By ray ham on
2008 Buick LaCrosse CXS 4dr Sedan (3.6L 6cyl 4A)
I read the reviews about the vibration. We took ours to a tire shop and they told us the vibration was due to the rear struts being out of line. We took it to the dealer and they put in some shims to align the rear. They also said it was due to a factory defect. However they didn't want to accept responsibility for the ruined tires. Hope this helps anyone else with vibration problems.