Two problems related to loud engine noise have been reported for the 2014 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Terrain based on all problems reported for the 2014 Terrain.
I bought it in June 2020. Used excessive oil. I kept adding oil. I thought it was an oil leak and took it in to firestone to get fix. As I was almost there the engine light came on and was making a loud noise under the hood. First warning of anything was wrong, no other lights showed on dash indicating a problem. I was driving when this happened. Firestone said really bad oil leak that damaged timing chain and lower engine. They said I need to replace the engine. Why didn't I get any warning lights indicating there was a problem before my engine was damaged due to excessive oil usage. I see this same issue has happened to other owners with this vehicle. I was driving on the highway and could have been in an accident.
Tl- the contact owns a 2014 GMC Terrain. The contact stated while driving 20 mph, when she started to hear an abnormal noise. The contact stated check engine warning light was illuminated. The contact also stated when station at a traffic light, when the vehicle began to stall. The vehicle was taken to an independent mechanic and was informed the timing chain was needing to be replaced. The vehicle had not been repaired as of yet. The vehicle was not diagnosed or repaired as of yet. A dealer was not contacted. The manufacturer had been informed of failure. The failure mileage was approximately 45,000. The VIN was not available. Dp.