2003 GMC YUKON air condition

50,000 Miles (83 000 km)
❑Change automatic transmissionfluid andfilter if the
vehicle’s GVWR is over 8600 lbs or if the vehicle is
mainly driven under one or more of these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
If you do not use your vehicle under any of these
conditions, change the fluid and filter at 100,000 miles
(166 000 km).
❑Change transfer case uid.
52,500 Miles (87 500 km)
❑Check rear/front axle uid level and add uid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
60,000 Miles (100 000 km)
❑Check rear/front axle uid level and add uid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
❑Replace fuel lter.An Emission Control Service.
(See footnote †.)
❑Replace engine air cleaner lter on vehicles without
a restriction indicator. If equipped with a change
indicator, inspect the indicator. If necessary, replace
the lter. If vehicle is driven in dusty/dirty conditions,
inspect the change indicator (if equipped) at every
engine oil change. SeeEngine Air Cleaner/Filter on
page 5-21for more information.An Emission
Control Service. (See footnote †.)
❑Inspect Evaporative Control System. Check all fuel
and vapor lines and hoses for proper hook-up,
routing and condition. Check that the purge valve
works properly, if equipped. Replace as needed.An
Emission Control Service. (See footnote †.)
6-8
2003 - Yukon/Yukon XL

67,500 Miles (112 500 km)
❑Check rear/front axleuid level and adduid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
75,000 Miles (125 000 km)
❑Inspect engine air cleanerlter or change indicator (if
equipped). If necessary, replace thelter. If vehicle is
driven in dusty/dirty conditions, inspectlter or
change indicator (if equipped) at every engine oil
change. SeeEngine Air Cleaner/Filter on page 5-21
for more information.An Emission Control Service.
(See footnote†.)
❑Check rear/front axleuid level and adduid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
82,500 Miles (137 500 km)
❑Check rear/front axleuid level and adduid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
90,000 Miles (150 000 km)
❑Check rear/front axleuid level and adduid as
needed. Check constant velocity joints and axle seals
for leaking.
❑Replace fuellter.An Emission Control Service.
(See footnote†.)
❑Replace engine air cleanerlter on vehicles without
a restriction indicator. If equipped with a change
indicator, inspect the indicator. If necessary, replace
thelter. If vehicle is driven in dusty/dirty conditions,
inspect the change indicator (if equipped) at every
engine oil change. SeeEngine Air Cleaner/Filter on
page 5-21for more information.An Emission
Control Service. (See footnote†.)
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-61for proper rotation pattern and additional
information.(See footnote +.)
6-9
2003 - Yukon/Yukon XL

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).You should let your dealer’s
service department do these jobs. Make sure any
necessary repairs are completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-10.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chang, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in theoor pan or could let
exhaust fumes into the vehicle. SeeEngine Exhaust
on page 2-38.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
6-15
2003 - Yukon/Yukon XL

Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection
Every 12 months or at engine oil change intervals,
check front axle and transfer case and add lubricant
when necessary. Auid loss could indicate a problem;
check and have it repaired, if needed. On manual
shift transfer case, oil the control lever pivot point. Check
vent hose at transfer case for kinks and proper
installation. More frequent lubrication may be required
on off-road use.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
chang, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-16
2003 - Yukon/Yukon XL

Additional Program Information
Courtesy Transportation is available during the
Bumper-to-Bumper warranty coverage period, but itis
notpart of the New Vehicle Limited Warranty. A
separate booklet entitledWarranty and Owner
Assistance Informationfurnished with each new vehicle
provides detailed warranty coverage information.
Courtesy Transportation is available only at participating
dealers and all program options, such as shuttle
service, may not be available at every dealer. Please
contact your dealer for specic information about
availability. All Courtesy Transportation arrangements
will be administered by appropriate dealer personnel.
Canadian Vehicles:For warranty repairs during
the Complete Vehicle Coverage period of the General
Motors of Canada New Vehicle Limited Warranty,
alternative transportation may be available under the
Courtesy Transportation Program. Please consult
your dealer for details.
General Motors reserves the right to unilaterally modify,
change or discontinue Courtesy Transportation at
any time and to resolve all questions of claim eligibility
pursuant to the terms and conditions described
herein at its sole discretion.
Reporting Safety Defects
Reporting Safety Defects to the
United States Government
If you believe that your vehicle has a defect which could
cause a crash or could cause injury or death, you
should immediately inform the National Highway Traffic
Safety Administration (NHTSA), in addition to notifying
General Motors.
If NHTSA receives similar complaints, it may open an
investigation, and if itnds that a safety defect exists in
a group of vehicles, it may order a recall and remedy
campaign. However, NHTSA cannot become involved in
individual problems between you, your dealer or
General Motors.
To contact NHTSA, you may either call the Auto Safety
Hotline toll-free at 1-800-424-9393 (or 366-0123 in
the Washington, D.C. area) or write to:
NHTSA, U.S. Department of Transportation
Washington, D.C. 20590
You can also obtain other information about motor
vehicle safety from the hotline.
7-9
2003 - Yukon/Yukon XL

