DEFINITION: Vehicle front wheel shimmy or shake while driving on a smooth road.

The tire and wheel are out of balance.

Balance the tires. Refer to Tire and Wheel Balancing in Vibration Diagnosis and Correction.

The tire and wheel are out of round.

Check runout. Refer to Tire and Wheel Vibration in Vibration Diagnosis and Correction.

The wheel bearings are worn or loose.

Adjust the wheel bearings. Refer to Wheel Bearing Adjustment in Front Suspension.

The king pin or king pin bearing are worn or loose.

1. Replace the worn parts as needed.
2. Adjust the king pin bearing.

Refer to Steering Knuckle and King Pin Replacement in Front Suspension.

The shock absorber is malfunctioning.

1. Inspect the shock absorber. Refer to Struts or Shock Absorbers Bench Test .
2. Replace the shock absorber as needed. Refer to Shock Absorber Replacement in Front Suspension.