HUMMER H3 2007 Owners Manual

Running the Engine While Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust
into your vehicle. See the earlier caution
underEngine Exhaust on page 120.
Also, idling in a closed-in place can let
deadly carbon monoxide (CO) into your
vehicle even if the climate control fan is at
the highest setting. One place this can
happen is a garage. Exhaust — with
CO — can come in easily. NEVER park in
a garage with the engine running.
Another closed-in place can be a blizzard.
SeeWinter Driving on page 281.
{CAUTION:
It can be dangerous to get out of your
vehicle if the automatic transmission shift
lever is not fully in PARK (P) with the
parking brake rmly set. Your vehicle can
roll. Do not leave your vehicle when the
engine is running unless you have to. If
you have left the engine running, the
vehicle can move suddenly. You or others
could be injured. To be sure your vehicle
will not move, even when it is on fairly
level ground, always set the parking brake
and move the automatic transmission
shift lever to PARK (P), or the manual
transmission shift lever to NEUTRAL.
Follow the proper steps to be sure your vehicle will
not move. SeeShifting Into Park (P) (Automatic
Transmission) on page 117andParking Your
Vehicle (Manual Transmission) on page 119.
If you are pulling a trailer with your vehicle, see
Towing a Trailer on page 297.
121

Mirrors
Automatic Dimming Rearview Mirror
with OnStar
®, Compass and
Temperature Display
Your vehicle may have this feature. When on, the
automatic dimming mirror dims to the proper level
to minimize glare from lights behind you after dark.
The mirror has a dual display in the upper right
corner of the mirror face that shows the compass
reading and the outside temperature.
Control buttons for the OnStar
®system are at the
bottom of the mirror. SeeOnStar®System on
page 129for more information about the services
OnStar
®provides.
P(On/Off):This is the on/off button.
Temperature and Compass Display
Press the on/off button, located to the far
left, briey to turn the compass/temperature
display on or off.
If the display reads CAL, the compass needs to
be calibrated. For more information, see “Compass
Calibration” following.
To adjust between Fahrenheit and Celsius, do the
following:
1. Press and hold the on/off button for
approximately four seconds until either a
ashing F or C appears.
2. Press the button again to change the display
to the desired unit of measurement. After
approximately four seconds of inactivity, the
new unit will be locked in and the
compass/temperature display will return.
If an abnormal temperature reading is displayed
for an extended period of time, see your
dealer. Under certain circumstances, a delay in
updating the temperature is normal.
122

Automatic Dimming Mirror Operation
The automatic dimming mirror function is turned on
automatically each time the ignition is started.
To operate the automatic dimming mirror, do the
following:
1. Make sure the green indicator light, located to
the left of the on/off button, is lit. If it is not,
press and hold the on/off button for
approximately six seconds until the green light
comes on, indicating that the mirror is in
automatic dimming mode.
2. Turn off the automatic dimming mirror function
by pressing and holding the on/off button for
approximately six seconds, until the green
indicator light turns off.
Compass Calibration
The compass may need calibration if one of the
following occurs:
After approximately ve seconds, the display
does not show a compass heading, N for
North, for example, there may be a strong
magnetic eld interfering with the compass.
Such interference may be caused by a
magnetic antenna mount, magnetic note pad
holder, or a similar magnetic item.
The compass does not display the correct
heading and the compass zone variance
is set correctly.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed,
push the on/off button for approximately
12 seconds or until CAL is displayed.
The compass can be calibrated by driving the
vehicle in circles at 5 mph (8 km/h) or less until the
display reads a direction.
123

Compass Variance
The mirror is set in zone eight upon leaving the
factory. It will be necessary to adjust the compass
to compensate for compass variance if the
vehicle is outside of zone eight. Under certain
circumstances, as during a long distance
cross-country trip, it will be necessary to adjust for
compass variance. Compass variance is the
difference between earth’s magnetic north and true
geographic north. If not adjusted to account for
compass variance, the compass could give
false readings.
To adjust for compass variance, do the following:
1. Find your current location and variance
zone number on the following zone map.
2. Press and hold the on/off button untilaZand
a zone number appears in the display. The
compass is now in zone mode.
3. Keep pressing the on/off button until the
desired zone number appears in the
display. Release the button. After
approximately four seconds of inactivity, the
new zone number will be locked in and
the compass/temperature display will return.
124

Cleaning the Mirror
When cleaning the mirror, use a paper towel or
similar material dampened with glass cleaner.
Do not spray glass cleaner directly on the mirror
as that may cause the liquid cleaner to enter
the mirror housing.
Automatic Dimming Rearview
Mirror with Compass and
Temperature Display
Your vehicle may have this mirror. When on, an
automatic dimming mirror will dim to the proper
level to minimize glare from lights behind you
after dark.
The mirror also includes a dual display in the
upper right corner of the mirror with the compass
reading and the outside temperature.
Yb:Briey press this button to turn the display
on or off.
Temperature Display
The temperature can be displayed by pressing the
compass/temperature button. Pressing the
compass/temperature button once briey, will
toggle the display reading on and off. To alternate
the temperature reading between Fahrenheit and
Celsius, press and hold the compass/temperature
button for approximately three seconds until the
display blinks F and C. After approximately ve
seconds of inactivity, the display will stop blinking
and display the last selection made.
If an abnormal reading is displayed, see your
dealer.
Automatic Dimming Mirror Operation
O
:Press this button to turn the automatic
dimming feature on or off. The indicator light to
the left of the button will turn on to indicate when
the feature is on. Once the mirror is turned off,
it will remain off until it is turned back on, or until
the vehicle is restarted.
125

