' proprietary market data from May 25, 2026, CarGurus experts' opinions, and generative AI.