2007 GMC YUKON XL charging

Instrument Panel Overview.........................186
Hazard Warning Flashers...........................188
Other Warning Devices..............................188
Horn...........................................................189
Tilt Wheel..................................................189
Turn Signal/Multifunction Lever...................190
Turn and Lane-Change Signals..................191
Headlamp High/Low-Beam Changer...........192
Flash-to-Pass.............................................192
Windshield Wipers......................................192
Rainsense™ II Wipers................................193
Windshield Washer.....................................194
Rear Window Wiper/Washer.......................195
Cruise Control............................................196
Exterior Lamps...........................................199
Headlamps on Reminder............................200
Daytime Running Lamps (DRL)..................201
Automatic Headlamp System......................201
Fog Lamps.................................................202
Auxiliary Roof Mounted Lamp.....................203
Instrument Panel Brightness.......................203
Dome Lamps.............................................203
Dome Lamp Override.................................204
Entry Lighting.............................................204
Exit Lighting...............................................204Reading Lamps..........................................204
Battery Run-Down Protection......................204
Ultrasonic Rear Parking Assist (URPA).......205
Accessory Power Outlet(s).........................208
Ashtray(s) and Cigarette Lighter.................209
Climate Controls..........................................210
Climate Control System..............................210
Dual Automatic Climate Control System.....213
Outlet Adjustment.......................................220
Rear Air Conditioning and Heating
System...................................................220
Rear Air Conditioning and Heating System
and Electronic Climate Controls................222
Warning Lights, Gages, and Indicators......224
Instrument Panel Cluster............................225
Speedometer and Odometer.......................226
Trip Odometer............................................226
Tachometer................................................226
Safety Belt Reminder Light.........................226
Passenger Safety Belt Reminder Light.......227
Airbag Readiness Light..............................227
Passenger Airbag Status Indicator..............228
Charging System Light...............................230
Voltmeter Gage..........................................231
Section 3 Instrument Panel
183

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 227.
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 DIC will also display
the SERVICE BATTERY NOT CHARGING
SYSTEM message. SeeDIC Warnings and
Messages on page 254for 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.
230

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 254
andCharging System Light on page 230for more
information.
231

SERVICE BATTERY CHARGING
SYSTEM
On some vehicles, if there is a problem with the
battery charging system, this message will display.
Under certain conditions, the battery warning
light may also turn on in the instrument panel
cluster. SeeCharging System Light on page 230.
Driving with this problem could drain the battery.
Turn off all unnecessary accessories. Have
the electrical system checked as soon as possible.
See your GM dealer.
SERVICE BRAKE SYSTEM
If there is a problem with the brake system, this
message will display along with the brake system
warning light. SeeBrake System Warning Light
on page 232. 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 GM dealer.
SERVICE BRAKES SOON
If there is a problem with the brake system, this
message will display. 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 GM dealer.
SERVICE PARK ASSIST
If your vehicle has the Ultrasonic Rear Parking
Assist (URPA) system, this message will display
if there is a problem with the URPA system. Do not
use this system to help you park. SeeUltrasonic
Rear Parking Assist (URPA) on page 205for more
information. See your GM dealer for service.
260

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.
Your vehicle is equipped with a button at the end of
the shift lever which, when pressed, enables
tow/haul. Your vehicle may be equipped with
Autoride
®which further improves your vehicle’s ride
while towing. SeeAutoride®on page 405for more
information. When the button is pressed, a light on
the instrument panel will illuminate to indicate that
Tow/Haul has been selected. Tow/Haul may be
turned off by pressing the button again, at which
time the indicator light on the instrument panel will
turn off. The vehicle will automatically turn off
Tow/Haul every time it is started.
Tow/Haul is designed to be most effective when
the vehicle and trailer combined weight is at
least 75 percent of the vehicle’s Gross Combined
Weight Rating (GCWR). See Weight of the
Trailer later in this section.
407

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.
421

C
Calibration............................................157, 160
California Fuel.............................................. 429
California Proposition 65 Warning................. 427
Canadian Owners............................................ 3
Capacities and Specications....................... 548
Carbon Monoxide.................123, 125, 155, 405
Care of
Safety Belts.............................................. 531
Your CD and DVD Player......................... 337
Your CDs and DVDs................................. 336
Cargo Cover................................................ 176
Cargo Management System......................... 178
Center Console Storage Area....................... 175
Center Front Passenger Position,
Safety Belts................................................ 53
Center Seat................................................... 19
Chains, Tire................................................. 506
Charging System Light................................. 230
Check
Engine Light............................................. 236
Checking Things Under the Hood................. 434
Chemical Paint Spotting............................... 536
Child Restraints
Child Restraint Systems.............................. 68
Infants and Young Children......................... 64Child Restraints (cont.)
Lower Anchors and Tethers for Children..... 73
Older Children............................................ 61
Securing a Child Restraint in a
Rear Seat Position.................................. 83
Securing a Child Restraint in the
Center Front Seat Position...................... 85
Securing a Child Restraint in the
Right Front Seat Position........................ 86
Where to Put the Restraint......................... 72
Cigarette Lighter........................................... 209
Cleaning
Aluminum or Chrome-Plated Wheels......... 534
Exterior Lamps/Lenses.............................. 532
Fabric/Carpet............................................ 529
Finish Care............................................... 532
Inside of Your Vehicle............................... 528
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 531
Leather..................................................... 530
Tires......................................................... 535
Underbody Maintenance............................ 536
Washing Your Vehicle............................... 532
Weatherstrips............................................ 531
Windshield, Backglass, and
Wiper Blades......................................... 534
Climate Control System................................ 210
595

Lamps (cont.)
Dome Lamp Override................................ 204
Exterior..................................................... 199
Fog ........................................................... 202
Reading.................................................... 204
LATCH System
Child Restraints.......................................... 73
Level Control................................................ 404
License Plate Lamps.................................... 480
Liftgate, Power............................................. 125
Liftgate/Liftglass............................................ 123
Liftglass/Liftgate............................................ 123
Light
Airbag Readiness...................................... 227
Anti-Lock Brake System Warning.............. 233
Brake System Warning............................. 232
Charging System...................................... 230
Cruise Control........................................... 242
Fog Lamp................................................. 241
Highbeam On........................................... 242
Low Fuel Warning..................................... 243
Malfunction Indicator................................. 236
Oil Pressure.............................................. 240
Passenger Airbag Status Indicator............. 228
Passenger Safety Belt Reminder............... 227Light (cont.)
Safety Belt Reminder................................ 226
Security.................................................... 241
StabiliTrak
®Indicator................................. 234
Tire Pressure............................................ 235
Tow/Haul Mode......................................... 242
Lighting
Entry......................................................... 204
Exit........................................................... 204
Loading Your Vehicle.................................... 390
Locking Rear Axle........................................ 347
Lockout Protection........................................ 122
Locks
Delayed Locking....................................... 121
Door......................................................... 120
Lockout Protection.................................... 122
Power Door.............................................. 121
Programmable Automatic Door Locks........ 121
Rear Door Security Locks......................... 122
Loss of Control............................................ 355
Low Fuel Warning Light............................... 243
Luggage Carrier........................................... 175
Lumbar
Power Controls........................................... 11
600