2005 GMC YUKON XL keyless

Remember, the theft-deterrent system won’t activate if
you lock the doors with a key or use the manual
door lock. It activates only if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that
you can start your vehicle with the correct ignition key if
the alarm has been set off.
Here’s how to avoid setting off the alarm by accident:
If you don’t want to activate the theft-deterrent
system, the vehicle should be locked with the door
keyafterthe doors are closed.
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set off the alarm.
If you set off the alarm by accident, unlock any door with
the key. You can also turn off the alarm by pressing
unlock on the remote keyless entry transmitter. The alarm
won’t stop if you try to unlock a door any other way.
Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the security light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set off the alarm.
While the alarm is set, the power door unlock switch is
not operational.
If the alarm does not sound when it should but the
headlamps ash, check to see if the horn works. The
horn fuse may be blown. To replace the fuse, seeFuses
and Circuit Breakers on page 5-105.
If the alarm does not sound or the headlamps do not
ash, the vehicle should be serviced by your dealer.
2-18

Automatic Headlamp System
When it is dark enough outside and the headlamp switch
is in AUTO, your automatic headlamp system will turn on
your headlamps at the normal brightness along with other
lamps such as the taillamps, sidemarker, parking lamps,
roof marker lamps and the instrument panel lights. The
radio lights will also be dim.
To turn off the automatic headlamp system, turn the
exterior lamps switch to the off position and then release.
Your vehicle has a light sensor located on the top of the
instrument panel. 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.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 one minute for
the automatic headlamp system to change to DRL if it is
light 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. SeeInstrument Panel Brightness on page 3-17.
Puddle Lamps
Your vehicle may be 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. The lamps
will time out or turn off once the engine is started.
3-16

ENGINE COOLANT HOT
If the cooling system temperature gets hot, this message
will appear in the DIC. Stop the vehicle and let the engine
idle in PARK (P) to allow the coolant to reach a safe
temperature. This message will clear when the coolant
temperature drops to a safe operating temperature.
ENGINE OVERHEATED
If the engine cooling system reaches unsafe
temperatures for operation, this message will appear in
the DIC and you will hear a chime. Stop and turn off
the vehicle as soon as it is safe to do so to avoid severe
damage. This message will clear when the engine
has cooled to a safe operating temperature.
Notice:If you drive your vehicle while the engine is
overheating, severe engine damage may occur. If
an overheat warning appears on the instrument
panel cluster and/or DIC, stop the vehicle as soon
as possible. Do not increase the engine speed above
normal idling speed. SeeEngine Overheating on
page 5-28for more information.
FUEL LEVEL LOW
If the fuel level is low, this message will appear on the
DIC and you will hear a chime. Refuel as soon as
possible. Pressing any of the four DIC buttons, if
equipped, will clear the message from the DIC display.
If your vehicle is not equipped with the four DIC
buttons, pressing the trip odometer reset stem will clear
the message from the DIC display. It will also clear
itself after 10 seconds until the next ignition cycle. The
low fuel light near the fuel gage will still remain on
in either case. SeeFuel Gage on page 3-45,Fuel on
page 5-5andLow Fuel Warning Light on page 3-45.
KEYFOB X BATTERY LOW
If a remote keyless entry transmitter battery is low, this
message will appear on the DIC. The battery needs
to be replaced in the transmitter. See “Battery
Replacement” underRemote Keyless Entry System
Operation on page 2-6. Pressing any of the four
DIC buttons, if equipped, will clear the message from
the DIC display. If your vehicle is not equipped with the
four DIC buttons, pressing the trip odometer reset
stem will clear the message from the DIC display.
3-53

