How can I fix a high speed shimmy on a lifted supercab truck?

Answer by  Paul41 (87)

The main things to check would be the tires. Make sure the tires are balanced, if they are next I would check the drive shaft, believe it or not the drive shaft being out of balance can make the whole cab shake if it its out.

Answer by  Amber40 (24961)

The make sure all your nuts and bolts are tight and nothing is damaged. Also check your alignment and wheels bearings. You might need to upgrade your steering stabilizer.

Answer by  lawnmowerman (94)

first you have to determine if it is in driveline or tires,the most common is tires due to their bigger sizes they are very hard to balance. the driveline may be at too much of an angle due to lifting. check driveshaft angle and u-joints and use high angle parts.

Answer by  Ralphie1954 (420)

You have changed the driveline angles of the driveshaft. Doing this defeats the constant velocity of the driveshaft so at one point the front is turning faster than the back and then vice versa. This causes a rocking motion that you perceive as a shimmy and can cause failure.