2005 GMC YUKON lock

{CAUTION:
Shifting a four-wheel-drive vehicle’s transfer
case into NEUTRAL can cause your vehicle to
roll even if the transmission is in PARK (P).
You or others could be injured. Make sure the
parking brake is rmly set before you shift the
transfer case to NEUTRAL.
6. Shift the transfer case to NEUTRAL. See
Four-Wheel Drive on page 2-27for the proper
procedure to select the NEUTRAL position for your
vehicle.
7. Release the parking brake only after the vehicle
being towed is rmly attached to the towing vehicle.
8. Turn the ignition off and lock the steering column.
Level Control
Automatic Level Control
The automatic level control rear suspension is available
on C/K 1500 vehicles and comes as a part of the
Autoride
®suspension, if equipped.
This type of level control is fully automatic and will
provide a better leveled riding position as well as better
handling under a variety of passenger and loading
conditions. An air compressor connected to the rear
shocks will raise or lower the rear of the vehicle
to maintain proper vehicle height. The system is
activated when the ignition key is turned to RUN and
will automatically adjust vehicle height thereafter.
The system may exhaust (lower vehicle height) for up to
ten minutes after the ignition key has been turned off.
You may hear the air compressor operating when
the height is being adjusted.
If a self-equalizing hitch is being used, it is
recommended to allow the shocks to inate, thereby
leveling the vehicle prior to adjusting the hitch.
4-65

Connect the adapter with the tab pointing up (see arrow).
The ip cap on the vehicle’s seven-wire harness will lock
onto the tab and help hold the adapter in place. Plug the
four-way round pin connector onto the adapter.
Power Winches
If you wish to use a power winch on your vehicle, only
use it when your vehicle is stationary or anchored.
Step-Bumper Pad
Your vehicle has a rear step bumper with a rear step
pad at the center of the bumper.
If you will be using the
bumper to tow a trailer,
and your step-bumper has
three cutout circles you
must push out the center
cutout circle to install
the trailer ball.
If your step-bumper has only one cutout circle, you will
have to cut out the circle, then remove it to install
the trailer ball.
4-82

Tires..............................................................5-57
Tire Sidewall Labelling...................................5-58
Tire Terminology and Denitions.....................5-62
Ination - Tire Pressure.................................5-64
Tire Pressure Monitor System.........................5-65
Tire Inspection and Rotation...........................5-68
When It Is Time for New Tires.......................5-70
Buying New Tires.........................................5-70
Uniform Tire Quality Grading..........................5-72
Wheel Alignment and Tire Balance..................5-73
Wheel Replacement......................................5-73
Tire Chains..................................................5-75
If a Tire Goes Flat........................................5-76
Changing a Flat Tire.....................................5-76
Removing the Spare Tire and Tools................5-78
Removing the Flat Tire and Installing the
Spare Tire................................................5-81
Secondary Latch System...............................5-87
Storing a Flat or Spare Tire and Tools............5-91
Spare Tire...................................................5-95
Appearance Care............................................5-95
Cleaning the Inside of Your Vehicle.................5-96
Fabric/Carpet...............................................5-97
Leather.......................................................5-98
Instrument Panel, Vinyl, and Other Plastic
Surfaces..................................................5-98Care of Safety Belts......................................5-99
Weatherstrips...............................................5-99
Washing Your Vehicle...................................5-99
Cleaning Exterior Lamps/Lenses.....................5-99
Finish Care................................................5-100
Windshield, Backglass, and Wiper Blades.......5-100
Aluminum or Chrome-Plated Wheels..............5-101
Tires.........................................................5-102
Sheet Metal Damage...................................5-102
Finish Damage...........................................5-102
Underbody Maintenance...............................5-102
Chemical Paint Spotting...............................5-102
Vehicle Care/Appearance Materials................5-103
Vehicle Identication.....................................5-104
Vehicle Identication Number (VIN)................5-104
Service Parts Identication Label...................5-104
Electrical System..........................................5-105
Add-On Electrical Equipment.........................5-105
Windshield Wiper Fuses...............................5-105
Power Windows and Other Power Options......5-105
Fuses and Circuit Breakers..........................5-105
Instrument Panel Fuse Block........................5-106
Center Instrument Panel Fuse Block..............5-108
Underhood Fuse Block................................5-109
Capacities and Specications........................5-114
Section 5 Service and Appearance Care
5-2

Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
Filling the Tank
{CAUTION:
Fuel vapor burns violently and a fuel re can
cause bad injuries. To help avoid injuries to
you and others, read and follow all the
instructions on the pump island. Turn off your
engine when you are refueling. Do not smoke
if you are near fuel or refueling your vehicle.
Keep sparks, ames, and smoking materials
away from fuel. Do not leave the fuel pump
unattended when refueling your vehicle — this
is against the law in some places. Keep
children away from the fuel pump; never let
children pump fuel.
The tethered fuel cap is located behind a hinged fuel
door on the driver’s side of the vehicle.
To remove the fuel cap, turn it slowly counterclockwise.
It will require more effort to turn the fuel cap on the
last turn as you loosen it.
5-8

