GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: Driver is unable to maintain consistent, predictable vehicle driving control in any direction.

1

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

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Verify that the directional stability is poor.

Does the system operate normally?

System OK

Go to Step 3

3

Inspect the front stabilizer for the following conditions:

    •  Stabilizer fasteners for looseness. Refer to Fastener Tightening Specifications.
    • Damaged Stabilizer. Refer to Stabilizer Shaft Replacement.
    •  Worn or damaged stabilizer bushings. Refer to Stabilizer Shaft Insulator Replacement.
    •  Damaged or missing stabilizer links. Refer to Stabilizer Shaft Link Replacement.

Did you find and correct the condition?

Go to Step 10

Go to Step 4

4

Inspect the following suspension and steering components for wear or damage:

    •  Control Arms, refer to Lower Control Arm Replacement.
    •  Ball Joints, refer to Ball Joint Inspection .

Did you find and correct the condition?

Go to Step 10

Go to Step 5

5

Inspect the wheel bearing. Refer to Wheel Bearings Diagnosis .

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

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

Did you find and correct the condition?

Go to Step 10

Go to Step 7

7

Inspect the steering column for looseness. Refer to Looseness in Steering Column.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

8

Inspect the steering gear mounting bolts for looseness. Refer to Fastener Tightening Specifications.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

9

Inspect and adjust the wheel alignment as necessary. Refer to Wheel Alignment Measurement.

Did you complete the alignment?

Go to Step 10

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10

Operate the vehicle in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3