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Noise Diagnosis - Rear Suspension

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Any noise from the rear of the vehicle that is induced by Vehicle Speed or Driving Terrain as related to the rear suspension.
NOTE: Required Tools: Chassis Ear (J-39570).
  1. Did you review the General Description and perform the necessary inspections? If so, go to next step. If not, go to SYMPTOMS - SUSPENSION GENERAL DIAGNOSIS .
  2. Verify that the rear suspension is noisy. Is the rear suspension noisy? If so, go to next step. If not, then system is okay.
  3. Shift the transmission into Park. Turn the ignition off. Bounce the rear of the vehicle in order to duplicate the noise. Is the complaint noise present? If so, go to next step. If not, go to step  5.
  4. Bounce the rear of the vehicle. Use a J 39570 Chassis Ear in order to locate the source of the noise. Repair or replace the suspect components as necessary. Did you complete the repair? If so, go to step  17.
  5. Raise and support the vehicle. Inspect all of the rear suspension components for any damage. Are any components damaged? If so, go to next step. If not, go to step  7.
  6. Repair or replace any damaged components. After repair, go to step  17.
  7. Inspect the tires for proper inflation. Correct the tire inflation pressure as necessary. Inspect the tires for unusual wear. Does either tire exhibit unusual tread wear? If so, go to next step. If not, go to  10.
  8. Rotate the tires. Road test the vehicle. Is the noise now emitted from the front of the vehicle? If so, go to next step. If not, go to  10.
  9. Replace the tires that are causing the noise. After repair, go to step  17.
  10. Ensure that the park brake cable and the spare tire are secured properly. Did you service any components? If so, go to step  17. If not, go to next step.
  11. Ensure that all of the wheel nuts are tightened to the correct specification. Tighten as necessary. Refer to FASTENER TIGHTENING SPECIFICATIONS in TIRES AND WHEELS. Did you tighten any of the wheel nuts? If so, go to step  17. If not, go to next step.
  12. Raise and support the vehicle. Use your hand to push and pull the shock absorbers. Is either shock absorber loose? If so, go to next step. If not, go to step  15.
  13. Inspect the shock absorber fasteners for the correct fastener tightening specification. Tighten as necessary. Refer to FASTENER TIGHTENING SPECIFICATIONS . Use your hands in order to push and pull the shock absorber. Is the shock absorber loose? If so, go to next step. If not, go to step  17.
  14. Replace the loose or worn shock absorber. Refer to SHOCK ABSORBER REPLACEMENT . After repair, go to step  17.
    CAUTION: Do not allow the J 39570 to contact any moving components.
  15. Use an on-vehicle wheel balancer in order to spin the rear wheels. Increase the wheel speed until the noise is at the most audible level. Use a J 39570 in order to locate the source of the noise. Does either wheel bearing exhibit excessive noise? If so, go to next step. If not, go to step  8.
  16. Replace the wheel bearings. Refer to WHEEL BEARING/HUB REPLACEMENT - REAR . After repair, go to next step.
  17. Operate the vehicle in order to verify the repair. Does the system operate normally? If so, then system is okay. If not, go to step  3.
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