Start by removing the drive shaft to check for tight spots in the u-joints. If you think it's a chattering in the rear axle, there is a whale oil additive that should be in there. The axle won't cause a problem when driving straight ahead.
Don't overlook a ride height problem. Low ride height will reduce drive shaft angle which can cause a vibration.
Monday, September 7th, 2009 AT 2:15 AM