2009 GMC YUKON towing

Engine Fan Noise
If the vehicle has a clutched engine cooling fan, when the
clutch is engaged, the fan spins faster to provide more air
to cool the engine. In most everyday driving conditions,
the fan is spinning slower and the clutch is not fully
engaged. This improves fuel economy and reduces fan
noise. Under heavy vehicle loading, trailer towing, and/or
high outside temperatures, the fan speed increases as
the clutch more fully engages, so you may hear an
increase in fan noise. This is normal and should not be
mistaken as the transmission slipping or making extra
shifts. It is merely the cooling system functioning properly.
The fan will slow down when additional cooling is not
required and the clutch disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch partially
disengages.
If the vehicle has electric cooling fans, you may hear the
fans spinning at low speed during most everyday driving.
The fans may turn off if no cooling is required. Under
heavy vehicle loading, trailer towing, and/or high outside
temperatures, or if you are operating the air conditioning
system, the fans may change to high speed and you
may hear an increase in fan noise. This is normal and
indicates that the cooling system is functioning properly.
The fans will change to low speed when additional
cooling is no longer required.
Power Steering Fluid
If the vehicle is a Two-mode Hybrid, see the Two-mode
Hybrid manual for more information.
SeeEngine Compartment
Overview on page 5-14for
reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering uid
unless you suspect there is a leak in the system or
you hear an unusual noise. A uid loss in this system
could indicate a problem. Have the system inspected
and repaired.
5-38

(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo door
hinge, locks, and folding seat hardware. More frequent
lubrication may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal better,
and not stick or squeak.
(g)Check vent hose at transfer case for kinks and proper
installation. Check to be sure vent hose is unobstructed,
clear, and free of debris. During any maintenance, if a
power washer is used to clean mud and dirt from the
underbody, care should be taken to not directly spray the
transfer case output seals. High pressure water can
overcome the seals and contaminate the transfer case
fluid. Contaminated fluid will decrease the life of the
transfer case and should be replaced.
(h)Change automatic transmission fluid and filter 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.(i)Drain, flush, and refill cooling system. This service can
be complex; you should have your dealer/retailer perform
this service. See Engine Coolant on page 5-29 for what to
use. Inspect hoses. Clean radiator, condenser, pressure
cap, and filler neck. Pressure test the cooling system and
pressure cap.
(j)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the fluid level checked. Add fluid if needed.
(k)Inspect 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.
(l)If driving regularly under dusty conditions, inspect the
filter at each engine oil change.
(m)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
(n)Severe Service: Change transfer case fluid if the
vehicle is mainly used for trailer towing or driven in city
traffic, wet environment, or high ambient temperatures.
6-9

Services Not Included in Roadside
Assistance
Impound towing caused by violation of any laws.
Legal nes.
Mounting, dismounting or changing of snow tires,
chains, or other traction devices.
Towing or services for vehicles driven on a
non-public road or highway.
Services Specic to Canadian
Purchased Vehicles
Fuel delivery:Reimbursement is approximately
$5 Canadian. Diesel fuel delivery may be
restricted. Propane and other fuels are not provided
through this service.
Lock-Out Service:Vehicle registration is required.
Trip Routing Service:Limit of six requests
per year.
Trip Interruption Benets and Assistance:Must
be over 250 kilometres from where your trip was
started to qualify. General Motors of Canada Limited
requires pre-authorization, original detailed
receipts, and a copy of the repair orders. Once
authorization has been received, the Roadside
Assistance advisor will help you make arrangements
and explain how to receive payment.
Alternative Service:If assistance cannot be
provided right away, the Roadside Assistance
advisor may give you permission to get local
emergency road service. You will receive payment,
up to $100, after sending the original receipt to
Roadside Assistance. Mechanical failures may be
covered, however any cost for parts and labor
for repairs not covered by the warranty are
the owner responsibility.
7-9

