2007 CHEVROLET TRAIL BLAZER window

Compass Variance
Compass variance is the difference between earth’s
magnetic north and true geographic north. The
mirror is set to zone eight upon leaving the factory.
It will be necessary to adjust the compass to
compensate for compass variance if you live
outside zone eight. Under certain circumstances,
such as during a long distance cross-country trip,
it will be necessary to adjust for compass variance.
If not adjusted to account for compass variance,
your 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 for
six seconds. Release the button when
(FOR ZONE) is displayed. The number shown
is the current zone number.
3. Scroll through the zone numbers that appear in
the window on the mirror by pressing the on/off
button. Once you nd your zone number,
release the button. After about four seconds,
the mirror will return to the compass display,
and the new zone number will be set.
139

In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed,
press and hold the COMP button 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 you live
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.
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 COMP button until a zone
number appears in the display.3. Press the COMP 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.
142

Outside Heated Mirrors
If the vehicle has this feature, when the rear
window defogger is turned on, the outside driver’s
and passenger’s rearview mirrors also heat to
help clear them of ice, snow, and condensation.
SeeDual Climate Control System on page 187or
Dual Automatic Climate Control System on
page 190for more information.
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 emergencyservices 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®Owners Guide and the OnStar®Terms
and Conditions 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.
145

Instrument Panel Overview........................ 170
Hazard Warning Flashers.......................... 172
Other Warning Devices............................. 172
Horn.......................................................... 172
Tilt Wheel.................................................. 173
Turn Signal/Multifunction Lever.................. 173
Turn and Lane-Change Signals................. 174
Headlamp High/Low-Beam Changer.......... 175
Flash-to-Pass............................................ 175
Windshield Wipers..................................... 175
Windshield Washer.................................... 176
Rear Window Wiper/Washer...................... 176
Cruise Control........................................... 177
Headlamps................................................ 180
Headlamps on Reminder........................... 181
Daytime Running Lamps (DRL)................. 181
Automatic Headlamp System..................... 182
Fog Lamps................................................ 183
Instrument Panel Brightness...................... 183
Dome Lamps............................................. 183
Dome Lamp Override................................ 184
Entry Lighting............................................ 184
Exit Lighting.............................................. 184
Reading Lamps......................................... 184Electric Power Management...................... 185
Battery Run-Down Protection..................... 186
Accessory Power Outlet(s)........................ 186
Ashtray(s) and Cigarette Lighter................ 187
Climate Controls......................................... 187
Dual Climate Control System..................... 187
Dual Automatic Climate Control System....... 190
Outlet Adjustment...................................... 195
Rear Climate Control System.................... 196
Warning Lights, Gages, and Indicators..... 198
Instrument Panel Cluster........................... 199
Speedometer and Odometer...................... 200
Trip Odometer........................................... 200
Tachometer............................................... 201
Safety Belt Reminder Light........................ 201
Passenger Safety Belt Reminder Light....... 202
Airbag Readiness Light............................. 202
Passenger Airbag Status Indicator............. 203
Charging System Light.............................. 206
Voltmeter Gage......................................... 207
Brake System Warning Light..................... 208
Anti-Lock Brake System Warning Light...... 209
StabiliTrak
®Service Light........................... 210
Section 3 Instrument Panel
167

The main components of your instrument panel are the following:
A. Exterior Lamp Control. SeeHeadlamps
on page 180. Dome Lamp Override Button.
SeeDome Lamp Override on page 184.
Instrument Panel Brightness Control. See
Instrument Panel Brightness on page 183.
Fog Lamp Button (If Equipped). SeeFog
Lamps on page 183.
B. Air Outlets. SeeOutlet Adjustment
on page 195.
C. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 173.
D. Instrument Panel Cluster. SeeInstrument
Panel Cluster on page 199.
E. Ignition Switch. SeeIgnition Positions
on page 112.
F. Transfer Case Controls. See “Automatic
Transfer Case” underFour-Wheel Drive
on page 121.
G. Rear Window Washer/Wiper. SeeWindshield
Washer on page 176.H. Audio System. SeeAudio System(s)
on page 238.
I. Climate Controls. SeeDual Climate
Control System on page 187.
J. Hood Release. SeeHood Release
on page 394.
K. Ashtray. SeeAshtray(s) and Cigarette
Lighter on page 187.
L. Shift Lever and StabiliTrak
®Button.
SeeShifting Into Park (P) on page 127
andStabiliTrak
®System on page 313.
M. Lighter. SeeAshtray(s) and Cigarette
Lighter on page 187.
N. Accessory Power Outlet. SeeAccessory
Power Outlet(s) on page 186.
O. Rear Window Defogger. See “Rear Window
Defogger” underDual Climate Control System
on page 187andDual Automatic Climate
Control System on page 190.
P. Glove Box. SeeGlove Box on page 161.
171

