ECU HUMMER H2 2007 Workshop Manual

Adjusting the Crossrails
Adjust the crossrails to t your load by doing the
following:
1. Loosen the lock knobs on the crossrail
supports by turning the knobs
counterclockwise. Only loosen them enough
to allow the crossrails to slide easily.2. Slide the crossrails to the desired position,
being sure to align the lines in the side rails
with the arrows on the crossrail supports.
3. Tighten the lock knobs and then try to move
the crossrails back and forth to be sure that
they do not move.
4. Once you load the cargo onto the crossrails,
secure it by tying it down to the crossrail
support cargo tie-down loops. Do not
load cargo directly on the roof of your vehicle.
Be sure you do not cover the roof marker
lamps or the Center-High-Mounted
Stoplamp (CHMSL), if your vehicle has this
feature, with cargo.
To prevent damage or loss of cargo check now and
then to make sure the luggage and cargo are still
securely fastened and the crossrails are tight.
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2. Pull the end cap
straight out from the
crossrail.
3. Peel back the rub strip from the crossrail.
4. Slide the accessory you are using into
the crossrail channel and secure it as
the accessory instructions direct.
5. Place the crossrail endcap back on and lock it
with the key.You will not be using the rub strip when using
crossrail accessories. When you remove any
crossrail accessory, be sure to reinstall the rub
strip. To do this, press the rub strip in place until it
seats into the channel of the crossrail.
Rear Seat Armrest
Your vehicle is equipped with a rear
armrest/cupholder.
To open it, pull up and then out on the tab,
located at the top center of the armrest, and pull
the armrest down.
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Cargo Tie Downs (SUT)
There are four oval shaped openings (A) in the
cargo bed that allow access to four tie downs. You
can use these tie downs to secure cargo.
All-Weather Cargo Area
Your vehicle has features to help it resist the
elements and protect cargo inside the cargo area.
Even when the water management system is
working properly and the cover system is on, there
may be some instances (heavy rains, automated
car washes, etc.) when water may be present
in the drain holes. See “Cargo Area Floor Drains”
later in this section for more information.
Removal and Cleaning
To ensure that the water management system
performs properly, be sure that the midgate,
tailgate and cover system are fully closed and that
each element of the water management system
is clean and not blocked with debris. Follow
the instruction given next in this section for the
proper procedures on cleaning each item of
the water management system.
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The cargo mat has cutouts for the drains. You can
ush the drains through the cutouts, but if the
cargo area is extremely dirty you can lift up the
edges of the cargo oor mat or take the whole mat
out and ush the drains with water. The drain
grates can be removed to clear any debris that has
accumulated in the drain.
Tonneau Cover (SUT)
{CAUTION:
If you remove the tonneau cover, do not
store it in the vehicle without securing it
to the vehicle. An improperly stored
tonneau cover could be thrown about the
vehicle during a collision or sudden
maneuver. You or others could be injured.
When you put the cover back on, always
be sure that it is securely reattached.
Your vehicle may have a hard tonneau cover, you
can use it to cover items in the cargo area of
your vehicle.Your tonneau cover will have two lock cylinders
on it. One lock cylinder is to secure the cover
closed and the other lock cylinder will allow you to
secure the tailgate closed.
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Traction Off Light...................................... 212
Engine Coolant Temperature Gage............ 213
Transmission Temperature Gage............... 213
Malfunction Indicator Lamp........................ 215
Oil Pressure Gage..................................... 218
Security Light............................................ 219
Cruise Control Light.................................. 220
Highbeam On Light................................... 220
Tow/Haul Mode Light................................ 220
Fuel Gage................................................. 221
Low Fuel Warning Light............................ 221
Driver Information Center (DIC).................. 222
DIC Operation and Displays...................... 222
DIC Warnings and Messages.................... 226
DIC Vehicle Customization........................ 234Audio System(s)......................................... 241
Setting the Time........................................ 243
Radio with Cassette and CD..................... 243
Radio with Six-Disc CD............................. 256
XM Radio Messages................................. 269
Navigation/Radio System........................... 271
Rear Seat Entertainment System............... 271
Rear Seat Audio (RSA)............................. 294
Theft-Deterrent Feature............................. 295
Audio Steering Wheel Controls.................. 296
Radio Reception........................................ 297
Care of the Cassette Tape Player............. 297
Care of Your CDs and DVDs.................... 299
Care of the CD and DVD Player............... 300
Fixed Mast Antenna.................................. 300
XM™ Satellite Radio Antenna System....... 300
Chime Level Adjustment............................ 300
Section 3 Instrument Panel
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{CAUTION:
If the airbag readiness light ever comes
on when you have turned off the airbag, it
means that something may be wrong with
the airbag system. The right front
passenger’s airbag could inate even
though the switch is off. If this ever
happens, do not let anyone whom the
national government has identied as a
member of a passenger airbag risk group
sit in the right front passenger’s position
(for example, do not secure a rear-facing
child restraint in the right front
passenger’s seat) until you have your
vehicle serviced. SeeAirbag Off Switch on
page 84, for more on this, including
important safety information.
Charging System Light
The charging system
light will come on briey
when the ignition is on,
but the engine is not
running, as a check to
show you it is working.
It should go out once the engine is running. If it
stays on, or comes on while you are driving,
you may have a problem with the charging system.
It could indicate that you have problems with a
generator drive belt, or another electrical problem.
Have it checked right away. Driving while this
light is on could drain the battery.
When this light comes on the DIC will also display
the SERVICE BATTERY CHARGING SYSTEM
message. SeeDIC Warnings and Messages
on page 226for more information.
If you must drive a short distance with the light on,
be certain to turn off all your accessories, such
as the radio and air conditioner.
209

