2009 HUMMER H2 Owners Manual

To disconnect the jumper cables from both vehicles do
the following:
1. Disconnect the black negative (−) cable from the
vehicle that had the dead battery.
2. Disconnect the black negative (−) cable from the
vehicle with the good battery.
3. Disconnect the red positive (+) cable from the
vehicle with the good battery.
4. Disconnect the red positive (+) cable from the other
vehicle.
5. Return the positive (+) remote terminal cover, if
equipped, to its original position.Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle uid
unless you suspect there is a leak or you hear an
unusual noise. A uid loss could indicate a problem.
Have it inspected and repaired.
All axle assemblies are lled by volume of uid during
production. They are not lled to reach a certain level.
When checking the uid level on any axle, variations in
the readings can be caused by factory ll differences
between the minimum and the maximum uid volume.
Also, if a vehicle has just been driven before checking the
uid level, it may appear lower than normal because uid
has traveled out along the axle tubes and has not drained
back to the sump area. Therefore, a reading taken ve
minutes after the vehicle has been driven will appear to
have a lower uid level than a vehicle that has been
stationary for an hour or two. Remember that the rear
axle assembly must be supported to get a true reading.
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How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.
When the differential is cold, the proper level is from
5/8 inch to 1-5/8 inch (15 mm to 40 mm) below the
bottom of the ller plug hole, located on the rear axle.
Add only enough uid to reach the proper level.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. SeeRecommended Fluids
and Lubricants on page 6-13.
Four-Wheel Drive
Transfer Case
It is not necessary to regularly check transfer case uid
unless you suspect there is a leak or you hear an
unusual noise. A uid loss could indicate a problem.
Have it inspected and repaired.
Refer to the Maintenance Schedule to determine how
often to change the lubricant. SeeScheduled
Maintenance on page 6-4.
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How to Check Lubricant
A. Filler Plug
B. Drain Plug
1. Remove the ller plug (A). The uid level should be
just below the bottom of the ller plug hole located
on the transfer case. To get an accurate reading,
the vehicle should be on a level surface.2. Add uid if necessary.
Refer to the Maintenance Schedule to determine
what kind of lubricant to use. SeeRecommended
Fluids and Lubricants on page 6-13.
3. Reinstall the ller plug. Use care not to overtighten
the ller plug.
Front Axle
When to Check and Change Lubricant
It is not necessary to regularly check front axle uid
unless you suspect there is a leak or you hear an
unusual noise. A uid loss could indicate a problem.
Have it inspected and repaired.
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How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.
When the differential is cold, the proper level is from
about 1/4 inch (6 mm) to about 3/8 inch (10 mm) below
the ller plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. SeeRecommended Fluids
and Lubricants on page 6-13.
Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-55.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
Halogen Bulbs
{CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and follow
the instructions on the bulb package.
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Headlamps
To replace a headlamp bulb:
1. Open the hood. SeeHood Release on page 5-12.
2. Locate the affected headlamp on the inner front
portion of the hood.
3. Turn the bulb socket
counterclockwise and
pull it out of the
headlamp assembly.4. Unplug the electrical
connector.
5. Pull the old bulb straight out of the bulb socket.
6. Push the new bulb socket into the headlamp
assembly aligning the bulb socket with the
headlamp assembly. Do not to touch the bulb with
your ngers or hands.
7. Turn the bulb socket retainer clockwise to lock it
into place.
8. Plug in the electrical connector.
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Front Turn Signal and Parking
Lamps
To replace a front turn signal or parking lamp bulb:
1. Open the hood. SeeHood Release on page 5-12.
2. Turn the bulb socket
counterclockwise and
remove it from the lamp
housing.
3. Pull the bulb from the bulb socket.
4. Push the new bulb straight into the socket until it
clicks.
5. Turn the bulb socket clockwise until it locks into
place.
Daytime Running Lamps (DRL)
To replace a daytime running lamp bulb:
1. Locate the lamp
assembly behind the
front bumper through
the wheel opening.
2. Turn the bulb socket counterclockwise and remove
it from the lamp housing.
3. Remove the bulb from the bulb socket.
4. Push the new bulb straight in the bulb socket until it
clicks.
5. Reinstall the bulb socket into the lamp housing and
turn it clockwise until it locks.
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Roof Marker Lamps
Corner Roof Marker Lamps
To replace one of these bulbs:
1. Remove the screw and lift off the lens.
2. Turn the bulb socket counterclockwise pull it out of
the lamp assembly.
3. Pull the old bulb straight out of the bulb socket.
4. Push the new bulb straight into the bulb socket until
it connects.5. Turn the bulb socket clockwise into the lamp
assembly until it locks into place.
6. Place the side of the lens with the slotted end into
the notch rst and then tighten the screw.Center Roof Marker Lamps
To replace one of these bulbs:
1. Push in on the notch with a at tool and pull the
lamp out.
2. Turn the bulb socket counterclockwise and remove
it from the lamp housing.
3. Pull the old bulb straight out of the bulb socket.
4. Push the new bulb straight into the bulb socket until
it connects.
5. Place the slotted end of the lamp in place on one
side and push the other end of the lamp down until
it locks in place.
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Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
A. Stoplamp/Taillamp
B. Turn Signal Lamp
C. Back-Up Lamp
To replace one of these bulbs:
1. Open the liftgate or tailgate. SeeLiftgate (SUV) on
page 2-13orTailgate/Spare Tire Carrier on
page 2-16.
2. If the vehicle has the taillamp guard, remove the
four retaining screws. Do not remove the plastic
retainers.3. Remove the two
screws from the rear
lamp assembly
and remove the rear
lamp assembly.
4. Turn the bulb socket counterclockwise to remove it
from the taillamp housing.
5. Pull the bulb straight out from the socket.
6. Press a new bulb into the socket, insert it into the
taillamp housing and turn the socket
counterclockwise until it is locked in place.
7. Reinstall the rear lamp assembly and tighten the
screws.
8. Reinstall the taillamp guard by lining up the guard
with the holes in vehicle. Then install and tighten
the four screws.
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