GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the diagnostic starting point?

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Verify the malfunction is present.

Does the system operate normally?

Go to Step 3

Go to Step 4

3

Test the vehicle under the same conditions that the customer reported.

Does the system operate normally?

System OK

Go to Step 4

4

Inspect the tires for the proper inflation pressure. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication.

Is the tire inflation pressure correct?

Go to Step 6

Go to Step 5

5

Inflate the tires to the correct pressure.

Has the repair been performed?

Go to Step 6

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6

  1. Inspect the vehicle trim height. Refer to Trim Height Inspection .
  2. Repair as necessary.

Has the inspection/repair been performed?

Go to Step 7

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7

Inspect the following suspension components for wear or damage.

    • Springs
    • Shock Absorbers

Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

Are any of the components the worn or damaged?

Go to Step 8

Go to Step 9

8

Replace all of the worn or damaged components.

    • For shock absorber replacement, refer to Shock Absorber Replacement in Front Suspension or Shock Absorber Replacement in Rear Suspension.
    • For spring replacement, refer to Front Coil Springs Replacement in Front Suspension or Leaf Spring Replacement in Rear Suspension.

Has the repair been performed?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3