Two problems related to check engine light on have been reported for the 2012 Buick Enclave. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Buick Enclave based on all problems reported for the 2012 Enclave.
My vehicle just turned off while at a stop sign preparing to turn. It was towed to a mechanic that advised it was 2 quarts low in oil (oil was replaced 2 weeks prior) and that my battery needed to be replaced. They added the oil and replaced the battery. I drive the car ~ 5 miles home and it stopped again. This time when trying to start the car, there was an audible screeching coming from the engine and the engine was shaking. The mechanic offered to towels the car back to their shop. After inspection, they advised that "something" was broken inside the engine and that it needed to be replaced. My car has 75,000 miles on it; has had regular maintenance; there were no check engine lights and/or over heating lights. I was also advised by the mechanic that this is a common known issue with Buick. I'm now left with having to pay anywhere from $7500-$8500 to replace an engine on a vehicle that I've had for 2 years.
When accelerating engine will shudder, lose power and drive very bumpy. I have taken vehicle for service. We have replaced all filters, points and plugs. Given the vehicle a tune up and the problem has not ceased. The check engine light is not illuminated so the computer does not give the repair shop the information it needs to repair whatever may be occurring with the engine.