Unlock Doors
Press the customization button until UNLOCK DOORS
appears in the display. To select your preference for
automatic unlocking, press the select button while
UNLOCK DOORS is displayed on the DIC. Pressing the
select button will scroll through the following choices:
UNLOCK DOORS: IN PARK (default):All of the doors
will unlock when the vehicle is shifted into PARK (P).
UNLOCK DRIVER: IN PARK:The driver’s door will be
unlocked when the vehicle is shifted into PARK (P).
UNLOCK DOORS: KEY OUT:All of the doors
will unlock when the key is taken out of the ignition.
UNLOCK DOORS: MANUALLY:The doors will not be
unlocked automatically.
Choose one of the available options and press the
customization button while it is displayed on the DIC to
select it and move on to the next feature. For more
information on automatic door locks, seeProgrammable
Automatic Door Locks on page 2-10.
Door Lock Delay
If your DIC does not have this feature, you can still
program the delayed locking feature. SeeDelayed
Locking on page 2-10for more information.When locking the doors with the power lock switch or
the remote keyless entry transmitter and a door or
the liftgate is open, the delayed locking feature will delay
locking the doors and liftgate until ve seconds after
the last door is closed.
Press the customization button until DOOR LOCK
DELAY appears in the display. To select your
preference for delayed locking, press the select button
while DOOR LOCK DELAY is displayed on the DIC.
Pressing the select button will scroll through the
following choices:
DOOR LOCK DELAY: OFF (default):The doors will
lock immediately when pressing the power lock switch or
the lock button on the remote keyless entry transmitter.
DOOR LOCK DELAY: ON:The doors will not lock until
ve seconds after the last door or the liftgate is closed.
You will hear three chimes to signal that the delayed
locking feature is in use. You can temporarily override
delayed locking by pressing the lock button on the door or
the remote keyless entry transmitter a second time.
Choose one of the available options and press the
customization button while it is displayed on the DIC to
select it and move on to the next feature. For more
information on automatic door locks, seeProgrammable
Automatic Door Locks on page 2-10.
This feature will not operate if the key is in the ignition.
3-62

Lock Feedback
Press the customization button until LOCK FEEDBACK
appears in the display. To select your preference for
the feedback you receive when locking the vehicle with
the remote keyless entry transmitter, press the select
button while LOCK FEEDBACK is displayed on the DIC.
Pressing the select button will scroll through the
following choices:
LOCK FEEDBACK: BOTH (default):The parking
lamps will ash each time you press the button with the
lock symbol on the remote keyless entry transmitter
and the horn will chirp the second time you press the
lock button.
LOCK FEEDBACK: LAMPS:The parking lamps will
ash each time you press the button with the lock
symbol on the remote keyless entry transmitter.
LOCK FEEDBACK: HORN:The horn will chirp the
second time you press the button with the lock symbol
on the remote keyless entry transmitter.
LOCK FEEDBACK: OFF:There will be no feedback
when locking the vehicle.
Choose one of the available options and press the
customization button while it is displayed on the DIC
to select it and move on to the next feature.
Unlock Feedback
Press the customization button until UNLOCK
FEEDBACK appears in the display. To select your
preference for the feedback you will receive when
unlocking the vehicle with the remote keyless entry
transmitter, press the select button while UNLOCK
FEEDBACK is displayed on the DIC. Pressing the select
button will scroll through the following choices:
UNLOCK FEEDBACK: LAMPS (default):The parking
lamps will ash each time you press the button with the
unlock symbol on the remote keyless entry transmitter.
UNLOCK FEEDBACK: HORN:The horn will chirp the
second time you press the button with the unlock
symbol on the remote keyless entry transmitter.
UNLOCK FEEDBACK: BOTH:The parking lamps will
ash each time you press the button with the unlock
symbol on the remote keyless entry transmitter and the
horn will chirp the second time you press the unlock
button.
UNLOCK FEEDBACK: OFF:There will be no feedback
when unlocking the vehicle.
Choose one of the available options and press the
customization button while it is displayed on the DIC
to select it and move on to the next feature.
3-63

