change time HUMMER H3 2007 User Guide

The DRL system will come on when the following
conditions are met:
The ignition is on.
The exterior lamps control is in AUTO.
The transmission is not in PARK (P) if
you have an automatic transmission.
The light sensor determines it is daytime.
When the DRL are on, no other lamps are on.
The instrument panel will not be lit up either.
For vehicles rst sold in Canada, if parking
lamps are manually turned on, DRL will stay on.
When it begins to get dark, the automatic
headlamp system will switch from DRL to the
headlamps.
As with any vehicle, you should turn on the
regular headlamp system when you need it.
To turn off the DRL, seeExterior Lamps
on page 162.
Vehicles rst sold in Canada cannot turn
off DRL unless certain conditions are met.
SeeExterior Lamps on page 162.
Automatic Headlamp System
When it is dark enough outside, the automatic
headlamp system will turn on after the transmission
has been shifted from PARK (P) to DRIVE (D).
The headlamps, taillamps, sidemarker, parking
lamps, roof marker lamps, and the instrument panel
lights will turn on at normal brightness. The radio
lights will become more dim when the headlights
are off compared to when the headlights are on.
Your vehicle has a light sensor located on the top of
the instrument panel. Be sure it is not covered, or
the system will be on whenever the ignition is on.
The system may also turn on the headlamps when
driving through a parking garage, heavy overcast
weather, or a tunnel. This is normal.
There is a delay in the transition between the
daytime and nighttime operation of the Daytime
Running Lamps (DRL) and the automatic headlamp
system so that driving under bridges or bright
overhead street lights does not affect the system.
The DRL and automatic headlamp system will only
be affected when the light sensor detects a change
in lighting lasting longer than the delay.
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#(Air Conditioning):Press the left knob on the
control panel to turn the air conditioning system
on or off. An indicator light on the button will be
lit when the air conditioning is turned on. This
system cools and dehumidies the air entering
the vehicle.
The air conditioning will not function if the fan
is turned off. If air conditioning is selected with
fan off, the indicator will ash three times and
then turn off.
A slight change in engine performance may occur
when the air conditioning compressor shuts off
and turns on again. This is normal. The system is
designed to make adjustments to help with fuel
economy while still maintaining the selected
temperature.
The air conditioning system removes moisture from
the air, so sometimes there may be a small amount
of water dripping underneath the vehicle while idling
or after turning off the engine. This is normal.9(Fan):Turn the center knob on the control
panel to control the fan speed. Turn the knob
clockwise or counterclockwise to increase
or decrease the fan speed.
9(Off):Turn the center knob to this position
to turn the fan off. With the fan off, you may
still experience airow from the system that
increases with vehicle speed depending on the
mode and temperature settings. Enable
recirculation mode to stop this airow from
occurring.
The right knob on the control panel is used to
direct the airow inside the vehicle. Turn the knob
to select one of the following modes:
@(Recirculation):Press the center knob on
the control panel to recirculate air inside the
vehicle and prevent outside air from coming in.
It can be used to prevent outside odors from
entering your vehicle and cool the air inside your
vehicle more quickly. Press this button to turn
the recirculation mode on or off. An indicator light
on the button will come on to let you know the
recirculation mode is activated.
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tSEEKu:Press the left arrow to go to the
start of the current or the previous track. Press the
right arrow to go to the start of the next track.
Pressing either arrow for more than two seconds
searches the previous or next tracks at
two tracks per second. Release the arrow to
stop searching and to play the track.
1
r(Previous):Press this pushbutton to go
to the start of the current track if more than
eight seconds have played. The previous symbol
and the track number appears on the display.
If this pushbutton is held or pressed more
than once, the player continues moving backward
through the CD.
2
[(Next):Press this pushbutton to go to the
next track. The next symbol and the track number
appears on the display. If this pushbutton is
held or pressed more than once, the player
continues moving forward through the CD.
