Used 2018 GMC Sierra 1500 for Sale near Slidell, LA

## Summary - With 4,560 currently listed for sale on CarGurus and an **average price of $26,519.00**, 30.7% of 2018 GMC Sierras for sale on CarGurus are rated as good or great deals. - **Favorably reviewed:** Owners rated the 2018 GMC Sierra 1500 4.43 / 5 stars. - **68.6% of 2018 Sierra 1500 models on CarGurus are accident free**. - The 2018 GMC Sierra 1500 features additional standard content and safety features, making it a competitive option in the luxury truck segment. ## Why it stands out The 2018 GMC Sierra 1500 distinguishes itself with a strong emphasis on a smooth ride, luxurious interior, and an impressive array of standard features that appeal to both work and leisure needs. This model year sees notable enhancements, such as an upgraded infotainment system, now standard across all trims, and the addition of driver assistance technologies. While many owners laud its powerful engine options, fuel efficiency, and spacious cabin, some criticisms point to missing features like backseat vents and concerns regarding engine and transmission performance. Overall, the 2018 GMC Sierra 1500 remains a solid choice in the ever-evolving truck landscape, combining utility with comfort effectively. ## Other model years to consider - **[2020 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2020-GMC-Sierra-1500-c29270)** - Average price: $33,864.00 - Good/great deal percentage: 30.9% - User rating: 4.65 / 5 - Total listings: 7,235 - **[2021 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2021-GMC-Sierra-1500-c30942)** - Average price: $35,691.00 - Good/great deal percentage: 31.3% - User rating: 4.87 / 5 - Total listings: 7,509 - **[2019 GMC Sierra 1500](https://www.cargurus.com/Cars/l-Used-2019-GMC-Sierra-1500-c27478)** - Average price: $32,242.00 - Good/great deal percentage: 30.4% - User rating: 4.73 / 5 - Total listings: 5,612 This analysis is based on CarGurus' proprietary market data from February 19, 2026, CarGurus experts' opinions, and generative AI.