One problem related to o2 sensor has been reported for the 2011 Buick Enclave. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Buick Enclave based on all problems reported for the 2011 Enclave.
We purchased a 2011 Buick Enclave for what we thought was a great deal. We were prepared to pay for basic maintenance right after purchase. The check engine light came on as we were driving on the highway. I noticed loss of power while on cruise control(set at 65mph) and the vehicle started shaking. I noticed the rpm jumping from 1 to 2 . We took the vehicle to Buick for repairs. We had a tune up, 2 catalytic converters replaced, 3 O2 sensors replaced along with one other one that I'm not sure the name, oil change, struts and shocks, rear sway bar links, air filter, and a gasket manifold. We have not had this vehicle longer than 2 months. The vehicle is still doing the same thing. Today after we picked it up from the shop(no check engine light) we drove it on the highway and now the service traction control light is on along with stabilitrak control. We have 6 children. This is dangerous. What are we to do?.