Used 2021 GMC Sierra 1500 for Sale near Riverside, CA

## Summary - With 7,338 currently listed for sale on CarGurus and an **average price of $35,677.00**, 34.4% of 2021 GMC Sierra 1500s for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2021 GMC Sierra 1500 4.87 / 5 stars. - **79.7% of 2021 Sierra models on CarGurus are accident free**. - The 2021 GMC Sierra 1500 is recognized for its luxurious features and exceptional engine performance, particularly highlighting the affordability and efficiency of the Duramax turbodiesel inline-six engine. ## Why it stands out The 2021 GMC Sierra 1500 stands out in the full-size pickup market with its appealing blend of style, comfort, and performance. Notably, this model year enhances the driving experience with the option of a Duramax 3.0-liter turbodiesel engine that not only provides impressive torque at low RPMs but also maintains optimal fuel efficiency. The truck's interior showcases advanced technology alongside upscale trimming options, especially in the Denali and AT4 variants, making it a strong competitor in luxury truck segments. Nevertheless, some buyers may be disappointed by the use of lower-grade interior materials and the need to purchase extra packages for additional features. Overall, the 2021 Sierra 1500 is highly praised for its robust performance, especially when equipped with the right powertrain and technology features. ## Other model years to consider - **[2023 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2023-GMC-Sierra-1500-c32269)** - Average price: $46,217.00 - Good/great deal percentage: 34.2% - User rating: 4.47 / 5 - Total listings: 9,560 - **[2022 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2022-GMC-Sierra-1500-c31916)** - Average price: $43,294.00 - Good/great deal percentage: 34.0% - User rating: 4.65 / 5 - Total listings: 9,163 - **[2020 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2020-GMC-Sierra-1500-c29270)** - Average price: $33,818.00 - Good/great deal percentage: 33.9% - User rating: 4.65 / 5 - Total listings: 7,065 This analysis is based on CarGurus' proprietary market data from February 23, 2026, CarGurus experts' opinions, and generative AI.