2003 GMC SIERRA DENALI Owners Manual

Automatic Headlamp System
When it is dark enough outside, your automatic
headlamp system will turn on your headlamps at the
normal brightness along with other lamps such as
the taillamps, sidemarker, parking lamps and the
instrument panel lights. The radio lights will also be dim.
Your vehicle is equipped with a headlamp off delay,
which will keep the headlamps on for a short time after
the ignition is turned
off. For more information see
DIC Operation and Displays on page 3-43.
Your vehicle has a light sensor located on the top of the
instrument panel in the defroster grille. Be sure it is
not covered, or the system will be on whenever
the ignition is on.
The system may also turn on your headlamps when
driving through a parking garage, heavy overcast
weather or a tunnel. This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running
Lamps (DRL) and the automatic headlamp systems
so
that driving under bridges or bright overhead street
lights does not affect the system. The DRL and
automatic headlamp system will only be affected when
the light sensor sees a change in lighting lasting
longer than the delay. one
minute for the automatic headlamp system to
change to DRL
if it is bright enough outside. During that
delay, your instrument panel cluster may not be as
bright as usual. Make sure your instrument panel
brightness control is in the full bright position. See
“Instrument Panel Brightness Control’’ under
Interior
Lamps on page
3-15.
To idle your vehicle with the automatic headlamp
system off, turn the control to the
off position.
You may be able to turn off your automatic headlamp
system. See Daytime Running Lamps (DRL) later in this
section for more information.
Your headlamps will also stay on after you exit the
vehicle. You can program this feature using the Driver
lnforrnation Center. See
Driver lnforrnation Center @IC)
on page
3-43
As with any vehicle, you should turn on the regular
headlamps
if you need them.
Lamps On Reminder
A reminder chime will sound when your headlamps or
parking lamps are manually turned on and your
ignition is off, in LOCK, ACCESSORY, or your door is
open. To disable the chime, turn the light
off, then
back on.
If you start your vehicle in a dark garage, the automatic
headlamp system will come on immediately. Once
you leave the garage, it will take approximately
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Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. DRL can be helpful
in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada.
The DRL system will come on when the following
conditions are met:
The ignition is on,
0 the exterior lamp control is in AUTO
0 the automatic transmission is not in PARK (P), and
0 the light sensor determines it is daytime.
When the
DRL are on, only your DRL lamps will be on.
The taillamps, sidemarker and other lamps won’t be
on. The instrument panel won’t be lit up either. When
it begins to
get dark, the automatic headlamp
system will switch from DRL to the headlamps or the last
chosen headlamp setting that was used.
W-hen you turn the exterior iamp controi
to off, the
headlamps will go off, and your DRL lamps will
illuminate, provided it is not dark outside.
Shifting the transmission into PARK
(P) will allow you to
idle the vehicle with the DRL off. The DRL will stay
off until you release the parking brake or shift the
transmission out of PARK (P).
Puddle Lamps
Your vehicle is equipped with puddle lamps to help you
see the area near the base
of the front doors when it
is dark out. The puddle lamps will illuminate when a door
is opened or when you press the UNLOCK button on
the keyless entry transmitter.
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Fog Lamps
You can use your vehicle’s fog lamps for better vision in
foggy or misty conditions.
The fog lamp button is
located on the left side of
your instrument panel.
Your parking lamps and/or low-beam headlamps must
be on for your fog lamps to work.
Press the button to turn the fog lamps on while the
headlamps are on. Press the button again to turn them
off. An indicator light will glow in the button when
the fog lamps are on.
Remember, fog lamps alone will not give
off as much
light as your headlamps. Never use the fog lamps in the
dark without turning on the headlamps. The
fog lamps will go
off whenever the high-beam
headlamps come on. When the high beams go
off, the
fog lamps will come on again.
The fog lamps will be cancelled after the ignition is
turned
off. If you still want to use the fog lamps after you
restart the vehicle, press the fog lamp button again.
