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

Perform the power steering test procedure in order to diagnose a hydraulic condition and repair or replace a component. Refer to Power Steering System Test .

Is there a hydraulic problem in the system?

Go to Step 10

Go to Step 4

4

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

Is the noise present at the power steering gear?

Go to Step 7

Go to Step 5

5

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

Is the noise present at the power steering pump?

Go to Step 8

Go to Step 6

6

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

Is the noise present at the power steering hoses?

Go to Step 9

Go to Step 3

7

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

Did you complete the repair?

Go to Step 10

--

8

Replace the power steering pump. Refer to Power Steering Pump Replacement .

Did you complete the repair?

Go to Step 10

--

9

Adjust the routing of the power steering hoses.

Did you complete the repair?

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3