Used 2020 GMC Sierra 1500 for Sale near Mississauga, ON

## Summary - With 511 currently listed for sale and an **average price of $39,221.00 CAD**, 30.9% of 2020 GMC Sierras for sale on CarGurus are rated as good or great deals. - **Favourably reviewed:** Owners rated the 2020 GMC Sierra 1500 4.28 / 5 stars. - **100.0% of 2020 Sierra models on CarGurus are accident free**. ## Why it stands out The 2020 GMC Sierra 1500 is notable for its upscale design and strong performance, appealing to buyers looking for a full-size pickup that balances luxury and capability. Owners have praised its spacious interior and advanced technology features. While the truck excels in various aspects such as trailering capability and versatile trim options, it has also faced some criticism, particularly regarding engine performance issues. The 2020 model sits in the fifth generation of the Sierra 1500, which has seen significant updates since its introduction in 2019, including features like the MultiPro tailgate that enhances practicality. This model has consistently received high reliability ratings, and with a 100% accident-free record among available listings, it represents a solid choice for used truck shoppers. ## Other model years to consider - **[2022 GMC Sierra 1500](https://www.cargurus.ca/Cars/l-Used-2022-GMC-Sierra-1500-c31916)** - Average price: $49,656.00 CAD - Good/great deal percentage: 31.7% - User rating: 5 / 5 - Total listings: 810 - **[2025 GMC Sierra 1500](https://www.cargurus.ca/Cars/l-Used-2025-GMC-Sierra-1500-c33540)** - Average price: $68,598.00 CAD - Good/great deal percentage: 31.2% - User rating: 5 / 5 - Total listings: 1,207 - **[2024 GMC Sierra 1500](https://www.cargurus.ca/Cars/l-Used-2024-GMC-Sierra-1500-c32900)** - Average price: $58,167.00 CAD - Good/great deal percentage: 32.4% - User rating: 4.6 / 5 - Total listings: 1,412 This analysis is based on CarGurus' proprietary market data from May 4, 2026, CarGurus experts' opinions, and generative AI.