GMC Terrain owners have reported 1 problem related to engine oil/lubrication seals/gaskets (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Terrain based on all problems reported for the Terrain.
The contact's wife owns a 2017 GMC Terrain. The contact stated while his wife was driving 40 mph, the vehicle started to stall, and shuddered inadvertently. The check engine warning light was illuminated. The contact met his wife at the scene and noticed that oil was leaking from underneath the front end of the vehicle onto the ground. The contact refilled the engine oil and his wife was able to drive the vehicle to their residence; however, oil continued to leak while she was driving. The contact refilled the engine oil and the vehicle was taken to the dealer, where it was diagnosed that the rear main seal was fractured and had failed. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that there were no recalls associated with the failure; however, the manufacturer offered to cover 13-percent of the repair cost. The failure mileage was approximately 94,000.
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