Two problems related to front suspension shock absorber have been reported for the 1999 Buick Lesabre. The most recently reported issues are listed below.
The car shows an annoying and unsafe condition when it is driven at the speed limit on an irregular but properly paved road surface. The shock absorbers will allow several cycles fo bouncing before they dampen out the response to bumps. On several occasions I have had to stop the car in order to regain control, or to prevent bottoming out of the underside. I brought the car in to a local Buick service center where it was diagnosed as "normal soft ride" and dismissed. Pursuing this directly with Buick has yielded the fact that they are aware of the problem and are working on a fix. They have assigned a case number ( 000013545) and promised to advise me when the corrective action becomes available. It seemsprudent, however to document this with NHTSA.
While traveling at 60 mph and over a bump, the vehicle would jump all over the road consumer first noticed that vehicle leaned severely on curves, this would almost cause loss of vehicle control, at times, the back shocks would bottom out, consumer had the rear springs replaced. Recently, consumer lost control of the vehicle, overcorrected, and vehicle overturned, consumer was killed in the accident, his wife was also injured. Vehicle also experienced a rattle in the dashboard, the dealer pulled the dash forward to secure it better, however the rattle returned, so consumer fixed problem himself.