GM Service Manual Online
For 1990-2009 cars only

    Important: Follow the manufacturer's instructions in order to install the alignment equipment.

  1. Jounce the front and the rear bumpers three times in order to normalize the suspension prior to measuring angles.
  2. Measure the alignment angles and record the readings.
  3. If the caster angles are not within the specified range, inspect for damaged suspension and steering components. Replace the components as necessary. Refer to Suspension Component Inspection in Front Suspension.