GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Important: Verify the vehicle suspension package RPO.

Verify that the ride is too soft or too hard.

Does the vehicle ride normally?

System OK

Go to Step 3

3

Check the tire inflation and adjust to specifications. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label.

Did you adjust the tire pressure?

Go to Step 7

Go to Step 4

4

Inspect the vehicle trim height. Refer to Trim Height Inspection.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

5

Inspect the following suspension components for wear or damage.

    • The strut and shock absorbers--Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6

Perform the Symptoms - Automatic Level Control.

Did you complete the procedure?

Go to Step 7

--

7

Drive the vehicle in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3