Cargo Lamp
The cargo lamp button is
located on the left side of
the instrument panel.
~ Press the button to turn
the cargo lamp on.
Press the button again to
turn it
off.
An indicator light on the instrument panel cluster will
illuminate when the cargo lamp is turned on, and
the ignition key is turned to RUN.
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Front Reading Lamps Interior Lamps
Instrument Panel Brightness Control
-g-: This feature controls the brightness of the
instrument panel lights.
The thumbwheel for this feature is located next
to the
exterior lamp control.
Turn the thumbwheel up to adjust the instrument panel
lights and return the radio display to full brightness
when the headlamps or parking lamps are on. To turn
on the dome lamps, with the vehicle doors closed,
turn the thumbwheel all the way up.
Exit Lighting
With exit lighting, the interior lamps will come on when
you remove the key from the ignition. The lamps
will not come on
if the dome override button is pressed
in.
Entry Lighting
Your vehicle is equipped with an illuminated entry
feature.
When a door is opened, the dome lamps and puddle
lamps will come on
if the dome override button is in the
out position. If the dome override button is pressed
in, the lamps will not come on. Your
vehicle has front reading lamps located in the
overhead console. Press the round button located next
to the lamp to turn the lamp on. The lamps can be
adjusted to point in the direction you want them to go.
Press the button again to turn the lamp
off.
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Dome Lamps
The dome lamps will come on when you open a door
and the dome override button is
in the out position.
You can also turn the dome lamps on by turning
the thumbwheel, located next to the exterior lamps
control, all the way up. In this position, the dome lamps
will remain on whether the doors are opened or
closed.
*: You can use the dome override button, located
below the exterior lamps control, to set the dome lamps
to come on automatically when the doors are opened,
or to remain
off. To turn the lamps off, press the button
to the
in position. With the button in this position, the
dome lamps will remain
off when the doors are open. To
return the lamps to automatic operation, press the
button again and return the button to the out position.
With the button
in this position, the dome lamps
will come on when you open a door.
Battery Run-Down Protection
This feature shuts off the dome, reading, glove box, and
underhood lamps
if they are left on for more than
10 minutes when the ignition is turned off. The cargo
lamp will shut
off after 20 minutes. This will keep
your battery from running down.
Accessory Power Outlets
With accessory power outlets you can plug in auxiliary
electrical equipment such as a cellular telephone or
other devices designed to operate with vehicle electrical
systems.
Your vehicle is equipped with several accessory power
outlets. The front outlet is located next to the floor
console. Lift up on the door to access the outlet.
The second outlet is located
in the center console. Press
the button on the side
of the console door to access
the outlet. See
Center Console Storage Area on
page 2-39 for more information.
There is also one accessory power outlet located on the
rear of the center console. Lift up on the doors to
access the outlets.
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Certain electrical accessories may not be compatible
with the accessory power outlets and could result
in blown vehicle or adapter fuses.
If you experience a
problem, see your dealer for additional information
on accessory power outlets.
Notice: Adding some electrical equipment to your
vehicle can damage
it or keep other things from
working
as they should. This wouldn’t be covered by
your warranty. Check with your dealer before
adding electrical equipment, and never use anything
that exceeds the amperage rating.
When adding electrical equipment, be sure to follow the
proper installation instructions included with the
equipment.
Notice: Power outlets are designed for accessory
plugs only. Do not hang any type of accessory
or accessory bracket from the plug. Improper use of
the power outlet can cause damage not covered by your warranty.
Ashtrays and Cigarette Lighter
The ashtray is located in the center console. Press the
raised area on the access door to use the ashtray.
To remove the ashtray first locate the indent on the right
side of the ashtray. Then, place an instrument, such
as a pen, in the indent and pry the ashtray out.
Notice: Don’t put papers or other flammable items
into your ashtrays. Hot cigarettes or other smoking
materials could ignite them, causing a damaging fire.
To use the cigarette lighter, push it in all the way, and
let go. When it’s ready, it will pop back out by itself.
