Front Caster and Camber Adjustment

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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

IMPORTANT: Before adjusting the caster and camber angles, jounce the front bumper three times to allow the vehicle to return to normal height.

Measure and adjust the caster and the camber with the vehicle at curb height. The front suspension Z dimension and the rear suspension D dimension are indicated in Trim Heights. Refer to Trim Height Inspection Procedure in Suspension General Diagnosis.

For an accurate reading, do not push or pull on the tires during the alignment process.
Determine the caster (2, 3) angle.

Fig 1: Adjusting Caster Angle
Courtesy of GENERAL MOTORS CORP.
Determine the camber (2, 3) angle.

Fig 2: Adjusting Camber Angle
Courtesy of GENERAL MOTORS CORP.
Loosen the lower control arm adjustment bolts (1).
NOTE: Refer to Fastener Notice in Cautions and Notices.
Adjust the caster and the camber angle by repositioning the lower control arm (2) 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 front lower control arm bracket mounting bolt to 260 N.m (192 lb ft).
- Tighten
Tighten the rear lower control arm bracket mounting bolts to 240 N.m (177 lb ft).
Verify that the caster and the camber are still within specifications. Refer to Wheel Alignment SPECIFICATIONS .

Fig 3: Loosening Lower Control Arm Adjustment Bolts
Courtesy of GENERAL MOTORS CORP.

When the caster and camber are within specifications, adjust the toe. Refer to FRONT TOE ADJUSTMENT .