interior lights GMC YUKON XL DENALI 2001 Owners Manual

ii
Table of Contents
Windows
Keys and Door Locks
Keyless Entry System
Liftgate
Automatic Transmission Operation
All-Wheel Drive
Parking Brake
Tilt Wheel
Turn Signal/Multifunction Lever
Windshield WipersCruise Control
Exterior and Interior Lamps
Mirrors
Storage Compartments
Convenience Net/Luggage Carrier
Accessory Power Outlets
OnStar® System (If Equipped)
Sunroof (If Equipped)
HomeLink® Transmitter
Instrument Panel, Warning Lights and Gages Seats and Seat Controls
Safety BeltsAir Bag Systems
Restraint Systems for Children
Section
1
Section
2
Seats and Restraint Systems
Features and Controls

2-
2-1
Section 2 Features and Controls
Here you can learn about the many standard and optional features on your vehicle, and information on starting,
shifting and braking. Also explained are the instrument panel and the warning systems that tell you if everything is
working properly
-- and what to do if you have a problem.
2
-2 Windows
2
-4 Keys
2
-6 Door Locks
2
-8 Keyless Entry System
2
-12 Liftgate/Liftgate Glass
2
-12 Theft
2
-14 Content Theft-Deterrent
2
-15 Passlock

2-16 New Vehicle ªBreak Inº
2
-16 Ignition Positions
2
-17 Starting Your Engine
2
-19 Engine Coolant Heater (If Equipped)
2
-20 Automatic Transmission Operation
2
-23 Parking Brake
2
-24 Shifting Into PARK (P)
2
-27 Shifting Out of PARK (P)
2
-27 Parking Over Things That Burn
2
-28 Engine Exhaust2
-28 Running Your Engine While You're Parked
2
-30 Locking Rear Axle
2
-30 All-Wheel Drive
2
-30 Tilt Wheel
2
-31 Turn Signal/Multifunction Lever
2
-37 Exterior Lamps
2
-40 Interior Lamps
2
-42 Mirrors
2
-46 Storage Compartments
2
-53 OnStar
System (If Equipped)
2
-57 Sunroof (If Equipped)
2
-58 HomeLink
Transmitter
2
-62 The Instrument Panel - Your
Information System
2
-64 Instrument Panel Cluster
2
-65 Warning Lights, Gages and Indicators
2
-77 Message Center
2
-83 Secondary Information Center (SIC)

2-40 Fog Lamps
Use the fog lamps for better vision in foggy or misty
conditions. Your parking lamps and/or low
-beam
headlamps must be on for your fog lamps to work.
The fog lamp button is
located on the left side
of the instrument panel.
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 your fog lamps in
the dark without turning on your headlamps.The fog lamps will go off whenever your 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, you will need to press the fog
lamp button again.
Interior Lamps
Instrument Panel Intensity Control
The instrument panel intensity control is located to the
right of the headlamp knob.
Turn the thumbwheel up to adjust the instrument panel
lights. To turn on the dome lamps (with the vehicle's
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.

3-3
Mode Knob - Automatic Operation
The right knob on the control panel allows you to
choose the direction of air delivery. When the system
is set in AUTO mode, sensors will control the air
delivery mode. Air will come primarily from the floor
or instrument panel outlets, with some air directed to
the windshield to prevent fogging.
When the system is in AUTO mode, the air conditioning
light will turn on, and the recirculation and outside air
lights turn off. With the system in full auto control
(both the fan and mode knobs in AUTO), you still
have the ability to override any function. However,
continually overriding the outside air or the A/C
compressor will limit the ability of the system to
cool the vehicle quickly.
If you push a button for a function which is not
available, the light next to that button will flash
three times to alert you that it's not available.
To find your comfort zone, start with the 74
F (23
C)
setting and allow about 20 minutes for the system to
adjust the temperature if necessary.With the automatic setting, the air conditioning
compressor automatically cycles when needed to cool
the air. In cold weather, when the system senses the need
for heat, the airflow will be directed out of the floor
outlets. As the interior temperature approaches a desired
setting, the fan speed will decrease. To maintain interior
comfort, the airflow will adjust between the instrument
panel air outlets and floor outlets. On bright sunny days
in cool weather, the airflow may come out of the air
conditioning and floor outlets (bi
-level mode) to
maintain comfort and prevent stuffiness.
To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on the outside air
temperature, engine coolant temperature or the time
since the engine was last started. As the coolant warms
up, the fan speed will gradually increase and air will
flow from the heater outlets, with some airflow to
the windshield to prevent fogging under most
normal conditions.
Be careful not to put anything over the solar sensor
located around the center of the instrument panel.
This sensor is used by the automatic system to
regulate temperature.

6-61
Center Instrument Panel Utility Block
The center instrument panel utility block is located
underneath the instrument panel, to the left of the
steering column.Relay Name Usage
SEO Special Equipment Option
HTD ST Heated Seats
HDLNR Headliner
VANITY Headliner Wiring
TRAILER Trailer Brake Wiring
PWR ST Power Seats
YE9 Not Used
UPF Upfitter
PARK LAMP Parking Lamps
FRT PRK EXPT Not Used
SPARE 2 Not Used
PUDDLE LP Puddle Lamps
SL RIDE Not Used
SPARE 3 Not Used
INADV PWR Interior Lights Feed
CTSY LP Courtesy Lamps
CEL PHONE Cellular Telephone Wiring