Three problems related to engine oil leaking 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.
Tl the contact called on behalf of his daughter who owns a 2014 GMC Terrain. The contact stated that while his daughter was driving 60 mph, without warning, the rear main seal fractured causing oil to leak from the vehicle. The vehicle was towed to the residence. The vehicle was not diagnosed nor repaired. The contact, a certified mechanic, inspected the vehicle and noticed the oil leaking from the rear main seal. Tom davis Chevrolet Buick (2831 n 16th st, parsons, KS 67357, (620) 860-0751) was contacted and informed of the failure. The contact was informed that the VIN was not under recall. The manufacturer was notified of the failure however, no further assistance was provided. The failure mileage was approximately 106,000.
While driving on highway at approximately 70 mph, on low temperature day (~f), smoke began emitting from bottom of vehicle with pungent smell. The vehicle was immediately pulled over and shut off. There was oil covering the entire undercarriage. The oil was present substantially on the exhaust system, allowing for potential of fire if vehicle continued driving. The rear main seal was leaking and required to be towed home then to dealer at later date for repair. The repair and associated remedies followed TSB 19-na-021 but were not warrantied as the vehicle's VIN did not fall under the associated bulletin's guidelines. All repairs and remedies were identical to previous reported failures of above listed bulletin.
My engine light came on as I was driving on the highway. Felt like there was slight exhaust smell leaking in the cabin because had a headache driving home and driving to dealership. Also, noticed black oil or wet soot inside my tailpipe after I parked it and checked it. Stanley Chevrolet told me that it was a bad timing chain beating against engine causing a gas smell and quoted me over 2 grand to repair.