wheel HUMMER H2 2004 Manual PDF

Page 389 of 472

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class″S″type chains
that are the proper size for your tires. Install them
on the rear axle tires and tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
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If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re driving,
especially if you maintain your tires properly. If air goes
out of a tire, it’s much more likely to leak out slowly.
But if you should ever have a “blowout,” here are a few
tips about what to expect and what to do:
If a front tire fails, the at tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel rmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use
in a skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop, well off the road if possible.{CAUTION:
Lifting a vehicle and getting under it to do
maintenance or repairs is dangerous without
the appropriate safety equipment and training.
The jack provided with your vehicle is
designed only for changing a at tire. If it is
used for anything else, you or others could be
badly injured or killed if the vehicle slips off
the jack. Use the jack provided with your
vehicle only for changing a at tire.
If a tire goes at, the next part shows how to use your
jacking equipment to change a at tire safely.
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Page 393 of 472

Changing a Flat Tire
If a tire goes at, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your
hazard warning ashers.
{CAUTION:
Changing a tire can be dangerous. The vehicle
can slip off the jack and roll over or fall on you
or other people. You and they could be badly
injured or even killed. Find a level place to
change your tire. To help prevent the vehicle
from moving:
1. Set the parking brake rmly.
2. Put the shift lever in PARK (P).
3. Turn off the engine and do not restart
while the vehicle is raised.
CAUTION: (Continued)
CAUTION: (Continued)
4. Do not allow passengers to remain in the
vehicle.
5. Put the wheel blocks at the front and rear
of the tire farthest away from the one
being changed. That would be the tire on
the other side, at the opposite end of the
vehicle.
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Page 394 of 472

The following steps will tell you how to use the jack and
change a tire.
Removing the Spare Tire and Tools
The equipment you’ll need is behind and to the side of
the driver’s side second row seat. To remove the
equipment, do the following:
1. Fold the driver’s side second row seat down. See
60/40 Split Bench Seat on page 1-8.
2. Turn the wingnut (A),
which holds the jack,
counterclockwise
to release the jack.
3. Turn the wingnut (B), which holds the jack tool kit,
counterclockwise to release it.Open the tool bag and you will nd the following tools
which you will use to remove the spare tire and at tire:
A. Jack Handle Extension (Used for Rear Flats Only)
B. Jack Handle
C. Wheel Wrench
D. Ratchet
E. Spanner Wrench
F. Locking Pin (If Equipped) Not used for tire changing
procedure. See “Power Winch Platform” underIf You
Are Stuck: In Sand, Mud, Ice or Snow on page 4-56.
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The spare tire and wheel blocks are stored in the rear
cargo area. Remove the tire cover to get to them.
A. Spare or Flat Tire
B. Receiver Extension (If Equipped) Not used for tire
changing procedure. See “Receiver Extension” under
If You Are Stuck: In Sand, Mud, Ice or Snow on
page 4-56.
C. Tire Retainer Plate
D. Nut
E. Wheel BlocksFollow the instructions to remove the wheel blocks and
spare tire:
1. Remove the wheel blocks from the tire retainer
plate by turning the wingnut counterclockwise.
2. Place the at end of the wheel wrench through the
hole in the spanner wrench.
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3. Place the end of the
spanner wrench on the
nut and then turn
the wheel wrench
counterclockwise to
loosen the nut holding
the tire to the
carrier.
4. Pull off the tire retainer plate and set it aside.
Remove the spare tire from the wheel carrier.
5. Put the spare tire near the at tire.
Use the art and text following to nish changing a
at tire.The tools you’ll be using include the jack (A), the wheel
blocks (B), the wheel wrench (C), jack handle
extension (D), the jack handle (E) and the ratchet (F).
Before proceeding, be sure to set the wheel
blocks (B) on the appropriate tire as shown previously.
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Removing the Flat Tire and Installing
the Spare Tire
1. To remove the center
cap, place the at end
of the wheel wrench
in the slot on the wheel
and gently pry the
center cap out.
2. Slide the ratchet onto the wheel wrench with the
DOWN mark facing you.
3. Turn the ratchet counterclockwise to loosen the
wheel nuts. Don’t remove them yet.
You will now need to jack the vehicle up using the
instructions following.
4. Assemble the jack and tools as follows:
Front Flat Tire:Attach the jack handle (E) with the
hook end connected to the u-hook/clevis on the
jack (A). Slide the ratchet (F) onto the jack handle (E)
with the UP mark facing you.
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Page 400 of 472

{CAUTION:
Raising your vehicle with the jack improperly
positioned can damage the vehicle and even
make the vehicle fall. To help avoid personal
injury and vehicle damage, be sure to t the
jack lift head into the proper location before
raising the vehicle.
6. Turn the ratchet clockwise to raise the vehicle.
Raise the vehicle far enough off the ground so
there is enough room for the spare tire to clear the
ground.7. Remove all the wheel
nuts and take off the
at tire.
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Page 401 of 472

8. Remove any rust or dirt
from the wheel bolts,
mounting surfaces
and spare wheel.
{CAUTION:
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
the places where the wheel attaches to the
vehicle. In an emergency, you can use a cloth
or a paper towel to do this; but be sure to use
a scraper or wire brush later, if you need to, to
get all the rust or dirt off.
{CAUTION:
Never use oil or grease on studs or nuts. If
you do, the nuts might come loose. Your wheel
could fall off, causing a serious accident.
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Page 402 of 472

9. After mounting the
spare, put the wheel
nuts back on with
the rounded end of the
nuts toward the
wheel.
Tighten each wheel nut by hand. Then use the
ratchet/wheel wrench to tighten the nuts, with the
UP mark facing you, clockwise until the wheel
is held against the hub. You will not be tightening
the nuts fully yet.10. Lower the vehicle by turning the ratchet
counterclockwise, with the DOWN mark facing you.
Lower the jack completely.
Front PositionRear Position
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