2007 CHEVROLET TRAIL BLAZER charging

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

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

If, after several seconds, all status indicator lights
remain on, or if there are no lights at all, there
may be a problem with the lights or the passenger
sensing system. See your dealer for service.
{CAUTION:
If the off indicator and the airbag
readiness light ever come on together,
it means that something may be wrong
with the airbag system. If this ever
happens, have the vehicle serviced
promptly, because an adult-size person
sitting in the right front passenger seat
may not have the protection of the frontal
airbag. SeeAirbag Readiness Light
on page 202.
Charging System Light
The charging system
light will come on briey
when you turn on
the ignition, 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 your battery.
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.
206

Voltmeter Gage
When your engine is
not running, but the
ignition is in RUN,
this gage displays
the battery voltage
in DC volts.
When the engine is running, the gage shows the
condition of the charging system. The gage may
transition from a higher to lower or a lower to higher
reading. This is normal. Readings between the
low and high warning zones indicate the normal
operating range. The voltmeter gage may also read
lower when in fuel economy mode. This is normal.Readings in the low warning zone may occur
when a large number of electrical accessories
are operating in the vehicle and the engine is
left idling for an extended period. This condition
is normal since the charging system is not able
to provide full power at engine idle. As engine
speeds are increased, this condition should correct
itself as higher engine speeds allow the charging
system to create maximum power.
You can only drive for a short time with the
reading in either warning zone. If you must drive,
turn off all unnecessary accessories.
Readings in either warning zone indicate a
possible problem in the electrical system.
Have the vehicle serviced as soon as possible.
207

SERVICE AIR BAG
This message displays if there is a problem with
the airbag system. Have your dealer/retailer
inspect the system for problems. SeeAirbag
Readiness Light on page 202andAirbag System
on page 69for more information. Press any of
the DIC buttons, or the trip stem, to acknowledge
this message and clear it from the DIC display.
SERVICE BRAKE SYSTEM
This message displays if a problem occurs with
the brake system. If this message appears, stop
as soon as possible and turn off the vehicle.
Restart the vehicle and check for the message
on the DIC display. If the message is still
displayed, or appears again when you begin
driving, the brake system needs service.
See your dealer/retailer.
SERVICE CHARGING SYS (System)
This message displays if there is a problem with the
battery charging system. Under certain conditions,
the charging system light may also turn on in the
instrument panel cluster. SeeCharging System
Light on page 206. The battery will not be charging
at an optimal rate and the vehicle will lose the ability
to enter the fuel economy mode. The vehicle is safe
to drive, however you should have the electrical
system checked by your dealer/retailer. Press any
of the DIC buttons, or the trip stem, to acknowledge
this message and clear it from the DIC display.
SERVICE STABILITRAK
If this message displays, it means there may be
a problem with the StabiliTrak®system. If this
message appears, try to reset the system by
performing the following: stop; turn off the engine;
then start the engine again. If this message still
comes on, it means there is a problem. You should
see your dealer/retailer for service. The vehicle is
safe to drive, however, you do not have the benet
of StabiliTrak
®, so reduce your speed and drive
accordingly. Press any of the DIC buttons, or the
trip stem, to acknowledge this message and clear it
from the DIC display.
228

Trailer Wiring Harness
Your vehicle may have a seven-wire trailer towing
harness. This harness may have a seven-pin
universal heavy-duty trailer connector (if equipped
with the trailering package) that is attached to a
bracket on the hitch platform or included with the
four-pin trailer towing harness. If your vehicle is
not equipped with the heavy-duty trailer connector,
you may purchase one from your dealer.The seven-wire harness contains the following
trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Running Lamps
White: Ground
Light Green: Back-up Lamps
Dark Blue: Electric Brakes
Red: Battery Feed (The chassis wiring ring
terminal must be fastened to a stud on the
underhood electrical center before the trailer
feed will become active.)
If you need to tow a light-duty trailer with a
standard four-way round pin connector, an adapter
connector is available from your dealer.
If you are charging a remote (non-vehicle) battery,
turn on the headlamps to boost the vehicle
system voltage and properly charge the battery.
381

C
Calibration........................133, 135, 138, 140
California Fuel............................................. 389
California Proposition 65 Warning................ 386
Canadian Owners........................................... 3
Capacities and Specications...................... 513
Carbon Monoxide..............104, 130, 350, 368
Care of
Safety Belts............................................. 495
Your CD and DVD Player........................ 302
Your CDs and DVDs................................ 302
Cargo Cover............................................... 164
Cargo Tie Downs........................................ 165
CD, MP3 ..................................................... 274
Center Console Storage Area...................... 161
Chains, Tire................................................. 472
Charging System Light................................ 206
Check
Engine Light............................................ 212
Gages Warning Light............................... 218
Check Gas Cap Light.................................. 219
Checking Things Under the Hood................ 394
Chemical Paint Spotting.............................. 499
Child Restraints
Child Restraint Systems............................. 48
Infants and Young Children........................ 44Child Restraints (cont.)
Lower Anchors and Tethers for Children..... 53
Older Children........................................... 41
Securing a Child Restraint in a Rear
Outside Seat Position............................. 61
Securing a Child Restraint in the Center
Rear Seat Position ................................. 64
Securing a Child Restraint in the Right
Front Seat Position ................................. 64
Where to Put the Restraint........................ 52
Chime Level Adjustment.............................. 303
Cigarette Lighter.......................................... 187
Cleaning
Aluminum Wheels.................................... 498
Exterior Lamps/Lenses............................. 496
Fabric/Carpet........................................... 493
Finish Care.............................................. 496
Inside of Your Vehicle.............................. 491
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 494
Leather.................................................... 494
Tires........................................................ 498
Underbody Maintenance........................... 499
Washing Your Vehicle.............................. 495
Weatherstrips........................................... 495
Windshield, Backglass, and
Wiper Blades........................................ 497
561

J
Jump Starting.............................................. 432
K
Keyless Entry System................................... 95
Keys............................................................. 93
L
Labeling, Tire Sidewall................................. 450
Lamps
Dome....................................................... 183
Dome Lamp Override............................... 184
Reading................................................... 184
LATCH System
Child Restraints......................................... 53
License Plate Lamps................................... 444
Liftgate/Liftglass........................................... 104
Liftglass/Liftgate........................................... 104
Light
Airbag Readiness..................................... 202
Anti-Lock Brake System Warning............. 209
Brake System Warning............................. 208
Change Engine Oil................................... 216
Charging System..................................... 206Light (cont.)
Check Gages Warning............................. 218
Check Gas Cap....................................... 219
Cruise Control.......................................... 217
Gate Ajar................................................. 218
Highbeam On.......................................... 217
Low Fuel Warning.................................... 219
Malfunction Indicator................................ 212
Passenger Airbag Status Indicator............ 203
Passenger Safety Belt Reminder.............. 202
Reduced Engine Power............................ 217
Safety Belt Reminder............................... 201
Security................................................... 216
Service Four-Wheel-Drive Warning Light.... 218
StabiliTrak
®Indicator................................ 210
StabiliTrak®Service.................................. 210
Tire Pressure........................................... 211
Lighting
Entry........................................................ 184
Exit.......................................................... 184
Lights.......................................................... 180
Flash-to-Pass........................................... 175
High/Low Beam Changer ......................... 175
On Reminder........................................... 181
Loading Your Vehicle................................... 356
Locking Rear Axle....................................... 313
Lockout Protection....................................... 103
566