Steering Wheel Shimmy


#1

On my 1997 Chevy 1 ton dually the Steering wheel shimmies between 25 - 35 mph. After 40mph it stops. The ball joint were replaced and all the tie rod ends are tight. Other mechanics cannot figure out the problem.


#2

Did they also check for bent rim(s), loose wheel bearings, out of round tires, flat-spots, etc? Any of these might cause a low speed shimmy. HTH.