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Noise Diagnosis - Rear Suspension

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

DEFINITION: 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 next step. If no, see SYMPTOMS - SUSPENSION GENERAL DIAGNOSIS .
  2. Attempt to duplicate the condition. Road test the vehicle. Did you duplicate the condition? If yes, go to next step. If no, system is OK.
  3. Is the noise reactive to vehicle load or speed? If yes, go to next step. If no, go to step  6.
  4. Perform the following Inspections: Did you find and correct the condition? If yes, go to step  10. If no, go to next step.
  5. Inspect the rear wheel bearings. Refer to WHEEL BEARINGS DIAGNOSIS . If no, go to next step.
  6. Bounce the rear of the vehicle in order to duplicate the noise. Did you duplicate the noise? If yes, go to next step. If no, go to step  9.
    1. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
    2. Inspect the rear suspension components for looseness. Refer to FASTENER TIGHTENING SPECIFICATIONS .
    3. 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 next step.
  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 next step.
    1. Install the J-39570 Chassis Ear or equivalent. Refer to Figure.
    2. 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.
    3. Repair or replace any defective component as necessary.
    Did you find and correct the condition? If yes, go to next step. 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 back to step  3.
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