Engine Exhaust System Problems of GMC Terrain

The contact owns a 2018 Ford explorer. The contact stated that while accelerating there was an abnormal odor of exhaust inside the vehicle. There were no warning lights illuminated. The contact experienced a headache but medical attention was not provided. The vehicle was taken to the local dealer but they were unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 18,000.

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2013 GMC Terrain. Consumer writes in regards to smelling exhaust in vehicle.

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Significant exhaust fumes accumulating inside passenger cabin during idle/stop. Volume of gases smell less while in motion but still evident. Significant reduction in engine power noticable; as well as erratic noise from the engine and extemely hesitant acceleration response.

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Tl the contact owns a 2014 GMC Terrain. While driving approximately 40 mph in the rain, the windshield wipers suddenly stopped operating. The vehicle was taken to an independent mechanic who replaced the windshield wiper transmission assembly. Also, while starting the vehicle, a loud noise was present coming from the exhaust. The independent mechanic diagnosed that the exhaust manifold was cracked. The exhaust manifold was replaced and the failure was remedied. The local dealer and manufacturer were not notified. The failure mileage was 70,000.

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I ordered this vehicle in 12/2009 and received it 2/2010. There have been several recalls and most recently I had to replace cam shaft accuators and high pressure fuel pump to the tune of $1800. 00. My wife was driving home from work and the car was rattling and vibrating like it had two flat tires. Before that she informed that the service engine and stabilitrak lights had come on. There is a noise that rattles in the exhaust and I have had problems with the heater not working in the cold days of wisconsin. I am highly disappointed in GMC, who received a "bail out" now owners of this vehicle need a "bail out" from this terrible design of a vehicle.

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I have had my vehicle checked twice this year regarding the loud exhaust noise and the strong fuel smell coming from my vehicle. They said that it is not a concern and I get migraines from the smell as well. I take my little sister to school everyday and the the fumes are overwhelming.

Copy of letter to mr. Thomas d'addario, d'addario automotive group, explaining the serious problems which may have been caused by the mass air flow sensor hose not connected or dislodged during the engine/ecm module replacement. The consumer stated due to the problem, he experienced loss of power and a leaking exhaust and/or catalytic converter. Also, the consumer had to add one quart of oil every 1000 miles and the check engine light illuminated several times.

The contact owns a 2010 GMC Terrain. The contact smelled fumes coming from the vehicle and noticed a hole in the exhaust manifold. The dealer made eight attempts to duplicate the failure. The manufacturer was aware of the failure. No repairs were performed. The current mileage was 24,000. The approximate failure mileage was 134. The VIN was unavailable. Updated 07/21/11.