GM Service Manual Online
For 1990-2009 cars only

Lead/pull is the deviation of the vehicle from a straight path, on a level road, without hand pressure on the steering wheel.

Lead/pull is usually caused by the following factors:

    â€¢ Tire construction
    â€¢ Uneven brake adjustment
    â€¢ Wheel alignment

The way in which a tire is built may produce lead/pull. The rear tires will not cause lead.