GM Service Manual Online
For 1990-2009 cars only

Alignment is the proper positioning or state of adjustment of parts in relation to each other. In order to ensure efficient steering and satisfactory tire life, proper alignment of the front wheels must be maintained. For details on tire wear patterns caused by alignment problems. Refer to Wheel Alignment Specifications in Suspension.

The most important factors of front wheel alignment are:


Object Number: 200188  Size: SH
    • Wheel toe-in

Object Number: 200191  Size: SH
    • Wheel camber

Object Number: 200311  Size: SH
    •  Axle caster
        Kingpin inclination and camber are designed into the axle end. Check the front wheel alignment at regular intervals and particularly after the front axle has been subjected to heavy impacts such as a collision or a hard curb impact. The wheel bearings must be properly adjusted before checking the alignment.
        Loose wheel bearings will affect the instrument measurements when checking the wheel toe-in, wheel camber, and axle caster. When checking the alignment, follow the instructions carefully. Also follow the instructions covering each of these units:
       - The brakes
       - The springs
       - The steering gear
       - The hubs and bearings
       - The tires and wheels