GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: The tire and wheel assembly bounces with a frequency directly related to the vehicle speed.

1

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

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Verify that the tires hop or that the vehicle handles poorly.

Is the customer's concern present?

Go to Step 3

System OK

3

Inspect the tires for uneven wear or damage. Refer to Tire Diagnosis - Irregular or Premature Wear in Tires and Wheels.

Do the tires require replacement?

Go to Step 7

Go to Step 4

4

Inspect the tires and wheels for missing wheel weights.

Are the wheel weights missing?

Go to Step 8

Go to Step 5

5

Inspect the tires and wheels for excessive runout. Refer to Tire and Wheel Assembly Runout Measurement - On-Vehicle in Vibration Diagnosis and Correction.

Does the tire and wheel have excessive runout?

Go to Step 7

Go to Step 6

6

Inspect the struts for wear or damage. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

Are the struts worn or damaged?

Go to Step 9

Go to Step 10

7

Replace the tire or the wheel as necessary. Refer to Tire Mounting and Dismounting in Tires and Wheels.

Did you complete the repair?

Go to Step 10

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8

Balance the tire and wheel assembly. Refer to Tire and Wheel Assembly Balancing - Off Vehicle in Vibration Diagnosis and Correction.

Did you complete the repair?

Go to Step 10

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9

Replace the strut if necessary. Refer to Strut Assembly Replacement in Front Suspension or to Strut Assembly Replacement in Rear Suspension.

Did you complete the repair?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3