GM Service Manual Online
For 1990-2009 cars only

Checks

Action

DEFINITION: Vehicle ride unsteady and harsh.

Tire air pressure is too high

Deflate the tire to the correct pressure. Refer to Tire Inflation Description in Tires and Wheels.

Loose wheel bearings

Adjust the bearings. Refer to Wheel Bearing Adjustment in Front Suspension.

Camber adjustment incorrect (Negative camber contributes to road shock)

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

Weak or broken front spring

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

Loose suspension components

Inspect, repair, and adjust the components as necessary. Refer to Fastener Tightening Specifications in Front Suspension.