Sierra 1500 2WD V8-5.3L VIN B HO (2006)
2. Frame angle is positive when higher in the rear. Measure both sides of the frame and take an average from those measurements. Then add the
average frame angle to the caster reading when making adjustments.
3. Frame angle is negative when lower in the rear. Measure both sides of the frame and take an average from the measurements. Then subtract the
average frame angle from the caster reading when making adjustments.
4. The caster and camber adjustments are made by rotating the offset cam bolt and the cam in the slotted frame bracket in order to reposition the
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 is 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.
5. Determine the caster angle (2). Be sure to compensate for frame angle where required.