2018 GMC Terrain SLT 2.0L Turbo Comfortable, stylish, and nicely equipped, this 2018 GMC Terrain SLT has exactly 102,289 miles and is powered by a responsive 2.0L turbocharged 4-cylinder engine. Inside, you’ll find leather and heated seating, memory and power seats, navigation, remote start, a sunroof, and premium sound. It’s also Satellite Radio Capable and OnStar Capable for added connectivity with an active subscription.