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Z Height Measurement

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The Z height dimension measurement determines the proper ride height for the front end of the vehicle. There is no adjustment procedure. Repair may require replacement of suspension components.
  1. Lift the front bumper of the vehicle up about 1.5" (38 mm).
  2. Gently remove your hands. Let the vehicle settle.
  3. Repeat this operation for a total of 3 times.
  4. Measure from the pivot bolt center line down to the lower corner of the lower ball joint in order to obtain the Z height measurement. See Fig 1.
  5. Push the front bumper of the vehicle down about 1.5" (38 mm).
  6. Gently remove your hands.
  7. Allow the vehicle to settle into position.
  8. Repeat the jouncing operation 2 more times for a total of 3 times.
  9. Measure the Z dimension.
  10. The true Z height dimension number is the average of the high and the low measurements.
Fig 1: Obtaining Z Height Measurement
G00372173Courtesy of GENERAL MOTORS CORP.
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