4
y(Random):Press this pushbutton to hear the
tracks in random, rather than sequential, order. The
random symbol appears on the display. Press this
pushbutton again to turn off random play.BAND:Press this button to listen to the radio
when a CD is playing. The inactive CD remains
safely inside the radio for future listening.
B(CD):Press this button to play a CD while
listening to the radio. The CD symbol appears
on the display when a CD is loaded.
DISP (Display):Press this button to see how
long the current track has been playing. The
elapsed time of the track appears on the display.
To change the default on the display, track or
elapsed time, press this button until you see
the desired display, then hold the button for
two seconds. The radio produces one beep and
the selected display becomes the default.
AUTO EQ (Automatic Equalization):Press EQ
to select an equalization setting while playing
a CD. The equalization is set whenever a CD
is played. See “EQ” listed previously for more
information. If you select an EQ setting for your
CD, it is activated each time you play a CD.
Z(Eject):Press this button to eject a CD.
Eject may be activated with either the ignition or
radio off. CDs can be loaded with the ignition
and radio off if this button is pressed rst.
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Playing the Radio
P
(Power):Press this knob to turn the system
on and off.
Turn this knob clockwise or counterclockwise to
increase or to decrease the volume.
DISP (Display):When the ignition is turned off,
press this knob to display the time.
For XM™ (if equipped), press the DISP knob while
in XM™ mode to retrieve four different categories of
information related to the current song or channel:
Artist, Song Title, Category or PTY (program type),
Channel Number/Channel Name.
To change the default on the display, press the
DISP knob until you see the desired display, then
hold this knob for two seconds. The radio produces
one beep and the selected display becomes the
default.AUTO VOL (Automatic Volume):With automatic
volume, the audio system adjusts automatically
to make up for road and wind noise as you drive.
Set the volume at the desired level. Press this
button to select LOW, MEDIUM, or HIGH.
Each higher setting allows for more volume
compensation at faster vehicle speeds. Then as
you drive, automatic volume increases the volume,
as necessary, to overcome noise at any speed.
The volume level should always sound the same to
you as you drive. NONE displays if the radio
cannot determine the vehicle speed. To turn
automatic volume off, press this button until
AVOL OFF displays.
Finding a Station
BAND:Press this button to switch between FM1,
FM2, AM, or XM1 or XM2 (if equipped). The
display shows the selection.
e(Tune):Turn this knob to select radio stations.
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To use repeat, do the following:
To repeat the track you are listening to, press
and release the repeat button. RPT ON
displays. Press this button again to turn off
repeat play. RPT OFF displays.
To repeat the CD you are listening to, press
and hold the repeat button for two seconds.
RPT ON displays. Press this button again
to turn off repeat play. RPT OFF displays.
y(Random):With random, you can listen to the
tracks in random, rather than sequential, order,
on one CD or on all of the CDs. To use random,
do one of the following:
To play the tracks on the CD you are listening
to in random order, press and release the
random button. RANDOM ONE displays.
Press this button again to turn off random play.
To play the tracks on all of the CDs that
are loaded in random order, press and
hold this button for more than two seconds.
A beep sounds and RANDOM ALL displays.
Press this button again to turn off random play.
tSEEKu:Press the left arrow to go to the
start of the current track, if more than ten seconds
have played. Press the right arrow to go to the
next track. If either arrow is held or pressed more
than once, the player continues moving backward
or forward through the CD.
To scan one CD, press and hold either arrow for
more than two seconds until SCAN displays
and a beep sounds. The radio goes to the next
track, plays for 10 seconds, then goes to the next
track. Press either arrow again, to stop scanning.
To scan all loaded CDs, press and hold either arrow
for more than four seconds until CD SCAN displays
and a beep sounds. Use this feature to listen to
10 seconds of the rst track of each loaded CD.
Press either arrow again, to stop scanning.
