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2021 GMC Terrain
Problems & Complaints
Worst 2021 GMC Terrain Problems by Category
Click on a category below for details. Help?
- transmission problems
- drivetrain problems
- electrical problems
- brakes problems
- miscellaneous problems
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Compare GMC Terrain Model Years
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Check out our GMC Terrain overview to see the most problematic years, worst problems and most recently reported complaints with the Terrain.
Worst 2021 GMC Terrain Problems
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#1: Grating Shift Sound And Car Shaking 2021 Terrain
- Average Cost to Fix:
- N/A
- Average Mileage:
- 29,000 mi
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