AutoMD ... 3/20/2014
1998 Jeep Grand Cherokee Laredo 6 Cyl 4.00L
Transmissions & Drivetrains
What causes a thump- thump-thump in rear when vehicle is going down the road?
New rakes and rotors. Tires and wheels checked.
Several possibilities; faulty / worn rear axle bearing, tire or wheel out-of-balance, tire worn or tread flat spot - or bubble / separated tread. May also be related to worn / faulty rear shock absorbers or worn / faulty suspension bushings. In addition, be sure to check the exhaust system mounting along the length of the vehicle.