Hummer H3. Manual — part 1580

RATTLE, CLUNK OR SHUDDER NOISE FROM THE POWER STEERING SYSTEM

Rattle, Clunk or Shudder Noise from the Power Steering System

Did you complete the repair?

Go to Step 11

10

Replace the power steering gear. Refer to
Steering Gear Replacement.
Did you complete the repair?

Go to Step 11

-

11

Operate the system in order to verify the
repair.
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

1

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

Go to Step 2

Go to
Symptoms -
Power Steering
System

2

Verify that a rattle, clunk or shudder noise
is present.
Is a rattle, clunk or shudder noise present?

Go to Step 3

System OK

3

Inspect the power steering hoses for
proper routing and clearance.
Is the routing or clearance of the power
steering hoses incorrect?

Go to Step 11

Go to Step 4

4

Inspect the engine drive belt for cracking
or excessive wear. Refer to Drive Belt
Falls Off and Excessive Wear
Diagnosis .
Is the drive belt cracked or excessively
worn?

Go to Step 12

Go to Step 5

5

Inspect the power steering pump pulley
for damage.
Is the power steering pump pulley
damaged?

Go to Step 13

Go to Step 6

6

Inspect the power steering pump and the
power steering mounting bracket/brace
for the proper installation. Refer to
Power Steering Pump Replacement
(LLR).

2007 Hummer H3

2007 STEERING Power Steering - H3

Is the power steering pump installation
incorrect?

Go to Step 14

Go to Step 7

7

Inspect the power steering gear for the
proper installation. Refer to Steering
Gear Replacement.
Is the power steering gear installation
incorrect?

Go to Step 15

Go to Step 8

8

Inspect the power steering gear rack
bearing preload for the proper adjustment.
Is the power steering gear rack bearing
preload adjustment incorrect?

Go to Step 16

Go to Step 9

9

Inspect the suspension.
Is the suspension worn?

Go to Step 17

Go to Step 10

10

Inspect the intermediate shaft.
Is the intermediate shaft worn?

Go to Step 18

Go to Step 3

11

Adjust or replace the power steering
hoses. Refer to Power Steering Gear
Inlet and Outlet Hose Replacement.
Did you complete the repair?

Go to Step 19

-

12

Replace the engine drive belt. Refer to
Drive Belt Replacement (Without
A/C) or Drive Belt Replacement (With
A/C) .
Did you complete the repair?

Go to Step 19

-

13

Replace the power steering pump pulley.
Refer to Power Steering Pump Pulley
Replacement (LLR).
Did you complete the repair?

Go to Step 19

-

14

Install the power steering pump correctly.
Refer to Power Steering Pump
Replacement (LLR).
Did you complete the repair?

Go to Step 19

-

15

Install the power steering gear correctly.
Refer to Steering Gear Replacement.
Did you complete the repair?

Go to Step 19

-

16

Adjust the power steering gear rack
bearing preload.
Did you complete the repair?

Go to Step 19

-

2007 Hummer H3

2007 STEERING Power Steering - H3

WHINE OR GROWL NOISE FROM THE POWER STEERING SYSTEM

Whine or Growl Noise from the Power Steering System

17

Replace the worn suspension components.
Refer to Diagnostic Starting Point -
Suspension General Diagnosis .
Did you complete the repair?

Go to Step 19

-

18

Replace the intermediate shaft. Refer to
Upper Intermediate Steering Shaft
Replacement or Lower Intermediate
Steering Shaft Replacement .
Did you complete the repair?

Go to Step 19

-

19

Operate the system in order to verify the
repair.
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

1

Did you review the Power Steering System
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 fluid for the
following indications of contamination:

Milky fluid - water

Brown Fluid - burnt

Debris in fluid - plastic or dirt

Is the fluid free of contamination?

Go to Step 5

Go to Step 4

4

Flush the power steering system. Refer to
Power Steering System Bleeding.
Did you complete the procedure?

Go to Step 11

Go to Step 5

Using the J 39570 Chassis Ear, inspect the
power steering gear for a whine or growl

2007 Hummer H3

2007 STEERING Power Steering - H3

POOR RETURN OF STEERING WHEEL

Poor Return of Steering Wheel

5

noise.
Is the noise present at the power steering
gear?

Go to Step 8

Go to Step 6

6

Using the J 39570 , inspect the power
steering pump for a whine or growl noise.
Is the noise present at the power steering
pump?

Go to Step 9

Go to Step 7

7

Using the J 39570 , inspect the power
steering hoses for a whine or growl noise.
Is the noise present at the power steering
hoses?

Go to Step 10

Go to Step 2

8

Replace the power steering gear. Refer to
Steering Gear Replacement.
Did you complete the repair?

Go to Step 11

-

9

Replace the power steering pump. Refer to
Power Steering Pump Replacement
(LLR).
Did you complete the repair?

Go to Step 11

-

10

Adjust the routing of the power steering
hoses.
Did you complete the repair?

Go to Step 11

-

11

Operate the system in order to verify the
repair.
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

DEFINITION: After completing a turn, extra steering input is required for the steering
wheel to return to center.

1

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

Go to Step 2

Go to Power
Steering System
Description and
Operation

2

Verify that poor return of the steering
wheel is present.
Does the system operate normally?

System OK

Go to Step 3

2007 Hummer H3

2007 STEERING Power Steering - H3