DEFINITION: Vibration occurs while driving the vehicle at highway speeds.

There are out of balance or out of round tires.

Balance or replace the tires. Refer to Tire and Wheel Removal and Installation in Tires and Wheels or Tire and Wheel Balancing in Vibration Diagnosis and Correction.

The front end is out of alignment.

Align the front end. Refer to Wheel Alignment Specifications in Wheel Alignment.