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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 915 (Wheel Alignment Specifications & Adjustment Procedures) >> Repair Instructions >> Front Caster and Camber Adjustment (RWD)

Front Caster and Camber Adjustment (RWD)

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Important:  Before you adjust caster and camber angles, raise and release the front bumper. Do this twice in order to allow the vehicle to return to a normal height. Refer to WHEEL ALIGNMENT SPECIFICATIONS .

  1. Adjust the caster and the camber by inserting shims between the upper control arm shaft and the frame bracket. Add shims or subtract shims or transfer shims in order to change the readings.
  2. In order to adjust the caster and the camber, loosen the upper control arm shaft-to-frame nuts (1). Add shims or remove shims (2) as required. Tighten the nuts. Check the toe after you change the caster and the camber.
  3. Caster- Transfer the shims from front to rear or from rear to front. The transfer of one shim from the rear bolt to the front bolt decreases positive caster.
    Fig 1: Loosening Upper Control Arm Shaft-To-Frame Nuts
    G01467610Courtesy of GENERAL MOTORS CORP.
  4. Camber-Change the shims at the front and the rear of the cross shaft. Add an equal number of shims at the front and the rear of the cross shaft. This decreases positive camber.
  5. A normal shim pack will leave at least two threads of the bolt exposed beyond the nut (1). The difference between the front shim pack and the rear shim pack must not exceed 10 mm (0.40 in). If you cannot meet these requirements, check for damage to the control arms and to related parts.
  6. Tighten the nut on the thinner shim pack first. This improves the shaft-to-frame clamping force. This also improves torque retention.

    Tighten 

    1. Tighten the nuts to 75 N.m (55 lb ft).
    Fig 2: Installing Shims To Adjust Camber
    G01467611Courtesy of GENERAL MOTORS CORP.