Front Caster and Camber Adjustment

Special Tools 

J 45845  Caster and Camber Adjusting Tool. See Special Tools .

The caster and camber adjustments are made by loosening the lower control arm adjustment bolts and repositioning the lower control arm.

1. For an accurate reading, do not push or pull on the tires during the alignment process.
Fig 1: Caster Angle
Courtesy of GENERAL MOTORS CORP.
2. Determine the caster angle (2, 3).
Fig 2: Camber Angle
Courtesy of GENERAL MOTORS CORP.
3. Determine the camber angle (2, 3).
Fig 3: Caster & Camber Adjusting Tool
Courtesy of GENERAL MOTORS CORP.
4. Install the J 45845  to the lower control arm and the frame. See Special Tools .
5. Loosen the lower control arm adjustment nuts.
CAUTION: Refer to Fastener Caution .
6. Adjust the caster and the camber angle by repositioning the lower control arm until the specifications have been met.

   When the adjustments are complete, hold the lower control arm in position so that the specifications do not change while tightening the lower control arm adjustment bolts.

   Tighten:  Tighten the lower control arm adjustment bolts to 135 N.m (96 lb ft).

7. Verify that the caster and the camber are still within specifications. Refer to Wheel Alignment Specifications .

   When the caster and camber are within specifications, adjust the toe. Refer to Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment .