2007 CHEVROLET SUBURBAN charging

Warning Lights, Gages, and Indicators..... 242
Instrument Panel Cluster........................... 243
Speedometer and Odometer...................... 244
Trip Odometer........................................... 244
Tachometer............................................... 244
Safety Belt Reminder Light........................ 244
Passenger Safety Belt Reminder Light....... 245
Airbag Readiness Light............................. 245
Passenger Airbag Status Indicator............. 246
Charging System Light.............................. 248
Voltmeter Gage......................................... 249
Brake System Warning Light..................... 249
Anti-Lock Brake System Warning Light...... 251
StabiliTrak
®Indicator Light......................... 252
Engine Coolant Temperature Gage............ 252
Tire Pressure Light.................................... 253
Malfunction Indicator Lamp........................ 253
Oil Pressure Gage..................................... 256Oil Pressure Light..................................... 257
Security Light............................................ 258
Fog Lamp Light......................................... 258
Cruise Control Light.................................. 258
Highbeam On Light................................... 259
Tow/Haul Mode Light................................ 259
Fuel Gage................................................. 259
Low Fuel Warning Light............................ 260
Driver Information Center (DIC).................. 260
DIC Operation and Displays
(With DIC Buttons)................................. 261
DIC Operation and Displays
(Without DIC Buttons)............................ 267
DIC Warnings and Messages.................... 270
DIC Vehicle Customization
(With DIC Buttons)................................. 280
Section 3 Instrument Panel
200

Entry Lighting
Your vehicle has an illuminated entry feature.
When the doors are opened, the dome lamps will
come on if the dome override button is in the
extended position. If the dome override button is
pressed in, the lamps will not come on.
Exit Lighting
With exit lighting, the interior lamps will come on
when the key is removed from the ignition. They
will turn off automatically in 20 seconds. The lights
will not come on if the dome override button is
pressed in.
Reading Lamps
If your vehicle has reading lamps they are located
on the overhead console.
To turn on the reading lamps, press the button
located next to each lamp. To turn them off, press
the button again.Your vehicle may also have reading lamps in other
locations. To turn the lamps on or off, press the
button located next to the lamp.
The lamps are xed and cannot be adjusted.
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.
220

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 270.
Battery Run-Down Protection
This feature shuts off the dome, and reading
lamps if they are left on for more than 10 minutes
when the ignition is off. This will keep the
battery from running down.
221

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. See
Airbag Readiness Light on page 245.
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 the
generator, the generator drive belt, or another
electrical problem. Have it checked right away.
Driving while this light is on could drain your
battery.
When this light comes on, the Driver Information
Center (DIC) will also display the SERVICE
BATTERY NOT CHARGING SYSTEM message.
SeeDIC Warnings and Messages on page 270for
more information.
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, to reduce the drain on
your battery.
248

Voltmeter Gage
When your engine is not
running, but the ignition
is in RUN, this gage
shows your battery’s
state of charge in
DC volts.
When the engine is running, the gage shows the
condition of the charging system. The charging
system regulates voltage based on the state of the
battery for improved fuel economy and battery
life. 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.
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 at
an idle 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 full power. If
there is a problem with the battery charging
system, this light will come on or the SERVICE
BATTERY CHARGING SYSTEM DIC message will
display. SeeDIC Warnings and Messages on
page 270andCharging System Light on page 248
for more information.
Brake System Warning Light
With the ignition on, the brake system warning
light will come on when you set the parking brake.
If you try to drive with the parking brake engaged,
a chime will sound when the vehicle speed is
greater than 5 mph (8 km/h).
Your vehicle’s hydraulic brake system is divided
into two parts. If one part is not working, the other
part can still work and stop you. For good
braking, though, you need both parts working well.
If the warning light comes on and a chime
sounds there could be a brake problem. Have
your brake system inspected right away.
249

SERVICE BATTERY CHARGING
SYSTEM
On some vehicles, 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. See
Charging System Light on page 248. Driving with
this problem could drain the battery. Turn off all
unnecessary accessories. Have the electrical
system checked as soon as possible. See your
dealer.
SERVICE BRAKE SYSTEM
This message displays along with the brake
system warning light if there is a problem with the
brake system. SeeBrake System Warning
Light on page 249. 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 as soon as possible.
See your dealer.
SERVICE BRAKES SOON
This message displays if there is a problem 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.
SERVICE PARK ASSIST
If your vehicle has the Ultrasonic Rear Parking
Assist (URPA) system, this message displays
if there is a problem with the URPA system. Do
not use this system to help you park. See
Ultrasonic Rear Parking Assist (URPA) on
page 222for more information. See your dealer
for service.
276

Tow/Haul Mode
Tow/Haul is a feature that assists when pulling a
heavy trailer or a large or heavy load. The
purpose of the Tow/Haul mode is to:
Reduce the frequency and improve the
predictability of transmission shifts when
pulling a heavy trailer or a large or heavy load.
Provide the same solid shift feel when pulling a
heavy trailer or a large or heavy load as when
the vehicle is unloaded.
Improve control of vehicle speed while
requiring less throttle pedal activity when
pulling a heavy trailer or a large or heavy load.
Increase the charging system voltage to assist
in recharging a battery installed in a trailer.Press this button at the end of the shift lever to
enable/disable the tow/haul mode.
A light on the instrument
panel will illuminate to
indicate that tow/haul
mode has been
selected.
424

Heavy-Duty Trailer Wiring Harness
Package
Your vehicle is equipped with the seven-wire
trailer towing harness. This harness with a
seven-pin universal trailer connector is attached to
a bracket on the hitch platform.The seven-wire harness contains the following
trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Taillamps
White: Ground
Light Green: Back-up Lamps
Red: Battery Feed*
Dark Blue: Trailer Brake*
*The fuses for these two circuits are installed in
the underhood electrical center, but the wires
are not connected. They should be connected by
your dealer or a qualied service center.
If you are charging a remote (non-vehicle) battery,
press the tow/haul mode button located at the
end of the shift lever. This will boost the vehicle
system voltage and properly charge the battery. If
the trailer is too light for tow/haul mode, you
can turn on the headlamps as a second way to
boost the vehicle system and charge the battery.
439