For steady wiping at low speed, turn the band
away from you to the rst solid band past the
delay settings. For high-speed wiping, turn
the band further, to the second solid band past
the delay settings. To stop the wipers, move
the band to off.
Be sure to clear ice and snow from the wiper
blades before using them. If they are frozen to
the windshield, carefully loosen or thaw them.
If the blades do become worn or damaged,
get new blades or blade inserts.
Windshield Washer
L(Windshield Washer):To spray washer uid
on the windshield, press the windshield washer
paddle. The wipers will clear the window and then
either stop or return to your preset speed.
{CAUTION:
In freezing weather, do not use your
washer until the windshield is warmed.
Otherwise the washer uid can form ice
on the windshield, blocking your vision.
Rear Window Wiper/Washer
{CAUTION:
In freezing weather, do not use your
washer until the windshield is warmed.
Otherwise the washer uid can form ice
on the windshield, blocking your vision.
This control is located
to the right of the
steering wheel on the
instrument panel.
176

To turn the rear wiper on, turn the control to
either 1, 2, or 3. For delayed wiping, turn the
control to 1 or 2. For steady wiping, turn the
control to 3. To turn the wiper off, turn the
control to 0.
To wash the rear window, press the washer
symbol located in the center of the control.
The rear window washer uses the same uid
bottle as the windshield washer. However, the
rear window washer will run out of uid before
the windshield washer. If you can wash your
windshield but not your rear window, check the
uid level.Cruise Control
Your vehicle has
cruise control. The
controls are located
on the end of the turn
signal/multifunction
lever.
R(On):Move the switch to this position to turn
the cruise control system on.
S(Resume/Accelerate):Move the switch to this
position to resume a set speed or to accelerate.
T(Set):Press this button, located at the end
of the lever, to set a speed.
9(Off):Move the switch to this position to turn
the cruise control system off and cancel memory
of a set speed.
177

Electric Power Management
The vehicle has Electric Power Management
(EPM) that estimates the battery’s temperature and
state of charge. It then adjusts the voltage for
best performance and extended life of the battery.
When the battery’s state of charge is low, the
voltage is raised slightly to quickly put the charge
back in. When the state of charge is high, the
voltage is lowered slightly to prevent overcharging.
If the vehicle has a voltmeter gage or voltage
display on the Driver Information Center (DIC),
you may see the voltage move up or down.
This is normal. If there is a problem, an alert will
be displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for all
vehicles. This is because the generator (alternator)
may not be spinning fast enough at idle to
produce all the power that is needed for very
high electrical loads.A high electrical load occurs when several of the
following loads are on: headlamps, high beams,
fog lamps, rear window defogger, climate
control fan at high speed, heated seats, engine
cooling fans, trailer loads, and loads plugged
into accessory power outlets.
EPM works to prevent excessive discharge
of the battery. It does this by balancing the
generator’s output and the vehicle’s electrical
needs. It can increase engine idle speed to
generate more power, whenever needed.
It can temporarily reduce the power demands
of some accessories.
Normally, these actions occur in steps or levels,
without being noticeable. In rare cases at the
highest levels of corrective action, this action
may be noticeable to the driver. If so, a Driver
Information Center (DIC) message might be
displayed, such as Battery Saver Active or
Service Battery Charging System. If this message
is displayed, it is recommended that the driver
reduce the electrical loads as much as possible.
SeeDIC Warnings and Messages on page 224.
185