GM Service Manual Online
For 1990-2009 cars only

Problem

Action

DEFINITION: Vehicle ride unsteady and harsh.

The tire air pressure is too high.

Deflate the tire to the correct pressure. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication.

A hub and wheel bearing is worn or loose.

Replace the hub and wheel bearing assembly.

    • For RWD, refer to Front Wheel Hub, Bearing, and Seal Replacement in Front Suspension.
    • For F4WD, refer to Front Wheel Hub, Bearing, and Seal Replacement in Front Suspension.

The camber adjustment is incorrect (Negative camber contributes to road shock).

Adjust camber. Refer to Wheel Alignment Measurement in Wheel Alignment.

The spring is broken or sagging (RWD).

Replace the spring. Refer to Front Coil Springs Replacement in Front Suspension.

The torsion bar is sagging (F4WD).

Adjust the torsion bar. Refer to Torsion Bar Replacement in Front Suspension.

The suspension components are loose.

  1. Inspect the components as needed.
  2. Repair the components as needed.
  3. Adjust the components as needed.

Refer to Fastener Tightening Specifications in Front Suspension.