DEFINITION: Any noise from the rear of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the rear suspension.

Did you review the system descriptions and perform the necessary inspections?

Go to Step 2

Go to  Symptoms - Suspension General Diagnosis

Important: Compare the vehicle to an identical vehicle in order to determine if the customer's concern is a characteristic of the vehicle.

Attempt to duplicate the condition. Road test the vehicle.

Did you duplicate the condition?

Go to Step 3

System OK

Is the noise reactive to vehicle load or speed?

Go to Step 4

Go to Step 6

1. Measure the tire pressure. Adjust as necessary. Refer to Tire Inflation Pressure Specifications.
2. Inspect the tires for wear. Repair as necessary. Refer to Tire Diagnosis - Irregular or Premature Wear.
3. Inspect the wheel nuts for looseness. Tighten as necessary. Refer to Fastener Tightening Specifications.

Did you find and correct the condition?

Go to Step 10

Go to Step 5

Inspect the rear wheel bearings. Repair as necessary. Refer to Wheel Bearings Diagnosis .

Did you find and correct the condition?

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Go to Step 6

Bounce the rear of the vehicle in order to duplicate the noise.

Did you duplicate the noise?

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Go to Step 9

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Inspect the rear suspension components for looseness. Tighten as necessary. Refer to Fastener Tightening Specifications.
3. Inspect the rear suspension components for damage. Repair as necessary.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

Inspect the rear shock absorbers. Repair as necessary. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

1. Install the J 39570 Chassis Ear or equivalent.
2. Bounce the rear of the vehicle. Use the J 39570 or equivalent in order to locate the source of the noise. If necessary, road test the vehicle.
3. Repair as necessary.

Did you find and correct the condition?

Go to Step 10

System OK

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3