{CAUTION:
If you spill fuel and then something ignites it,
you could be badly burned. Fuel can spray out
on you if you open the fuel cap too quickly.
This spray can happen if your tank is nearly
full, and is more likely in hot weather. Open
the fuel cap slowly and wait for any hiss noise
to stop. Then unscrew the cap all the way.
Be careful not to spill fuel. Do not top off or overll the
tank and wait a few seconds after you have nished
pumping before removing the nozzle. Clean fuel
from painted surfaces as soon as possible. See
Washing Your Vehicle on page 5-99.
When replacing the fuel cap, turn it clockwise until it
clicks. It will require more effort to turn the fuel cap on
the last turn as you tighten it. Make sure the cap is
fully installed. The diagnostic system can determine if
the fuel cap has been left off or improperly installed. This
would allow fuel to evaporate into the atmosphere.
SeeMalfunction Indicator Lamp on page 3-48.The TIGHTEN FUEL CAP message will be displayed on
the Driver Information Center (DIC) if the fuel cap is
not properly installed. SeeDIC Warnings and Messages
on page 3-58for more information.
{CAUTION:
If a re starts while you are refueling, do not
remove the nozzle. Shut off the ow of fuel by
shutting off the pump or by notifying the
station attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to get
the right type. Your dealer can get one for you.
If you get the wrong type, it may not t properly.
This may cause your malfunction indicator lamp to
light and may damage your fuel tank and emissions
system. SeeMalfunction Indicator Lamp on
page 3-48.
5-9

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-19.
B. Coolant Surge Tank and Pressure Cap. SeeCooling
System on page 5-29andCoolant Surge Tank
Pressure Cap on page 5-26.
C. Air Filter Restriction Indicator (If Equipped). See
Engine Air Cleaner/Filter on page 5-19.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-15.
E. Automatic Transmission Dipstick. See “Checking the
Fluid Level” underAutomatic Transmission Fluid
on page 5-21.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-15.
G. Engine Cooling Fan. SeeCooling System on
page 5-29.H. Remote Negative (−) Terminal (GND). SeeJump
Starting on page 5-41.
I. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-35.
J. Remote Positive (+) Terminal. SeeJump Starting on
page 5-41.
K. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-37.
L. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-109.
M. Battery. SeeBattery on page 5-40.
N. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-36.
5-13

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-19.
B. Coolant Surge Tank and Pressure Cap. SeeCooling
System on page 5-29andCoolant Surge Tank
Pressure Cap on page 5-26.
C. Air Filter Restriction Indicator (If Equipped). See
Engine Air Cleaner/Filter on page 5-19.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-15.
E. Automatic Transmission Dipstick. See “Checking the
Fluid Level” underAutomatic Transmission Fluid
on page 5-21.
F. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-15.
G. Engine Cooling Fan. SeeCooling System on
page 5-29.
H. Remote Negative (−) Terminal (GND). SeeJump
Starting on page 5-41.
I. Remote Positive (+) Terminal. SeeJump Starting on
page 5-41.
J. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-35.
K. Brake Master Fluid Reservoir. See “Brake Fluid”
underBrakes on page 5-37.
L. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-109.M. Battery. SeeBattery on page 5-40.
N. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-36.
Engine Oil
If the CHECK OIL LEVEL message appears on the
instrument cluster, it means you need to check
your engine oil level right away.
For more information, see CHECK OIL LEVEL under
DIC Warnings and Messages on page 3-58.
You should check your engine oil level regularly; this is
an added reminder.
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-12for
the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If you do not do this,
the oil dipstick might not show the actual level.
5-15

To reset the CHANGE ENGINE OIL message, see
“Engine Oil Life System” underDIC Operation and
Displays on page 3-55for vehicles equipped with the
DIC, or do the following:
1. Turn the ignition key to RUN with the engine off.
2. Fully press and release the accelerator pedal slowly
three times within ve seconds.
If the OIL LIFE RESET message ashes for
10 seconds, the system is resetting.
3. Turn the key to LOCK.
If the CHANGE ENGINE OIL message comes back on
when you start your vehicle, the engine oil life system
has not reset. Repeat the procedure. If it still does
not reset, see your dealer for service.
What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose of clothing or
rags containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from the
lter before disposal. Never dispose of oil by putting it in
the trash, pouring it on the ground, into sewers, or intostreams or bodies of water. Instead, recycle it by taking it
to a place that collects used oil. If you have a problem
properly disposing of your used oil, ask your dealer, a
service station or a local recycling center for help.
Engine Air Cleaner/Filter
SeeEngine Compartment
Overview on page 5-12
for the location of the
engine air cleaner/lter and
the air lter restriction
indicator, if equipped.
When to Inspect
If your vehicle is equipped with an air lter restriction
indicator, it lets you know when the engine air cleaner/
lter needs to be replaced. On vehicles with a restriction
indicator, you should inspect the air lter restriction
indicator at every oil change and replace the engine air
cleaner/lter when the indicator tells you to.
5-19