Tire jack HUMMER H3 2006 Owners Manual

Your spare tire carrier is behind the tailgate. If your
hitch extension is too short, the spare tire may interfere
with trailer coupling or trailer tongue jack operation
on some types of trailers.
After you’ve loaded your trailer, weigh the trailer
and then the tongue, separately, to see if the weights
are proper. If they aren’t, you may be able to get
them right simply by moving some items around in
the trailer.
Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inated to the upper limit
for cold tires. You’ll nd these numbers on the
Certication label at the rear edge of the driver’s door or
seeLoading Your Vehicle on page 4-52. Then be
sure you don’t go over the GVW limit for your vehicle,
or the GAWR, including the weight of the trailer tongue.
If you use a weight distributing hitch, make sure you
don’t go over the rear axle limit before you apply
the weight distribution spring bars.
Hitches
It’s important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are
a few reasons why you’ll need the right hitch.
Weight-Distributing Hitches and Weight
Carrying Hitches
When using a weight-distributing hitch, the hitch must
be adjusted so that the distance (A) remains the
same both before and after coupling the trailer to the
tow vehicle.(A) Body-to-Ground Distance (B) Front of Vehicle
4-63

If a Tire Goes Flat
It is unusual for a tire to blowout while you are driving,
especially if you maintain your vehicle’s tires properly.
If air goes out of a tire, it is 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 would
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 the
jacking equipment to change a at tire safely.
5-72

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 an automatic transmission shift lever
in PARK (P), or shift a manual
transmission to FIRST (1) or REVERSE (R).
CAUTION: (Continued)
CAUTION: (Continued)
3. If you have a four-wheel-drive vehicle,
be sure the transfer case is in a drive
gear – not in NEUTRAL.
4. Turn off the engine and do not restart
while the vehicle is raised.
5. Do not allow passengers to remain in the
vehicle.
To be even more certain the vehicle will not
move, put 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.
5-73

When you have a at tire, you will rst need to set up
the wheel blocks before changing it. They are located in
the tool bag, in the swing-gate. SeeRemoving the
Spare Tire and Tools on page 5-75for more information.
To use the wheel blocks,
lift the wheel block as
shown and lock into place.Then, use the following as a guide to assist you in the
placement of the wheel blocks.
The following information will tell you next how to use
the jack and change a tire.
5-74

Removing the Spare Tire and Tools
The equipment you will need is located in the
swing-gate, behind a cover. To remove the equipment,
do the following:
1. Open the swing-gate. SeeSwing-gate on page 2-9
for more information.
2. Remove the cover by lifting the two latches.
3. Turn the wing nut counterclockwise to release the
jack tool bag and jack.
4. Remove the tool bag and jack from its compartment.5. Undo the straps that secure the jack tool bag to
the jack.
6. Open the tool bag and you will nd the following
tools, which you will use to remove the spare tire
and at tire:
A. Wheel Wrench
B. Jack Handle
ExtensionsC. Jack Handle
D. Jack
E. Wheel Blocks
5-75

Removing the Flat Tire and
Installing the Spare Tire
1. Remove the center cap
by placing the at end
of the wheel wrench
in the slot on the wheel
and gently pry the
center cap out.
2. Turn the wheel wrench
counterclockwise to
loosen the wheel nuts.
Do not remove
them yet.If your vehicle has locking lug nuts, the key is
supplied in the tool bag. Use the key along with
the wheel wrench to remove the wheel nuts
from the tire.
You will now need to jack up the vehicle using the
instructions following.
A. Front Position - Lower Control Arm
B. Rear Position - Lower Axle
3. Locate the vehicle’s jacking positions (A and B).
Jacking Locations (Overall View)
5-77

4. Assemble the jack and tools as follows:
Front Tire Flat:If the at tire is on a front tire of
the vehicle, you will need to use the jack handle and
both jack handle extensions. Attach the wheel
wrench to the jack handle extension. Attach the jack
handle to the jack. Position the jack on the front
lower control arm along the bar that runs front
to back. Turn the wheel wrench 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.Refer to the graphic above to locate the placement of
the jack if the at tire is on the rear of the vehicle. Front Position
Rear Positions
5-78

Rear Tire Flat:You will need to use the jack
handle and both jack handle extensions. Attach the
wheel wrench to the jack extensions. Attach the
jack handle to the jack. Align the jack under the rear
axle. Turn the wheel wrench 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.5. Turn the wheel wrench clockwise to raise the jack
head to the lifting point.
{CAUTION:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack you
could be badly injured or killed. Never get under
a vehicle when it is supported only by a jack.
{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.
5-79

10. Tighten each wheel nut by hand. Then use the
wheel wrench to tighten the nuts until the wheel
is held against the hub.
11. Turn the wheel wrench counterclockwise to lower
the vehicle. Lower the jack completely.
{CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to come loose
and even come off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new GM original equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to the
proper torque specication. SeeCapacities
and Specifications on page 5-102for wheel nut
torque specication.Notice:Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque specication. SeeCapacities and
Specifications on page 5-102for the wheel nut
torque specication.
12. Tighten the nuts rmly
in a crisscross
sequence as shown by
turning the wheel
wrench clockwise.
13. When you install the wheel and tire, you must also
reinstall the center cap. Place the cap on the wheel
and tap it into place until it sits ush with the wheel.
5-81

Storing a Flat or Spare Tire and Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone.
Store all these in the proper place.
Use the art and text following to help you store the spare
or at tire back into its proper spot when you are done.
To store the at or spare tire on the spare tire mount,
do the following:
1. Slide the at or spare tire onto the swing-gate.
In order to store the at or the spare tire, you
may need someone to assist you.
2. Reinstall the nuts to retain the at or spare tire.
3. Tighten the nuts by hand.
{CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to come loose
and even come off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new GM original equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to the
proper torque specication. SeeCapacities
and Specifications on page 5-102for wheel nut
torque specication.
5-82