If a Crash Occurs
Here is what to do if you are involved in a crash.
Check to make sure that you are all right. If you
are uninjured, make sure that no one else in
your vehicle, or the other vehicle, is injured.
If there has been an injury, call emergency services
for help. Do not leave the scene of a crash until all
matters have been taken care of. Move your vehicle
only if its position puts you in danger or you are
instructed to move it by a police officer.
Give only the necessary and requested information
to police and other parties involved in the crash.
Do not discuss your personal condition, mental
frame of mind, or anything unrelated to the crash.
This will help guard against post-crash legal action.
If you need roadside assistance, call GM Roadside
Assistance. SeeRoadside Assistance Program on
page 7-7for more information.
If your vehicle cannot be driven, know where the
towing service will be taking it. Get a card from the
tow truck operator or write down the driver’s name,
the service’s name, and the phone number.
Remove any valuables from your vehicle before it is
towed away. Make sure this includes your insurance
information and registration if you keep these items
in your vehicle.
Gather the important information you will need from
the other driver. Things like name, address, phone
number, driver’s license number, vehicle license
plate, vehicle make, model and model year, Vehicle
Identication Number (VIN), insurance company and
policy number, and a general description of the
damage to the other vehicle.
If possible, call your insurance company from the
scene of the crash. They will walk you through the
information they will need. If they ask for a police
report, phone or go to the police department
headquarters the next day and you can get a copy of
the report for a nominal fee. In some states/provinces
with “no fault” insurance laws, a report may not be
necessary. This is especially true if there are no
injuries and both vehicles are driveable.
Choose a reputable collision repair facility for your
vehicle. Whether you select a dealer/retailer or a
private collision repair facility to x the damage,
make sure you are comfortable with them.
Remember, you will have to feel comfortable with
their work for a long time.
Once you have an estimate, read it carefully and
make sure you understand what work will be
performed on your vehicle. If you have a question,
ask for an explanation. Reputable shops welcome
this opportunity.
7-13

Lights
Exterior Lamps............................................3-14
Flash-to-Pass............................................... 3-8
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-16
Loading Your Vehicle.......................................4-33
Locking Rear Axle............................................ 4-9
Lockout Protection..........................................2-12
Locks
Delayed Locking..........................................2-10
Door ..........................................................2-10
Lockout Protection.......................................2-12
Power Door ................................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-11
Loss of Control...............................................4-11
Low Fuel Warning Light...................................3-51
Lower Anchors and Tethers for Children.............1-66
Luggage Carrier..............................................2-75
Lumbar
Manual Controls............................................ 1-6
Power Controls............................................. 1-6
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-10
At Least Once a Year..................................6-11Maintenance Schedule (cont.)
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-8
Maintenance Record....................................6-17
Maintenance Replacement Parts....................6-15
Maintenance Requirements............................. 6-2
Owner Checks and Services.........................6-10
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Lamp...............................3-44
Manual Lumbar Controls.................................... 1-6
Manual Seats................................................... 1-4
Memory Seat, Mirrors, and Pedals...................... 1-8
Message
DIC Warnings and Messages........................3-64
Mirrors
Automatic Dimming Rearview........................2-48
Manual Rearview Mirror................................2-48
Outside Automatic Dimming Mirror.................2-51
Outside Convex Mirror.................................2-52
Outside Heated Mirrors................................2-52
Outside Manual Mirrors................................2-49
Outside Power Foldaway Mirrors....................2-50
Outside Power Mirrors..................................2-50
Outside Towing Mirrors.................................2-49
Park Tilt.....................................................2-51
MP3 ..................................................3-102, 3-107
MyGMLink.com................................................ 7-5
8

