One problem related to loud engine noise has been reported for the 2013 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Buick Lacrosse based on all problems reported for the 2013 Lacrosse.
I had the car repaired last year around this time with an issue saying that the battery charging system needed to be serviced. At the time I had recently bought a battery but the shop informed it could be due to a dead cell in the battery 1 year exactly and the same issue occurs. It start with the check engine light being displayed then it will start sending the message and battery light comes on. There should not be another dead cell battery. There is definitely an issue with the charging system of these cars. This will cause the vehicle when in eco mode to restart cause power loss whe driving and also cause the radio, navigation ect to loss brightness. The car releases loud sound for the a/c and defrost thumping and ticking also sputtering when accelerator is touched. Even when switching from park to any other gear is when this is heard regarding when a/c heat or defrost is on . This is during driving or after starting car. Originally happened 10/12/18 happening again as of 10/18/2019.