GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Power Steering System General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Power Steering System

2

Verify that a whine or growl noise is present.

Is a whine or growl noise present?

Go to Step 3

System OK

3

Inspect the power steering gear for looseness and/or worn bushings.

Is the steering gear loose or the bushings worn?

Go to Step 6

Go to Step 4

4

Inspect the power steering assist motor for a whine or growl noise using J 39570 Chassis Ear.

Is the noise present at the power steering motor?

Go to Step 7

Go to Step 5

5

Inspect the power steering gear for a whine or growl noise using J 39570 .

Is the noise present at the power steering gear?

Go to Step 8

Go to Step 3

6

Tighten the power steering gear fasteners or replace the power steering gear due to worn bushings. Refer to

Did you complete the repair?

Go to Step 9

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7

Replace the power steering assist motor. Refer to Power Steering Pump Replacement .

Did you complete the repair?

Go to Step 11

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8

Replace the power steering gear. Refer to Steering Gear Replacement .

Did you complete the repair?

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