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Front Caster and Camber Adjustment

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Caster measurements are now relative to ground.
  1. 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.
    2. IMPORTANT: Before adjusting the caster and camber angles, jounce the front bumper 3 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 .
  2. For an accurate reading, do not push or pull on the tires during the alignment process.
    3. Fig 1: Determining The Caster Angle
    GM821576Courtesy of GENERAL MOTORS CORP.
  3. Determine the caster angle (2).
    4. Fig 2: Determining The Positive Camber Or Negative Camber
    GM365809Courtesy of GENERAL MOTORS CORP.
  4. Determine the positive camber (2) or negative camber (3) angle.
  5. Remove the pinned adjusting cam insert. Do not reinstall the cam insert.
  6. Loosen the upper control arm cam adjustment bolts.
    7. Fig 3: Adjusting The Caster & The Camber Angle
    GM376758Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  7. Adjust the caster and the camber angle by turning the cam bolts until the specifications have been met. When the adjustments are complete, hold the cam bolt head in order to ensure the cam bolt position does not change while tightening the nut.

    Tighten:  Tighten the cam nuts to 190 N.m (140 lb ft).

  8. 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 Front Toe Adjustment .
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