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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 574 (Suspension System General Diagnosis) >> Diagnostic Information And Procedures >> Noise Diagnosis - Rear Suspension

Noise Diagnosis - Rear Suspension

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 rear of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the rear 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. Attempt to duplicate the condition. Road test the vehicle. Did you duplicate the condition? If yes, go to step  3. If no, system is OK.
  3. Is the noise reactive to vehicle load or speed? If yes, go to step  4. If no, go to step  6.
  4. Perform the following inspections:
    • Inspect and adjust the tire inflation.
    • Inspect for unusual tire wear. Refer to VIBRATION ANALYSIS - TIRE AND WHEEL in VIBRATION DIAGNOSIS AND CORRECTION in TIRES AND WHEELS article.
    • Inspect the wheel nuts for looseness. Refer to FASTENER TIGHTENING SPECIFICATIONS in TIRE AND WHEELS article.
    Did you find and correct the condition? If yes, go to step  10. If no, go to step  5.
  5. Inspect the rear wheel bearings. Refer to WHEEL BEARINGS DIAGNOSIS . Did you find and correct the condition? If yes, go to step  10. If no, go to step  6.
  6. Bounce the rear of the vehicle in order to duplicate the noise. Did you duplicate the noise? If yes, go to step  7. If no, go to step  9.
  7. Raise the vehicle. Inspect the rear suspension components for looseness. Refer to FASTENER TIGHTENING SPECIFICATIONS . Inspect the rear suspension components for damage and repair as necessary. Did you find and correct the condition? If yes, go to step  10. If no, go to step  8.
  8. Inspect the rear shock absorber. Refer to STRUTS OR SHOCK ABSORBERS ON-VEHICLE TESTING . Did you find and correct the condition? If yes, go to step  10. If no, go to step  9.
  9. Install the J 39570 Chassis Ear or equivalent. Bounce the rear of the vehicle, using the J 39570 or equivalent, in order to locate the source of the noise. If necessary, road test the vehicle. Repair or replace any defective component as necessary. Did you find and correct the condition? If yes, go to step  10. If no, system is OK.
  10. Operate the system 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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