Vehicle Positioning
At times, the position of the vehicle on the map may be
inaccurate due to one or more of the following reasons:
The road system has changed.
The vehicle is driving on slippery road surfaces such
as in sand, gravel, and/or snow.
The vehicle is traveling on winding roads.
The vehicle is on a long straight road.
The vehicle is approaching a tall building or a large
vehicle.
The surface streets run parallel to a freeway.
The vehicle has just been transferred by a vehicle
carrier or a ferry.
The current position calibration is set incorrectly.
The vehicle is traveling at high speed.
The vehicle changes directions more than once, or
when the vehicle is turning on a turn table in a
parking lot.
The vehicle is entering and/or exiting a parking lot,
garage, or a lot with a roof.
The GPS signal is not received.
A roof carrier is installed on the vehicle.
The vehicle is being driven with tire chains.
The tires are replaced.
The tire pressure for the tires is incorrect.
The tires are worn.
The rst time the map DVD is inserted.
The battery is disconnected for several days.
The vehicle is driving in heavy traffic where driving is
at low speeds, and the vehicle is stopped and started
repeatedly.
If problems are experienced with the navigation system,
see “Adjust Vehicle Position” underSetup Menu on
page 4-12to calibrate the system.
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Problems with Route Guidance
Inappropriate route guidance may occur under one or
more of the following conditions:
You have not turned onto the road indicated.
Route guidance may not be available when using
automatic rerouting for the next right or left turn.
The route may not be changed when using
automatic rerouting.
There is no route guidance when turning at an
intersection.
Plural names of places may be announced
occasionally.
It may take a long time to operate automatic
rerouting during high-speed driving.
Automatic rerouting may display a route returning to
the set waypoint if you are heading for a destination
without passing through a set waypoint.
The route prohibits the entry of a vehicle due to a
regulation by time or season or any other regulation
which may be given.
Some routes may not be searched.
The route to the destination may not be shown if
there are new roads, if roads have recently
changed, or if certain roads are not listed on the
map DVD. SeeOrdering Map DVDs on page 4-52.
To recalibrate the vehicle’s position on the map, see
“Adjust Vehicle Position” underSetup Menu on
page 4-12to calibrate the system.
If the System Needs Service
If the navigation system needs service and the steps
listed here have been followed but there are still
problems, see your dealer/retailer for assistance.
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Ordering Map DVDs
The map DVD in the vehicle is the most up-to-date
information available when the vehicle was produced.
The map DVD is updated periodically, provided that the
map information has changed.
If there are any questions about the operation of the
navigation system or the update process, contact
the GM Nav Disc Center toll-free phone number,
1-877-NAV-DISC (1-877-628-3472) or go to the center’s
website, www.gmnavdisc.com.
If you need any updates or a replacement disc, because
the current disc is lost, damaged, or needs to be updated,
call the GM Nav Disc Center or order a new disc online.
To order a disc, have your Vehicle Identi cation Number
(VIN) available. This helps the center make sure you
receive the correct and most up-to-date DVD map disc for
your vehicle. SeeVehicle Identification Number (VIN) on
page 6-81for more information.
After receiving the updated disc, replace the old disc in
the navigation system. See “Installing the DVD Map Disc”
and “Ejecting the DVD Map Disc” underMaps on
page 4-38. Dispose of the old disc to avoid confusion
about which disc is the most current.
Database Coverage Explanations
Coverage area depends upon the map detail available.
Some areas have greater map detail than others. The
navigation system works only as well as the information
provided on the map disc. SeeOrdering Map DVDs on
page 4-52on how to obtain updated map information.
Navigation Audio System
Notice:Before adding any sound equipment to the
vehicle, such as an audio system, CD player, CB
radio, mobile telephone, or two-way radio, make
sure that it can be added by checking with your
dealer/retailer. Also, check federal rules covering
mobile radio and telephone units. If sound equipment
can be added, it is very important to do it properly.
Added sound equipment can interfere with the
operation of the vehicle’s engine, radio, or other
systems, and even damage them. The vehicle’s
systems can interfere with the operation of sound
equipment that has been added.
