Hummer H2. Manual — part 2190

Fig. 3: Wheel Mounting Surface Check
Courtesy of GENERAL MOTORS CORP.

1. Use a straight edge 203-229 mm (8-9 in) long. Place the straight edge on the wheel inboard mounting

surface. Try to rock the straightedge up and down within the mounting surface.

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

Fig. 4: Inspecting Wheel Mounting Surface
Courtesy of GENERAL MOTORS CORP.

2. Repeat this procedure on at least 3-4 different positions on the inboard mounting surface.

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The outer ring of the mounting surface normally is raised above everything inside the mounting
surface.

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The mounting surface will be raised above the outer ring if the wheel mounting surface has been
bent on a tire changer.

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If you can rock the straight edge, the mounting surface is bent and you must replace the wheel.

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

Fig. 5: Inspecting Mounting Wheel/Nut Holes
Courtesy of GENERAL MOTORS CORP.

3. Inspect the mounting wheel/nut holes for damage caused from over-torquing the wheel/nuts. Inspect for

collapsed wheel/nut bosses. Inspect for cracked wheel bosses.

NOTE:

The use of non-GM original equipment wheels may cause:

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Damage to the wheel bearing, the wheel fasteners and the wheel

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Tire damage caused by the modified clearance to the adjacent
vehicle components

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Adverse vehicle steering stability caused by the modified scrub
radius

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Damage to the vehicle caused by the modified ground clearance

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Speedometer and odometer inaccuracy

IMPORTANT:

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Replacement wheels must be equivalent to the original equipment
wheels in the following ways:

{

The load capacity

{

The wheel diameter

{

The rim width

{

The wheel offset

{

The mounting configuration

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2

4. Replace the wheel if the wheel is bent.

5. Replace the wheel if the wheel/nut boss area is cracked.

Identify steel wheels with a 2 or 3-letter code stamped into the rim near the valve stem. Aluminum wheels have
the code, the part number, and the manufacturer identification cast into the back side of the wheel.

RADIAL TIRE LEAD/PULL CORRECTION

Radial Tire Lead/Pull Correction

z

A wheel of the incorrect size or type may affect the following
conditions:

{

Wheel and hub-bearing life

{

Brake cooling

{

Speedometer/odometer calibration

{

Vehicle ground clearance

{

Tire clearance to the body and the chassis

Step

Action

Yes

No

DEFINITION: Lead/pull is the deviation of the vehicle from a straight path on a level road with no
pressure on the steering wheel.

1

Did you perform the Vehicle Leads/Pull diagnostic
table in Suspension General Diagnosis?

Go to Step 2

Go to Vehicle

Leads/Pulls in

Suspension General

Diagnosis

2

Road test the vehicle to verify the complaint.
Select a smooth level surface to perform the test.
Does the condition exist?

Go to Step 3

System OK

3

1. Cross-switch the front tire/wheel assemblies.

Refer to Tire and Wheel Removal and
Installation .

2. Road test the vehicle on a smooth level

surface.

Does the vehicle still lead/pull?

Go to Step 4

System OK

4

Does the vehicle lead/pull in the opposite
direction?

Go to Step 5

Go to Measuring

Wheel Alignment in

Wheel Alignment

5

1. Cross-switch the left front tire/wheel

assembly with the left rear tire/wheel
assembly. Refer to Tire and Wheel
Removal and Installation .

2. Road test the vehicle on a smooth level

2004 Hummer H2

2004 SUSPENSION Tires and Wheels - Hummer H2