Compass Operation
Press the compass/temperature button once
briey to turn the display on or off.
Compass Calibration
The compass may need calibration if one of the
following occurs:
If CAL is displayed while driving in the vehicle.
After approximately ve seconds, the display
does not show a compass heading, N for
North, for example, there may be a strong
magnetic eld interfering with the compass.
Such interference may be caused by a
magnetic antenna mount, magnetic note pad
holder, or a similar magnetic item.
The compass does not display the correct
heading and the compass zone variance
is set correctly.In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed,
push in the compass/temperature button for
approximately nine seconds or until CAL is
displayed.
The compass can be calibrated by driving the
vehicle in circles at 5 mph (8 km/h) or less until the
display reads a direction.
Compass Variance
The mirror is set in zone eight upon leaving the
factory. It will be necessary to adjust the compass
to compensate for compass variance if the vehicle
is outside zone eight. Under certain circumstances,
as during a long distance cross-country trip, it will
be necessary to adjust for compass variance.
Compass variance is the difference between earth’s
magnetic north and true geographic north. If not
adjusted to account for compass variance, your
compass could give false readings.
126

To adjust for compass variance:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold the compass/temperature
button for six seconds until a zone number
appears in the display.3. Press the compass/temperature button on the
bottom of the mirror until the new zone
number appears in the display. After you stop
pressing the button, the display will show a
compass direction within a few seconds.
Cleaning the Mirror
Use a paper towel or similar material dampened
with glass cleaner. Do not spray glass cleaner
directly on the mirror as that may cause the liquid
cleaner to enter the mirror housing.
127

Outside Power Mirrors
The outside power
mirror controls are
located on the driver’s
door armrest.
To adjust the power mirrors, do the following:
1. Press the top of the selector switch to choose
the driver’s side mirror. Press the bottom of
the selector switch to choose the passenger’s
side mirror.
2. Use the round, four-way control pad to move
the mirror in the desired direction.
If the mirror begins making a ratcheting sound, the
mirror has reached the end of its travel and can go
no farther in that direction. To stop the sound,
reverse the mirror direction using the control pad.
The mirrors can be manually folded inward to
prevent damage when going through an automatic
car wash or conned space. Pull the mirror toward
the vehicle to fold. To return the mirror to its original
position, push outward. Be sure to return both
mirrors to the unfolded position before driving.
Outside Convex Mirror
Your passenger’s outside rearview mirror is
convex. A convex mirror’s surface is curved so
you can see more from the driver’s seat.
{CAUTION:
A convex mirror can make things (like
other vehicles) look farther away than
they really are. If you cut too sharply into
the right lane, you could hit a vehicle on
your right. Check your inside mirror or
glance over your shoulder before
changing lanes.
128

OnStar®System
OnStar®uses several innovative technologies and
live advisors to provide you with a wide range
of safety, security, information, and convenience
services. If your airbags deploy, the system is
designed to make an automatic call to OnStar
®
Emergency advisors who can request emergency
services be sent to your location. If you lock
your keys in the vehicle, call OnStar
®at
1-888-4-ONSTAR and they can send a signal to
unlock your doors. If you need roadside
assistance, press the OnStar
®button and they
can contact Roadside Service for you.
OnStar
®service is provided to you subject to the
OnStar®Terms and Conditions. You may cancel
your OnStar®service at any time by contacting
OnStar®as provided below. A complete OnStar®
Owner’s Guide and the OnStar®Terms andConditions are included in the vehicle’s OnStar
®
Subscriber glove box literature. For more
information, visit onstar.com or onstar.ca, contact
OnStar
®at 1–888–4–ONSTAR (1–888–466–7827)
or TTY 1–877–248–2080, or press the OnStar®
button to speak with an OnStar®advisor 24 hours a
day, 7 days a week.
Not all OnStar
®features are available on all
vehicles. To check if your vehicle is equipped to
provide the services described below, or for a
full description of OnStar
®services and system
limitations, see the OnStar®Owner’s Guide in your
glove box or visit onstar.com.
OnStar®Services
For new vehicles equipped with OnStar®, the Safe
& Sound Plan, or the Directions & Connections®
Plan is included for one year from the date of
purchase. You can extend this plan beyond the rst
year, or upgrade to the Directions & Connections
®
Plan. For more information, press the OnStar®
button to speak with an advisor. Some OnStar®
services (such as Remote Door Unlock or Stolen
Vehicle Location Assistance) may not be available
until you register with OnStar
®.
129

Available Services with Safe & Sound®Plan

Automatic Notication of Airbag Deployment
Advanced Automatic Crash Notication (AACN)
(If equipped)
Link to Emergency Services
Roadside Assistance
Stolen Vehicle Location Assistance
AccidentAssist
Remote Door Unlock/Vehicle Alert
OnStar®Vehicle Diagnostics
GM Goodwrench®On Demand Diagnostics
OnStar®Hands-Free Calling with
30 complimentary minutes
OnStar®Virtual Advisor (U.S. Only)
Available Services included with
Directions & Connections®Plan

All Safe and Sound Plan Services
Driving Directions - Advisor delivered or
OnStar®Turn-by-Turn Navigation (If equipped)
RideAssist
Information and Convenience Services
OnStar®Hands-Free Calling
OnStar®Hands-Free Calling allows eligible
OnStar®subscribers to make and receive calls
using voice commands. Hands-Free Calling is fully
integrated into the vehicle, and can be used
with OnStar
®Pre-Paid Minute Packages.
Hands-Free Calling may also be linked to a
Verizon Wireless service plan in the U.S. or a Bell
Mobility service plan in Canada, depending on
eligibility. To nd out more, refer to the OnStar
®
Owner’s Guide in the vehicle’s glove box, visit
www.onstar.com or www.onstar.ca, or speak with
an OnStar
®advisor by pressing the OnStar®
button or calling 1-888-4-ONSTAR
(1-888-466-7827).
130