HUMMER H2 2007 Owners Manual

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 446.
For any bulb changing procedure not listed in this
section, contact your dealer.
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.
Headlamps
To replace a headlamp bulb, do the following:
1. Open the hood. SeeHood Release on
page 400for more information.
2. Locate the affected headlamp on the inner
front portion of the hood.
3. Turn the bulb/
socket retainer
counterclockwise
to unlock the
bulb/socket.
You may prefer to unplug the electrical
connector before removing the bulb/socket.
If so, complete Step 5 before doing this step.
4. Pull the bulb/socket straight out from
the headlamp housing.
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5. Unplug the electrical
connector.
6. Push the new bulb socket into the headlamp
assembly making sure to align the splines
on the bulb socket with the splines in the
headlamp housing. Use care 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.Front Turn Signal and Parking Lamps
To replace a front turn signal or parking lamp bulb,
do the following:
1. Open the hood. SeeHood Release on
page 400for more information.
2. Locate the bulb you need to change.
3. Turn the bulb socket
counterclockwise
and remove it
from the lamp
housing.
4. Pull the bulb from the bulb socket.
5. Install the new bulb into the bulb socket.
6. Reinstall the bulb socket into the lamp housing
and turn it clockwise until it locks.
442

Daytime Running Lamps (DRL)
To replace a daytime running lamp bulb, do the
following:
1. Locate the lamp
assembly behind the
front bumper. It is
easiest to come
in from the side of
the vehicle
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. Install the new bulb into the bulb socket.
5. Reinstall the bulb socket into the lamp housing
and turn it clockwise until it locks.
Roof Marker Lamps
Corner Roof Marker Lamps
To replace one of these bulbs, do the following:
1. Remove the screw and lift off the lens.
2. Turn the bulb socket counterclockwise to
remove it.
3. Remove the bulb.
4. Install a new bulb into the socket.
5. Reinstall the socket into the lens and turn it
clockwise to lock it into place.
6. Hook the side of the lens with the hook end into
the notch rst and then tighten the screw.
443

Center Roof Marker Lamps
To replace one of these bulbs, do the following:
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. Remove the bulb from the bulb socket.
4. Install a new bulb into the bulb socket.
5. Place the hook end of the lamp in place on
one side and push the other end of the lamp
down until it locks in place.
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, do the following:
1. Open the liftgate or tailgate. SeeLiftgate
(SUV) on page 104orTailgate/Spare Tire
Carrier on page 108for more information.
444

2. If your vehicle is equipped with a taillamp
guard, you will need to remove it in order
to access the taillamp. To do this, remove the
four screws retaining the taillamp guard
making sure not to 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.
445

Your vehicle may have a taillamp in the bumper.
To replace it, do the following:
1. Locate the affected
taillamp which is
behind and
under the bumper.
2. Turn the bulb socket counterclockwise and
remove it from the lamp housing.
3. Remove the bulb from the bulb socket.
4. Install the new bulb into the bulb socket.
5. Reinstall the bulb socket into the lamp housing
and turn it clockwise to lock it.Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 3156K
Daytime Running Lamp (DRL) 4114K LCP
Front Turn Signal and
Parking Lamp4157K or 3157KX
Low-Beam and High-Beam
Headlamps9007
Rear Taillamp and Stoplamp 3057K
Rear Taillamp in Bumper 3057K
Rear Turn Signal Lamp 3156K
Roof Marker Lamp Center 168
Roof Marker Lamp Corner 194
For replacement bulbs not listed here, contact
your dealer.
446

Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear and cracking. SeeScheduled Maintenance
on page 517for more information.
Replacement blades come in different types and
are removed in different ways. For proper type and
length, seeNormal Maintenance Replacement
Parts on page 530.
To replace the windshield wiper blade assembly
do the following:
1. Lift the wiper arm and turn the blade until it is
facing away from the windshield.2. Push the release lever and slide the wiper
assembly toward the driver’s side of the
vehicle.
3. Install a new blade by reversing Steps 1 and 2.
447

Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your GM Warranty booklet
for details. For additional information refer to
the tire manufacturer’s booklet included with your
vehicle.
{CAUTION:
Poorly maintained and improperly used
tires are dangerous.
Overloading your vehicle’s tires can
cause overheating as a result of too
much friction. You could have an
air-out and a serious accident. See
Loading Your Vehicle on page 362.
CAUTION: (Continued)
CAUTION: (Continued)

Underinated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked when
your vehicle’s tires are cold. See
Inflation - Tire Pressure on page 456.
Overinated tires are more likely to be
cut, punctured, or broken by a sudden
impact — such as when you hit a
pothole. Keep tires at the
recommended pressure.
Worn, old tires can cause accidents.
If the tire’s tread is badly worn,
or if your vehicle’s tires have been
damaged, replace them.
448

Tire Sidewall Labeling
Useful information about a tire is molded into the
sidewall. The following illustrations are examples
of a typical P-Metric and a LT-Metric tire sidewall.(A) Tire Size:The tire size code is a combination
of letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction
type, and service description. See the “Tire Size”
illustration later in this section for more detail.
(B) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation):
The Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
Passenger (P-Metric) Tire
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(D) Tire Identication Number (TIN):The letters
and numbers following DOT code are the Tire
Identication Number (TIN). The TIN shows
the manufacturer and plant code, tire size, and
date the tire was manufactured. The TIN is molded
onto both sides of the tire, although only one
side may have the date of manufacture.
(E) Tire Ply Material:The type of cord and
number of plies in the sidewall and under the tread.
(F) Uniform Tire Quality Grading (UTQG):Tire
manufacturers are required to grade tires
based on three performance factors: treadwear,
traction, and temperature resistance. For more
information, seeUniform Tire Quality Grading on
page 462.
(G) Maximum Cold Ination Load
Limit:Maximum load that can be carried and the
maximum pressure needed to support that
load. For information on recommended tire
pressure seeInation - Tire Pressure on page 456
andLoading Your Vehicle on page 362.(A) Tire Size:The tire size code is a combination
of letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction
type, and service description. See the “Tire Size”
illustration later in this section for more detail.
Light Truck (LT-Metric) Tire
450