One problem related to engine knocking noise has been reported for the 2012 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Buick Lacrosse based on all problems reported for the 2012 Lacrosse.
2012 Buick Lacrosse. Consumer states mechanical breakdown the consumer stated while driving, he could smell a burning odor and a very low knocking sound coming from the vehicle. The vehicle was taken to the dealer for a diagnosis. The consumer was informed there was no oil on the dip stick, the rear main seal was leaking and there was oil leaking between the engine and transmission. The consumer also stated a warning light never appeared on the dashboard to warn him of a problem.