GM Service Manual Online
For 1990-2009 cars only

Important: Review the system descriptions in order to familiarize yourself with the system functions. Refer to Front Suspension Description and Operation in Front Suspension and to Rear Suspension Description and Operation in Rear Suspension.

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the suspension system.
  2. Inspect the easily accessible or visible suspension components for obvious damage or conditions which could cause the symptom.
  3. Verify the tires are the proper size. Refer to Tire Placard in General Information.
  4. If the tires are not the proper size, replace the tires. Refer to Tire Mounting and Dismounting in Tires and Wheels.

  5. Measure the tire pressure. Adjust the tire pressure if necessary. Refer to Tire Placard in General Information.

Intermittent Conditions

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to the following symptom diagnostic procedure list in order to diagnose the symptom:

    •  Ride Diagnosis
    •  Vehicle Leads/Pulls
    •  Suspension Bottoms
    •  Memory Steer
    •  Poor Directional Stability
    •  Noise Diagnosis - Front Suspension
    •  Noise Diagnosis - Rear Suspension
    •  Ball Joint Inspection
    •  Suspension Strut and Shock Absorber Testing - On Vehicle
    •  Wheel Bearings Diagnosis
    •  Tire Diagnosis - Irregular or Premature Wear in Tires and Wheels
    •  Tire Diagnosis - Waddle Complaint in Tires and Wheels
    •  Wheel Mounting Surface Check in Tires and Wheels
    •  Radial Tire Lead/Pull Correction in Tires and Wheels