2018 GMC Terrain GMC Terrain 2018
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2018 GMC Terrain repairs by problem area

Engine (30%)

Transmission and Drivetrain (20%)

Brakes and Traction Control (0%)

Suspension and Steering (0%)

Electrical and Air Conditioning (40%)

Paint, Rust, Leaks, Rattles, and Trim (10%)

Other (0%)

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Chart based on 10 repairs.
See TSBs and recalls for the 2018 GMC Terrain.

2018 GMC Terrain 4dr SUV

turbocharged 137hp 1.6L I4 Diesel 6-speed shiftable automatic 4WD

28000 mi Diagnosis of CEL. In need of EGR heat exchanger replacement. Parts currently on back order. CLE EGR cooling system performance - new software download to attempt to correct. 
24000 mi Exhaust Gas Recirculation (EGR) heat exchanger replacement. Original not able to maintain temp in required band causing check engine light (CEL). Issue did not result in drivability issues only CEL. 

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2018 GMC Terrain Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2018 GMC Terrain problems occur, check out our car reliability stats.