Notice: Don’t hold a cigarette lighter
in with your
hand while
it is heating. If you do, it won’t be able to
back away from the heating element when
it’s
ready. That can make it overheat, damaging the
lighter and the heating element.
3-1 7

Climate Controls
Dual Automatic Climate Control
System
Your vehicle may have the optional dual automatic
climate control system. With this system you can control
the heating, cooling and ventilation for your vehicle.
If your vehicle is equipped with the dual automatic
climate control system, memory seats, and memory
mirrors, you can store and recall the climate control
settings for temperature, air delivery mode, and
fan speed for two different drivers. The personal choice
settings recalled are determined by the transmitter
used to enter the vehicle. After the button with the
unlock symbol on a remote keyless entry transmitter
is pressed, the climate control will adjust to the last
settings of the identified driver. The settings can also be
changed by pressing one of the memory buttons
(1 or 2) located on the driver’s door. When adjustments
are made, the new settings are automatically saved
for that driver.
A 8fj? v (Fan): Press this button to increase or
decrease the fan speed.
0 (Off): Press this button to turn off the entire climate
control system. Outside air will still enter the vehicle, and
will be directed to the floor. This direction can be changed
by pressing the mode button. The temperature can also
be adjusted using either temperature knob. Press the up
or down arrows on the fan switch, the defrost button, the
AUTO button, or the air conditioning button to turn the
system on when it is
off.
,% 4d (Mode): Press this button to manually select the air
delivery mode to the floor, panel, or windshield outlets.
This system will stay in the selected mode until the mode
button is pressed again, or the AUTO button, defrost
button, or the off button is pressed. Air delivery mode can
be adjusted while the system is off. A five second status
display will indicate the current mode.
3-1 8

Display: In the full AUTO mode, the automatic dual
climate control system display will show the driver set
temperature and an arrow pointing to the driver’s side. An
arrow pointing to the passenger’s side will display
if both
sides are set to the same temperature.
If the temperature
settings are not the same, the opposite side temperature
setting will be displayed for an additional five seconds.
During the five second status display the current mode
and blower speed will be displayed.
Driver’s Side Temperature Knob: Turn this knob
clockwise or counterclockwise to manually raise or lower
the temperature on the driver’s side of the vehicle.
The display will show the temperature setting decreasing
or increasing and an arrow pointing to the driver. The
temperature can be adjusted even
if the system is
turned
off. If the passenger’s set temperature has not
been adjusted this knob controls both the driver’s
and passenger’s air temperature. The temperature to
the rear seat area is controlled by using this knob.
Passenger’s Side Temperature Knob: Turn this knob
clockwise or counterclockwise to manually raise or
lower the temperature on the passenger’s side of the
vehicle. The display will show the temperature
setting decreasing or increasing and an arrow pointing
to the passenger. The temperature can be adjusted
even
if the system is turned off. Once this knob is used,
the passenger’s temperature will remain independent
of the driver’s until the AUTO button is pressed and held
for approximately four seconds.
Automatic Operation
AUTO (Automatic): When automatic operation is
active the system will control the inside temperature, the
air delivery, and the fan speed.
Use the steps below to place the entire system in
automatic mode:
1. Press the AUTO button.
When AUTO is selected, the display will change to
show the current driver’s set temperature,
delivery mode and fan speed. Press the AUTO
button again within five seconds to display
the passenger’s set temperature.
If the driver and passenger’s temperature settings
are not the same, the opposite side temperature
setting will be displayed for an additional five
seconds. To make the passenger’s temperature the
same as the driver’s press and hold the AUTO
button for approximately four seconds.
When auto is selected, the air conditioning
operation and air inlet will be automatically
controlled. The air conditioning compressor will run
when the outside temperature is over approximately
40°F (4°C). The air inlet will normally be set to
outside air. If it’s hot outside, the air inlet may
automatically switch to recirculate inside air to help
quickly cool down your vehicle. The light on the
button will illuminate in recirculation.
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