One problem related to engine exhaust system has been reported for the 2014 Buick Enclave. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Buick Enclave based on all problems reported for the 2014 Enclave.
I have a p0420 code on my 2014 Buick Enclave for about a year now. Almost everything related to engine performance was replaced because no one could believe that the catalytic converter went bad - even at the dealership - on a 4 year old car where the aftermarket catalytic converter has a 5 year warranty. I spent over $2,000 so far replacing one thing after another at the dealership's advice because they did not even know the reason for the fault. Now I know it is the catalytic converter because the exhaust started smelling bad whenever the car is running. Gm/Buick should investigate why its catalytic converters are failing and fork the bill on fixing it.