A
Accessory Power Outlets.................................3-20
Adding Washer Fluid.......................................5-39
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-5
Add-On Electrical Equipment............................5-97
Adjustable Throttle and Brake Pedal..................2-21
Adjusting the Speakers
(Balance/Fade)..................3-74, 3-78, 3-88, 3-101
After Off-Road Driving.....................................4-37
Air Bag
Passenger Status Indicator...........................3-40
Readiness Light..........................................3-40
Air Bag Systems.....................................1-70, 1-77
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-86
How Does an Air Bag Restrain?....................1-78
Passenger Sensing System...........................1-81
Servicing Your Air Bag-Equipped Vehicle.........1-85
What Makes an Air Bag Inflate?....................1-78
What Will You See After an Air Bag Inflates?......1-79
When Should an Air Bag Inflate?...................1-76
Where Are the Air Bags?..............................1-74
Air Cleaner/Filter, Engine.................................5-21
Air Conditioning
..............................................3-29
All Overseas Locations
...................................... 7-4
All-Wheel Drive
...............................................5-49
All-Wheel Drive with Stabilitrak
®........................2-31
AM
.............................................................3-123AM-FM Radio.................................................3-72
Antenna, Fixed Mast......................................3-125
Antenna, XM™ Satellite Radio Antenna System . . . 3-126
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-44
Appearance Care............................................5-88
Care of Safety Belts....................................5-91
Chemical Paint Spotting...............................5-94
Cleaning the Inside of Your Vehicle................5-89
Cleaning the Outside of Your Vehicle..............5-92
Finish Damage............................................5-94
GM Vehicle Care/Appearance Materials..........5-95
Sheet Metal Damage...................................5-94
Underbody Maintenance...............................5-94
Weatherstrips..............................................5-91
Approaching a Hill..........................................4-29
Ashtrays........................................................3-21
Audio Output................................................3-118
Audio System(s).............................................3-71
AM-FM Radio.............................................3-72
Audio Steering Wheel Controls....................3-122
Care of Your Cassette Tape Player...............3-124
Care of Your CD and DVD Player
................3-125
Care of Your CDs and DVDs
.......................3-125
Chime Level Adjustment
.............................3-126
Fixed Mast Antenna
...................................3-125
Radio with Cassette and CD
.........................3-85
Radio with CD
............................................3-75
Radio with Six-Disc CD
................................3-98
Rear Seat Audio (RSA)
...............................3-120
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2003 - Yukon/Yukon XL

Cleaning (cont.)
Underbody Maintenance...............................5-94
Video Screen............................................3-125
Weatherstrips..............................................5-91
Cleaning Aluminum or Chrome-Plated Wheels.....5-93
Cleaning Exterior Lamps/Lenses.......................5-92
Cleaning Fabric/Carpet....................................5-89
Cleaning Glass Surfaces..................................5-91
Cleaning Interior Plastic Components.................5-91
Cleaning Leather............................................5-90
Cleaning the Mirror.........................................2-43
Cleaning the Top of the Instrument Panel...........5-91
Cleaning the Windshield, Backglass and Wiper
Blades.......................................................5-93
Cleaning Tires................................................5-94
Cleaning Vinyl................................................5-90
Climate Control System...................................3-21
Dual ..........................................................3-22
Dual Automatic............................................3-26
Rear Air Conditioning and Heating System......3-33
Rear Air Conditioning and Heating System,
Electronic................................................3-35
Rear Air Conditioning System........................3-32
Compact Disc Messages................3-84, 3-97, 3-110
Compass Calibration...............................2-42, 2-44
Compass Operation.........................................2-44
Compass Variance..................................2-41, 2-44Content Theft-Deferrent....................................2-16
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-56
Coolant
Engine Temperature Gage............................3-46
Heater, Engine............................................2-21
Surge Tank Pressure Cap.............................5-29
Cooling System..............................................5-32
Cruise Control................................................3-11
Cruise Control Light........................................3-52
Cupholder(s)..................................................2-54
Current and Past Model Order Forms................7-11
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-10
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government.............................................. 7-9
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-10
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2003 - Yukon/Yukon XL

Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-11
Part C - Periodic Maintenance Inspections..........6-15
PartD-Recommended Fluids and Lubricants....6-17
PartE-Maintenance Record...........................6-19
Passenger Air Bag Indicator.....................2-43, 2-45
Passenger Air Bag Status Indicator...................3-40
PASSENGER DOOR AJAR..............................3-69
Passenger Sensing System..............................1-81
Passing.................................................4-20, 4-69
Passlock
®......................................................2-18
Personalization Button.....................................3-57
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape..................................3-93
Playing a Compact Disc.................3-83, 3-95, 3-106
Playing a Specific Loaded
Compact Disc............................................3-107
Playing the Radio...................3-72, 3-76, 3-86, 3-99
Power
Accessory Outlets........................................3-20
Door Locks.................................................. 2-8
Electrical System.........................................5-97
Lumbar Controls........................................... 1-5
Seat ............................................................ 1-4
Steering Fluid.............................................5-38
Windows
....................................................2-15
Power Steering
...............................................4-14
Power Winches
..............................................4-74
Programmable Automatic Door Locks
.................. 2-9
Programming the HomeLink Transmitter
.............2-51
Q
QUADRASTEER™..........................................4-16
Questions and Answers About Safety Belts.........1-27
R
Radio Data System (RDS)...............3-75, 3-85, 3-98
Radio Messages.............................3-74, 3-80, 3-90
Radios..........................................................3-71
AM-FM Radio.............................................3-72
Care of Your Cassette Tape Player...............3-124
Care of Your CD and DVD Player................3-125
Care of Your CDs and DVDs .......................3-125
Radio with Cassette and CD.........................3-85
Radio with CD............................................3-75
Radio with Six-Disc CD................................3-98
Rear Seat Audio........................................3-120
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-72
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-71
Theft-Deterrent..........................................3-122
Understanding Reception............................3-123
RDS Messages.............................3-79, 3-89, 3-103
REAR ACCESS OPEN ....................................3-67
Rear Air Conditioning and Heating System.........3-33
Rear Air Conditioning and Heating System and
Electronic Climate Controls...........................3-35
Rear Air Conditioning System...........................3-32
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2003 - Yukon/Yukon XL