DISP (Display):Press this knob to see how long
the current track has been playing. The elapsed
time of the track appears on the display. To
change the default on the display, track or elapsed
time, press this knob until you see the desired
display, then hold the knob for two seconds.
The radio produces one beep and the selected
display becomes the default.
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BAND:Press this button to listen to the radio
when a CD is playing. The inactive CD(s) remains
safely inside the radio for future listening.
B(CD):Press this button to play a CD while
listening to the radio. The CD symbol appears on
the display when a CD is loaded.
AUTO EQ (Automatic Equalization):Press
AUTO EQ to select an equalization setting while
playing a CD. The equalization is set whenever a
CD is played. See “AUTO EQ” listed previously for
more information. If you select an EQ setting for
your CD, it is activated each time you play a CD.
Using Song List Mode
R
(Song List):The six-disc CD changer has a
feature called song list. This feature is capable
of saving 20 track selections.
To save tracks into the song list feature, perform
the following steps:
1. Turn the CD player on and load it with at least
one CD. See “LOAD CD” listed previously in
this section for more information.
2. Check to see that the CD changer is not in
song list mode. S-LIST should not appear on
the display. If S-LIST is present, press the
song list button to turn it off.3. Select the desired CD by pressing the
numbered pushbutton and then use the SEEK
SCAN right arrow to locate the track to be
saved. The track begins to play.
4. Press and hold the song list button to save
the track into memory. When the song list
button is pressed, one beep sounds. After
two seconds of continuously pressing the song
list button, two beeps sounds to conrm the
track has been saved.
5. Repeat Steps 3 and 4 for saving other
selections.
S-LIST FULL displays if you try to save more than
20 selections.
To play the song list, press the song list button.
One beep sounds and S-LIST displays. The
recorded tracks begins to play in the order they
were saved.
Seek through the song list by using the SEEK
SCAN arrows. Seeking past the last saved track
returns to the rst saved track.
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4(Information) (XM™ Satellite Radio Service
and MP3 Features):INFO displays whenever
a current track has ID3 tag information. Press this
button to display the artist name and album
contained in the tag. INFO disappears from the
display when the information in the ID3 tag
has nished.
DISP (Display):Press this knob to switch
between track mode, folder/playlist mode, and
time of day mode. The display shows only
eight characters, but there can be up to four pages
of text. If there are more than eight characters
in the song, folder, or playlist name, pressing
this knob within two seconds takes you to the next
page of text. If there are no other pages to be
shown, pressing this knob within two seconds
takes you to the next display mode.
Track mode displays the current track number
and the ID3 tag song name.
Folder/playlist mode displays the current folder
or playlist number and the folder/playlist name.
Time of day mode displays the time of day and
the ID3 tag song name.To change the default on the display, press the
DISP knob until you see the desired display,
then hold this knob for two seconds. The radio
produces one beep and the selected display
becomes the default.
AUTO EQ (Automatic Equalization):Press EQ
to select an equalization setting while playing
a CD. The equalization is set whenever a CD is
played. See “EQ” listed previously for more
information. If you select an EQ setting for your
CD, it is activated each time you play a CD.
Z(Eject):Press this button to eject a CD.
Eject may be activated with either the ignition
or radio off. CDs may be loaded with the ignition
and radio off if this button is pressed rst.
227

Remember: ABS does not change the time you
need to get your foot up to the brake pedal or
always decrease stopping distance. If you get too
close to the vehicle in front of you, you will not have
time to apply your brakes if that vehicle suddenly
slows or stops. Always leave enough room up
ahead to stop, even though you have ABS.
Using ABS
Do not pump the brakes. Just hold the brake
pedal down rmly and let anti-lock work for you.
You may feel the brakes vibrate, or you may
notice some noise, but this is normal.
Braking in Emergencies
With ABS, you can steer and brake at the same
time. In many emergencies, steering can help you
more than even the very best braking.
