Z Height Adjustment
- For vehicles equipped with a torsion bar suspension turn the bolt (1) that contacts the torsion arm as needed. One revolution of the bolt (1) into the nut increases the Z height by approximately 6.0 mm (0.2 in).
Courtesy of GENERAL MOTORS CORP.
- For vehicles without torsion bars, replace damaged or worn components as necessary.
- If these measurements are still out of specifications after adjustment or are not equipped with torsion bars, inspect for sagging front suspension or collision damage.