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Noise Diagnosis - Rear Suspension

WARNING: This page is about a different car, the 2003 GMC Jimmy and 2003 Chevrolet Blazer. 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, 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 next step. If no, system is okay.
  3. Is the noise reactive to vehicle load or speed? If yes, go to next step. If no, go to step  6.
  4. Inspect and adjust the tire Inflation. Inspect for unusual tire wear. Inspect the wheel nuts for looseness. Did you find and correct the condition? If yes, go to step  10. If no, go to next step.
  5. Inspect the rear axle for rear axle noises. Did you find and correct the condition? If yes, go to step  10. 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.
  7. Raise the vehicle. Inspect the rear suspension components for looseness and tighten as necessary. 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. Did you complete the inspection? If yes, go to step  10. If no, go to next step.
  9. Install the J 39570 Chassis Ear or equivalent. See SPECIAL TOOLS . 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 next step. If no, system is okay.
  10. Operate the system in order to verify the repair. Did you correct the condition? If yes, system is okay. If no, go to step  3.
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