GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Important: It may be necessary to compare the results of the road test to a like vehicle that is operating properly.

Road test the vehicle in order to verify the customer complaint.

Does the vehicle ride too hard?

--

Go to Step 2

System OK

2

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 4

Go to Step 3

3

Inflate the tires to the correct pressure.

Has the repair been performed?

--

Go to Step 4

--

4

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

Has the inspection/repair been performed?

--

Go to Step 5

--

5

Inspect the following suspension components for wear or damage.

    • Front Coil Springs
    • Torsion Bars
    • Leaf Springs
    • Front and Rear Shock Absorbers

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

Are any of the components the worn or damaged?

--

Go to Step 6

Go to Step 7

6

Replace all of the worn or damaged components.

    • For torsion bar replacement, refer to Torsion Bar and Support Assembly Replacement in Front Suspension.
    • For front and rear 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 7

--

7

  1. Inspect the automatic level control system, if equipped. Refer to Automatic Level Control System Operation Check in Automatic Level Control.
  2. Repair as necessary.

Has the inspection/repair been performed?

--

Go to Step 1

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