Traction Control System (TCS)
Your vehicle has a Traction Control System (TCS)
that limits wheel spin. This is especially useful
in slippery road conditions. The system operates
only if it senses that any of the wheels are spinning
or beginning to lose traction. When this happens,
the system applies the brakes to limit wheel
spin and also reduces engine power. You may
feel or hear the system working, but this is normal.
The Traction Control System may operate on dry
roads under some conditions. When this happens,
you may notice a reduction in acceleration or a
pumping sound. This is normal and doesn’t mean
there’s a problem with your vehicle. Examples of
these conditions include hard acceleration in a turn,
an abrupt upshift or downshift of the transmission
or driving on rough roads.
If your vehicle is in cruise control when the TCS
begins to limit wheel spin, the cruise control will
automatically disengage. When road conditions
allow you to safely use it again, you may re-engage
the cruise control. SeeCruise Control on page 159.
241

Watch for traffic signs, pavement markings,
and lines. If you can see a sign up ahead
that might indicate a turn or an intersection,
delay your pass. A broken center line
usually indicates it is all right to pass, providing
the road ahead is clear. Never cross a solid
line on your side of the lane or a double solid
line, even if the road seems empty of
approaching traffic.
Do not get too close to the vehicle you want to
pass while you are awaiting an opportunity. For
one thing, following too closely reduces your
area of vision, especially if you are following a
larger vehicle. Also, you will not have adequate
space if the vehicle ahead suddenly slows or
stops. Keep back a reasonable distance.
When it looks like a chance to pass is coming
up, start to accelerate but stay in the right lane
and do not get too close. Time your move so
you will be increasing speed as the time comes
to move into the other lane. If the way is clear to
pass, you will have a running start that more
than makes up for the distance you would lose
by dropping back. And if something happens to
cause you to cancel your pass, you need only
slow down and drop back again and wait for
another opportunity.
If other vehicles are lined up to pass a slow
vehicle, wait your turn. But take care that
someone is not trying to pass you as you pull
out to pass the slow vehicle. Remember to
glance over your shoulder and check the
blind spot.
Check your vehicle’s mirrors, glance over your
shoulder, and start your left lane change signal
before moving out of the right lane to pass.
When you are far enough ahead of the passed
vehicle to see its front in your vehicle’s inside
mirror, activate the right lane change signal and
move back into the right lane. Remember that,
if your vehicle’s passenger side outside mirror is
convex, the vehicle you just passed may seem
to be farther away from you than it really is.
Try not to pass more than one vehicle at a time
on two-lane roads. Reconsider before passing
the next vehicle.
Do not overtake a slowly moving vehicle too
rapidly. Even though the brake lamps are not
ashing, it may be slowing down or starting
to turn.
If you are being passed, make it easy for the
following driver to get ahead of you. Perhaps
you can ease a little to the right.
248

Towing a Trailer
{CAUTION:
If you do not use the correct equipment
and drive properly, you can lose control
when you pull a trailer. For example, if the
trailer is too heavy, the brakes may not
work well — or even at all. You and your
passengers could be seriously injured.
Pull a trailer only if you have followed all
the steps in this section. Ask your dealer
for advice and information about towing a
trailer with your vehicle.
Notice:Pulling a trailer improperly can
damage your vehicle and result in costly repairs
not covered by your warranty. To pull a trailer
correctly, follow the advice in this part, and see
your dealer for important information about
towing a trailer with your vehicle.To identify the trailering capacity of your vehicle,
you should read the information in “Weight of
the Trailer” that appears later in this section.
Trailering is different than just driving your vehicle
by itself. Trailering means changes in handling,
acceleration, braking, durability and fuel economy.
Successful, safe trailering takes correct
equipment, and it has to be used properly.
That’s the reason for this part. In it are many
time-tested, important trailering tips and safety
rules. Many of these are important for your safety
and that of your passengers. So please read
this section carefully before you pull a trailer.
297