2004 GMC SIERRA DENALI charging

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 air bag off indicator and the air bag
readiness light ever come on together, it
means that something may be wrong with the
air bag 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 air bag. See²Air Bag Readiness Light²in
the Index.
Battery Warning Light
If this light is displayed
when the engine is
running, you may have a
problem with your charging
system.
The battery display will also stay on while the key is in
RUN until the engine is started.
If the light stays on after starting the engine it could
indicate a problem with the generator drive belt, or some
other charging system problem. Have it checked right
away. Driving with this light displayed could drain
your battery.
If you must drive a short distance with this light
displayed, it helps to turn off all your accessories, such
as the radio and the air conditioner.
3-35

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. 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 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.
3-36

BATTERY NOT CHARGING
If the battery is not charging during operation, this
message will appear on the DIC. Driving with this
problem could drain your battery. Have the electrical
system checked as soon as possible. Pressing the
select button will acknowledge this message and clear it
from the DIC display.
BUCKLE SEATBELT
If your vehicle is equipped with the passenger sensing
system, this message reminds you to buckle the
driver's and/or passenger's seatbelt. See
Passenger
Sensing System on page 1-73. The message will come
on and a chime will sound when the ignition is in
RUN and the following conditions occur:
·The driver's seatbelt is unbuckled.
·The driver's seatbelt is unbuckled and the
passenger's seatbelt is unbuckled with the
passenger airbag enabled.
Press the select button to acknowledge this message
and clear it from the DIC display.
BUCKLE PASSENGER
If your vehicle is equipped with the passenger sensing
system, this message reminds you to buckle the
passenger's seatbelt. See
Passenger Sensing System
on page 1-73. This message will come on and a
chime will sound when the ignition is in RUN and the
driver's seatbelt is buckled and the passenger's seatbelt
is unbuckled with the passenger airbag enabled.
Press the select button to acknowledge this message
and clear it from the DIC display.
CHANGE ENGINE OIL
This message is displayed for 10 seconds at the start of
each ignition cycle when the engine oil needs to be
changed.
When you change the engine oil, be sure to reset the
CHANGE ENGINE OIL message. See
Engine Oil, When
to ChangeunderEngine Oil on page 5-11.
CARGO LAMP ON
If the cargo lamp is on, this message will appear on the
DIC and you will hear a chime. Turn off the vehicle
and check the liftgate. Restart the vehicle and check for
the message on the DIC display. Pressing the select
button will acknowledge this message and clear it from
the DIC display.
3-58

Audio System(s).............................................3-64
Audio Steering Wheel Controls......................3-85
Care of Your Cassette Tape Player................3-87
Care of Your CD Player...............................3-88
Care of Your CDs........................................3-88
CD Changer...............................................3-82
Chime Level Adjustment...............................3-88
Fixed Mast Antenna.....................................3-88
Navigation/Radio System..............................3-79
Radio with Cassette and CD.........................3-65
Rear Seat Audio (RSA)................................3-80
Setting the Time..........................................3-64
Theft-Deterrent Feature................................3-85
Understanding Radio Reception.....................3-86
XMŸ Satellite Radio Antenna System............3-88
Automatic Dimming Mirror Operation..................2-32
Automatic Headlamp System............................3-13
Automatic Transmission
Fluid..........................................................5-18
Operation...................................................2-22
B
Backing Up....................................................4-66
Battery..........................................................5-40
BATTERY NOT CHARGING.............................3-58
Battery Replacement......................................... 2-5
Battery Run-Down Protection............................3-18Battery Warning Light......................................3-35
Before Leaving on a Long Trip.........................4-38
Before You Go Off-Roading..............................4-18
Brake
Parking......................................................2-25
System Warning Light..................................3-37
Brake Adjustment............................................5-39
Brake Fluid....................................................5-36
Brake Pedal Travel.........................................5-39
Brake Wear...................................................5-39
Brakes..........................................................5-36
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-18
BUCKLE PASSENGER....................................3-58
BUCKLE SEATBELT.......................................3-58
Bulb Replacement...........................................5-49
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp............................................5-54
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-50
Halogen Bulbs............................................5-49
Headlamps.................................................5-49
Pickup Box Identi®cation and Fender
Marker Lamps.........................................5-55
Replacement Bulbs......................................5-57
Roof Marker Lamps.....................................5-52
Taillamps....................................................5-56
Buying New Tires...........................................5-70
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