Headlamp Delay
Press the customization button until HEADLAMP
DELAY appears in the display. To select your
preference for how long the headlamps will stay on
when you turn off the vehicle, press the select button
while HEADLAMP DELAY is displayed on the DIC.
Pressing the select button will scroll through the
following choices:
HEADLAMP DELAY: 10 SEC (default)
HEADLAMP DELAY: 20 SEC
HEADLAMP DELAY: 40 SEC
HEADLAMP DELAY: 1 MIN
HEADLAMP DELAY: 2 MIN
HEADLAMP DELAY: 3 MIN
HEADLAMP DELAY: OFF
The amount of time you choose will be the amount of
time that the headlamps stay on after you turn off
the vehicle. If you choose off, the headlamps will turn
off as soon as you turn off the vehicle.
Choose one of the available options and press the
customization button while it is displayed on the DIC to
select it and move on to the next feature.
Perimeter Lights
Press the customization button until PERIMETER
LIGHTS appears in the display. To select your preference
for perimeter lighting, press the select button while
PERIMETER LIGHTS is displayed on the DIC. Pressing
the select button will scroll through the following choices:
PERIMETER LIGHTS: ON (default):The headlamps
and back-up lamps will come on for 40 seconds, if
it is dark enough outside, when you unlock the vehicle
with the remote keyless entry transmitter.
PERIMETER LIGHTS: OFF:The perimeter lights will
not come on when you unlock the vehicle with the
remote keyless entry transmitter.
Choose one of the available options and press the
customization button while it is displayed on the DIC to
select it and move on to the next feature.
3-64

Highway Hypnosis...........................................4-36
Hill and Mountain Roads..................................4-36
HomeLink
®Transmitter....................................2-39
HomeLink®Transmitter, Programming................2-39
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-32
I
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-50
Ination -- Tire Pressure..................................5-62
Instrument Panel
Brightness..................................................3-17
Cluster.......................................................3-29
Overview..................................................... 3-4
Storage Area..............................................2-43
J
Jump Starting.................................................5-42
K
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Labelling, Tire Sidewall....................................5-57
Lamps
Battery Run-Down Protection.........................3-19
Dome........................................................3-18
Fog ...........................................................3-17
Puddle.......................................................3-16
Reading.....................................................3-18
LATCH System
Child Restraints...........................................1-61
Securing a Child Restraint Designed for
the LATCH System...................................1-63
Liftgate/Liftglass..............................................2-14
Liftglass/Liftgate..............................................2-14
Light
Airbag Readiness........................................3-31
Anti-Lock Brake System Warning...................3-36
Brake System Warning.................................3-34
Charging System.........................................3-33
Cruise Control.............................................3-44
7

Power (cont.)
Lumbar Controls........................................... 1-4
Retained Accessory (RAP)............................2-20
Seat............................................................ 1-3
Steering Fluid.............................................5-35
Windows....................................................2-16
Programmable Automatic Door Locks.................2-10
Programming the HomeLink
®Transmitter...........2-39
Puddle Lamps................................................3-16
Q
Questions and Answers About Safety Belts.........1-31
R
Radios..........................................................3-67
Care of Your Cassette Tape Player...............3-100
Care of Your CD and DVD Player................3-102
Care of Your CD Player..............................3-101
Care of Your CDs and DVDs.......................3-101
CD Changer...............................................3-96
Navigation/Radio System..............................3-94
Radio with Cassette and CD.........................3-68
Rear Seat Audio..........................................3-94
Setting the Time..........................................3-68Radios (cont.)
Theft-Deterrent............................................3-99
Understanding Reception............................3-100
Reading Lamps..............................................3-18
Rear Axle......................................................5-48
Rear Climate Control System............................3-26
Rear Door Security Locks................................2-12
Rear Heated Seats........................................... 1-9
Rear Safety Belt Comfort Guides......................1-44
Rear Seat Audio (RSA)....................................3-94
Rear Seat Entertainment System.......................3-83
Rear Seat Operation......................................... 1-8
Rear Seat Passengers, Safety Belts..................1-41
Rear Storage Area..........................................2-45
Rearview Mirror, Automatic Dimming
with OnStar
®, Compass and Temperature
Display......................................................2-32
Reclining Seatbacks.......................................... 1-6
Recommended Fluids and Lubricants.................6-12
Recovery Hooks.............................................4-43
Recreational Vehicle Towing.............................4-50
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Removing the Flat Tire and Installing
the Spare Tire.............................................5-80
Removing the Spare Tire and Tools...................5-76
Replacement Bulbs.........................................5-54
10