GM Service Manual Online
For 1990-2009 cars only

Problem

Action

Poor road or wind conditions.

    â€¢ Test drive the vehicle on a flat road.
    â€¢ Test drive the vehicle in both directions.

Misaligned front wheels.

Align the front wheels. Refer to the applicable procedure in Wheel Alignment:

    â€¢ Front Caster and Camber Adjustment
    â€¢ Front Toe Adjustment (Light Duty)

Unbalanced steering gear valve.

Replace the steering gear valve.

The steering shaft is rubbing the I.D. of the shaft tube.

Align the steering column.