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Noise Diagnosis - Front Suspension (2003)

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Any noise emitted from the front of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the front suspension.
  1. Did you review the General Description and perform the necessary inspections? If yes, go to step  2. If no, go to SYMPTOMS - SUSPENSION GENERAL DIAGNOSIS .
  2. Compare this vehicle to an identical vehicle in order to determine if the customer's concern is a normal operating characteristic of the vehicle. Attempt to duplicate the noise. Road test the vehicle. Is the front suspension noisy? If yes, go to step  3. If no, system is OK.
  3. Shift the transmission into Park. Turn the ignition OFF. Bounce the front of the vehicle in order to duplicate the noise. Is the noise present? If yes, go to step  4. If no, go to step  5.
  4. Bounce the front of the vehicle. Use a J 39570 in order to locate the source of the noise. Repair or replace the suspect component as necessary. Did you complete the repair? If yes, go to step  25.
  5. Raise and support the vehicle. Inspect all of the front suspension components for any damage. Are any components damaged? If yes, go to step  6. If no, go to step  7.
  6. Repair any damaged components. Did you complete the repair? If yes, go to step  25.
  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 yes, go to step  8. If no, go to step  10.
  8. Rotate the tires. Refer to TIRE ROTATION in TIRES AND WHEELS article. Road test the vehicle. Is the noise now emitted from the rear of the vehicle? If yes, go to step  9. If no, go to step  10.
  9. Replace the tires that are causing the noise. Did you complete the repair? If yes, go to step  25.
  10. Ensure that the ball joints and steering linkage are lubricated, if applicable. Lubricate/replace as necessary. Did you service any components? If yes, go to step  25. If no, go to step  11.
  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 article. Did you tighten any wheel nuts? If yes, go to step  25. If no, go to step  12.
  12. Use your hands in order to push and pull the shock. Is the shock loose? If yes, go to step  13. If no, go to step  15.
  13. Inspect the shock fasteners for the correct fastener tightening specification. Tighten as necessary. Refer to FASTENER TIGHTENING SPECIFICATIONS in FRONT SUSPENSION article. Use your hand to push and pull the shock. Is the shock loose? If yes, go to step  14. If no, go to step  25.
  14. Replace the loose or worn shock. Refer to SHOCK ABSORBER REPLACEMENT in FRONT SUSPENSION article. Did you complete the repair? If yes, go to step  25.
  15. Use your hands in order to push and pull on the stabilizer shaft. Is the stabilizer shaft loose? If yes, go to step  16. If no, go to step  20.
  16. Inspect all of the stabilizer shaft fasteners. Tighten as necessary. Refer to FASTENER TIGHTENING SPECIFICATIONS in FRONT SUSPENSION article. Use your hands in order to push and pull on the stabilizer shaft. Is the stabilizer shaft loose? If yes, go to step  17. If no, go to step  25.
  17. Observe the location of the stabilizer shaft looseness. Is the looseness observed at the stabilizer shaft link? If yes, go to step  18. If no, go to step  19.
  18. Replace the stabilizer shaft link. Refer to STABILIZER SHAFT LINK REPLACEMENT in FRONT SUSPENSION article. Did you complete the repair? If yes, go to step  25.
  19. Replace the stabilizer shaft insulators and/or brackets. Refer to STABILIZER SHAFT INSULATOR REPLACEMENT in FRONT SUSPENSION article. Did you complete the repair? If yes, go to step  25.
  20. Inspect the control arms for looseness or movement. Is any looseness or movement observed? If yes, go to step  21. If no, go to step  23.
  21. Inspect the control arm fasteners for the correct fastener tightening specification. Refer to FASTENER TIGHTENING SPECIFICATIONS in FRONT SUSPENSION article. Tighten as necessary. Inspect the control arm for looseness. Is the control arm loose? If yes, go to step  22. If no, go to step  25.
  22. Replace any worn or loose control arm bushings. Refer to LOWER CONTROL ARM REPLACEMENT in FRONT SUSPENSION article. Did you complete the repair? If yes, go to step  25.
  23. Inspect the wheel bearings for looseness or noise. Refer to WHEEL BEARINGS DIAGNOSIS . Does either wheel bearing exhibit looseness or noise? If yes, go to step  24. If no, go to step  8.
  24. Replace the wheel bearing. Refer to WHEEL BEARING/HUB REPLACEMENT - FRONT in FRONT SUSPENSION article. Did you complete the repair? If yes, go to step  25.
  25. Operate the vehicle in order to verify the repair. Did you correct the condition? If yes, system is OK. If no, go to step  3.
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