One problem related to axle assembly has been reported for the 1999 Oldsmobile Bravada. The most recently reported issues are listed below.
Severe vibration in vehicle at speeds of 60 mph and up. Dealer thinks it may be in the drive axle or cluth assembly, but Oldsmobile will not let him do anything to the vehicle because they don't think it will help. Oldsmobile knows about the problem, but was not open about the problem when discussed at the time the car was new. Just now finding out it is not the tires as I was lead to believe. Dealer has replaced all four tires.