Detailed specs and features for the Used 2021 GMC Terrain SLT including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.

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Search from 432 Used GMC Terrain cars for sale, including a 2021 GMC Terrain Denali, a 2021 GMC Terrain SLE, and a 2021 GMC Terrain SLT ranging in price from $5,100 to $32,855.

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Getting a 2021 GMC Terrain SLT? See complete review with photos, cost, specs, dimensions & horsepower info. Lookup 2021 GMC Terrain SLT for sale, problems & recalls by VIN.