Could be bad bearings, bad axle joint, broken mounts, loose suspension parts, is engine running smoothly? Is CEl on?
March, 29, 2012 AT 8:29 PM
Do you have a check engine light?
Check all the driveaxles/driveshaft and U-Joints if its loose, engine and tranny mounts, check the transmission and transfer case fluid level and condition, if it continues have the transmission pressure tested to find out more what's going on-