The vehicle has a feature called Retained Accessory
Power (RAP). With RAP, the audio system can be played
even after the ignition is turned off. SeeRetained
Accessory Power (RAP) on page 2-25for more
information.
The audio system is operated using navigation system
menus. The audio menus are explained in this section.
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GPS TIME:The current GPS time displays to the right of
this screen button. Touch GPS TIME to set the navigation
system time to match current GPS time. If the seconds for
the present minute are greater than thirty when GPS
TIME is selected, the clock rounds up to the next minute.
Daylight Saving Time:Touch this screen button to
increase the time setting by one hour. Then touch GPS
TIME to save the new setting. If the screen button is light
blue, the daylight savings time feature is on. If the button
is dark blue, the daylight savings time feature is off.
TIME ZONE:The selected time zone appears to the
right of this screen button. Touch this screen button to
toggle between time zones and select the desired
one. The time of the selected zone displays to the right
of the GPS TIME screen button. To set the clock to
the new setting, touch GPS TIME.
If the system is not receiving GPS information, the time
can still be set manually as described above but the
GPS time and Daylight Saving Time features will not
be available.
Touch Return to go back to the previous menu.Screen Adjust Menu
The following options are available from this menu:
K(Contrast):Touch the plus (+) or minus (−) signs to
adjust the contrast of the screen. The screen changes.
Touch SET to con rm the setting.
!(Brightness):Touch the plus (+) or minus (−) signs
to adjust the brightness of the screen. The screen
changes. Touch SET to con rm the setting.
AUTO:This setting automatically adjusts the contrast
and brightness of the screen depending on exterior
lighting conditions.
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DAY:This setting leaves the screen in day mode.
Day mode is best suited for daylight conditions.
NIGHT:This setting leaves the screen in night mode.
Night mode is best suited for nighttime conditions.
SCREEN OFF:Touch SCREEN OFF to turn off the
screen. Press any hard key to turn the screen back on.
SET:Touch SET to save the choices and exit the
CLOCK ADJUST menu.
Language
The vehicle has been set for the English language.
Change the language, through the Driver Information
Center (DIC). SeeDriver Information Center (DIC)
on page 3-57for more information.
If the language is changed from English, a majority of the
voice guidance prompts and screen text changes to the
selected language. Remember, the menu screens will not
match word-for-word as they appear in this manual.
Playing the Radio
PWR-VOL (Power-Volume):Press to turn the audio
and navigation systems on and off. Turn the knob
to increase or decrease the volume to the audio system.
«TUNE/SEEKª:Press the up or down arrow to
go to the next or previous station and stay there.BAND:Press this key to switch between AM, FM1,
FM2, XM1, XM 2, or WX, if equipped. While on a map
screen and this key is pressed, the screen will not
change but the audio source will.
Finding a Station
Press the BAND key to switch between AM, FM1, FM2,
XM1, XM2, or WX, if equipped. Touch the desired audio
source to select it.FM1 audio source shown, other sources similar
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CD/DVD Player
The player that is used for the navigation map DVD can
also be used as a single music CD player or a video
DVD player.
CD Player
To use the player as a single music CD player, the
navigation map DVD must be removed. While playing a
CD in the CD/DVD Player, the navigation system is
not available. The message “The disc installed is not a
map DVD” will appear on the display if any of the
navigation hard keys are pressed.
To remove the navigation map DVD and load a
music CD:
1. Start the vehicle.
2. Press the TILT hard key until you hear a beep.
This opens the faceplate of the system.3. If one is loaded, the navigation map DVD ejects
from the slot.
4. Gently remove the navigation map DVD from the
slot and return it to its case.
5. Insert the music CD into the slot. The system pulls
the CD into the player.
6. Press and release the TILT hard key to close the
faceplate.
Notice:Shifting out of P (Park) with the system’s
faceplate open will cause the faceplate to close
automatically. This could cause damage to a
CD, DVD or the system if it is partially loaded.
Before shifting out of P (Park), make sure that the
DVD or CD is loaded properly. The vehicle must
be shifted back into P (Park) to close the faceplate.
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