A reading in the low pressure zone may be
caused by a dangerously low oil level or some
other problem causing low oil pressure. Check
your oil as soon as possible. SeeEngine Oil on
page 404.
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others could
be burned. Check your oil as soon as
possible and have your vehicle serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
Security Light
This light will come on
briey when you turn
the key toward START.
The light will stay on
until the engine starts.
If the light ashes, the Passlock
®system has
entered a tamper mode. If the vehicle fails to start,
seePasslock
®on page 118.
If the light comes on continuously while driving
and stays on, there may be a problem with
the Passlock
®system. Your vehicle will not be
protected by Passlock®, and you should see your
dealer.
Also, seeContent Theft-Deterrent on page 116for
additional information regarding the security light.
219

Radio Display Message Condition Action Required
No Info Category Name
not availableNo category information is available at this time on this
channel. The system is working properly.
No Info No Text/Informational
message availableNo text or informational messages are available at this time
on this channel. The system is working properly.
Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
XM Locked Theft lock active The XM™ receiver in the vehicle may have previously been
in another vehicle. For security purposes, XM™ receivers
cannot be swapped between vehicles. If this message is
received after having your vehicle serviced, check with
your dealer.
Radio ID Radio ID label (channel 0) If tuned to channel 0, this message alternates with the
XM™ Radio 8 digit radio ID label. This label is needed to
activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
could be a receiver fault. Consult with your dealer.
Chk XMRcvr Hardware failure If this message does not clear within a short period of time,
the receiver could have a fault. Consult with your dealer.
270

Before You Go Off-Roading
There are some things to do before you go out.
For example, be sure to have all necessary
maintenance and service work done. Check to
make sure all underbody shields are properly
attached. Remove any removable side steps.
SeeAssist Steps on page 338. Make sure any
equipment you may need — rst aid kit, cell phone,
ashlight, etc. — is securely stored in the vehicle.
Be sure you read all the information about your
four-wheel-drive vehicle in this manual. Is there
enough fuel? Is the spare tire fully inated? Are the
uid levels up where they should be? What are the
local laws that apply to off-roading where you will be
driving? If you do not know, you should check with
law enforcement people in the area. Will you be on
someone’s private land? If so, be sure to get the
necessary permission.
Loading Your Vehicle for Off-Road
Driving
{CAUTION:
Cargo on the load oor piled higher
than the seatbacks can be thrown
forward during a sudden stop. You or
your passengers could be injured.
Keep cargo below the top of the
seatbacks.
Unsecured cargo on the load oor can
be tossed about when driving over
rough terrain. You or your passengers
can be struck by ying objects.
Secure the cargo properly.
Heavy loads on the roof raise the
vehicle’s center of gravity, making it
more likely to roll over. You can be
seriously or fatally injured if the
vehicle rolls over. Put heavy loads
inside the cargo area, not on the roof.
Keep cargo in the cargo area as far
forward and low as possible.
318

There are some important things to remember
about how to load your vehicle.
The heaviest things should be on the load
oor and forward of your rear axle. Put
heavier items in the rear area, as far forward
as you can.
Be sure the load is secured properly, so
driving on the off-road terrain does not
toss things around.
You will nd other important information in this
manual. SeeLoading Your Vehicle on page 362
andTires on page 448.
Environmental Concerns
Off-road driving can provide wholesome and
satisfying recreation. However, it also raises
environmental concerns. We recognize these
concerns and urge every off-roader to follow these
basic rules for protecting the environment:
Always use established trails, roads, and areas
that have been specially set aside for public
off-road recreational driving; obey all
posted regulations.
Avoid any driving practice that could damage
the environment — shrubs, owers, trees,
grasses — or disturb wildlife. This includes
wheel-spinning, breaking down trees, or
unnecessary driving through streams or over
soft ground.
Always carry a litter bag — make sure all
refuse is removed from any campsite
before leaving.
Take extreme care with open res where
permitted, camp stoves, and lanterns.
Never park your vehicle over dry grass or
other combustible materials that could
catch re from the heat of the vehicle’s
exhaust system.
319