Z Height Adjustment

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Torsion Bar Suspension Adjustment Bolt

Courtesy of GENERAL MOTORS CORP.

For vehicles equipped with a torsion bar suspension, turn the bolt (1) that contacts the torsion bar adjusting arm as needed.
For vehicles without torsion bars, replace worn or damaged components as necessary.