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

  1. Inspect the stabiliser bar, links, and insulators for wear or damage.
  2. Replace as necessary.
  3. • Refer to Stabilizer Shaft Replacement for Front Suspension and Stabilizer Shaft Replacement for Rear Suspension.
    • Refer to Stabilizer Shaft Insulator Replacement for Front Suspension and Stabilizer Shaft Insulator Replacement for Rear Suspension
    • Refer to Stabilizer Shaft Link Replacement for Front Suspension and Stabilizer Shaft Link Replacement for Rear Suspension.

Did you find and correct the condition?

Go to Step 10

Go to Step 4

4

  1. Inspect the front suspension control arms, caster arms, tie rods and ball joints for wear or damage. For ball joint inspection refer to Ball Joint Inspection .
  2. Repair as necessary.
  3. • Refer to Control Arm Replacement .

Did you find and correct the condition?

Go to Step 10

Go to Step 5

5

Inspect the wheel bearing for wear or damage. Refer to Front Wheel Hub Assembly Inspection and Rear Wheel Hub Assembly Inspection .

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

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

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

Go to Strategy Based Diagnosis in General Information.

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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