N
Navigation System, Privacy..............................7-18
Navigation/Radio System, see Navigation
Manual.....................................................3-114
New Vehicle Break-In......................................2-24
O
Odometer......................................................3-36
Odometer, Trip...............................................3-36
Off-Road Driving.............................................4-12
Off-Road Recovery..........................................4-11
Oil
Engine.......................................................5-15
Pressure Gage............................................3-46
Pressure Light.............................................3-48
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-54
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-18
OnStar
®System, see OnStar®Manual...............2-64
Operation, Universal Home Remote System........2-68
Outlet Adjustment............................................3-31
Outlets
Accessory Power.........................................3-20
Outside
Automatic Dimming Mirror.............................2-51
Convex Mirror.............................................2-52
Heated Mirrors............................................2-52Outside (cont.)
Manual Mirrors............................................2-49
Power Foldaway Mirrors...............................2-50
Power Mirrors.............................................2-50
Towing Mirrors............................................2-49
Overheated Engine Protection
Operating Mode..........................................5-37
Owner Checks and Services.............................6-10
Owners, Canadian.............................................. iii
P
Paint, Damage..............................................5-114
Park
Shifting Into................................................2-44
Shifting Out of............................................2-45
Park Aid................................................2-53, 2-59
Park Brake....................................................2-42
Park Tilt Mirrors..............................................2-51
Parking
Assist........................................................2-53
Over Things That Burn.................................2-46
Passenger Airbag Status Indicator.....................3-38
Passenger Sensing System..............................1-90
Passing.........................................................4-11
PASS-Key
®III+ Electronic Immobilizer...............2-22
PASS-Key®III+ Electronic Immobilizer
Operation...................................................2-23
9

Perchlorate Materials Requirements,
California..................................................... 5-4
Phone
Bluetooth
®................................................3-114
Power
Door Locks.................................................2-10
Electrical System.......................................5-116
Liftgate......................................................2-14
Lumbar Controls........................................... 1-6
Retained Accessory.....................................2-26
Seat ............................................................ 1-5
Steering Fluid.............................................5-38
Windows....................................................2-19
Power Assist Steps.........................................2-17
Privacy..........................................................7-16
Event Data Recorders..................................7-17
Navigation System.......................................7-18
OnStar .......................................................7-18
Radio Frequency Identication.......................7-18
Programmable Automatic Door Locks.................2-11
R
Radio Frequency Identication (RFID), Privacy......7-18
Radio(s)........................................................3-86
Radios
Navigation/Radio System, see Navigation
Manual.................................................3-114
Rear Seat Audio........................................3-134Radios (cont.)
Reception.................................................3-137
Setting the Clock.........................................3-84
Theft-Deterrent..........................................3-136
Rainsense™ II Wipers....................................... 3-9
Reading Lamps..............................................3-19
Rear Air Conditioning and Heating System.........3-31
Rear Air Conditioning and Heating System
and Electronic Climate Controls.....................3-33
Rear Axle......................................................5-50
Locking........................................................ 4-9
Rear Door Security Locks................................2-11
Rear Heated Seats.........................................1-13
Rear Seat Armrest..........................................2-76
Rear Seat Audio (RSA)..................................3-134
Rear Seat Entertainment System.....................3-125
Rear Side Window Antenna............................3-138
Rear Storage Area..........................................2-76
Rear Vision Camera........................................2-59
Rear Windshield Washer/Wiper.........................3-11
Rearview Mirror, Automatic Dimming..................2-48
Rearview Mirrors.............................................2-48
Reclining Seatbacks........................................1-10
Recommended Fluids and Lubricants.................6-13
Recovery Hooks.............................................4-32
Recreational Vehicle Towing.............................4-44
Remote Keyless Entry (RKE) System.................. 2-4
Remote Keyless Entry (RKE) System,
Operation..................................................... 2-5
Remote Vehicle Start........................................ 2-7
10

Tire
Pressure Light.............................................3-43
Tires.............................................................5-62
Aluminum or Chrome-Plated Wheels,
Cleaning...............................................5-113
Buying New Tires........................................5-80
Chains.......................................................5-86
Changing a Flat Tire....................................5-88
Cleaning...................................................5-114
Different Size..............................................5-82
If a Tire Goes Flat.......................................5-87
Ination - Tire Pressure................................5-70
Inspection and Rotation................................5-78
Installing the Spare Tire................................5-94
Pressure Monitor Operation...........................5-74
Pressure Monitor System..............................5-72
Removing the Flat Tire.................................5-94
Removing the Spare Tire and Tools...............5-89
Secondary Latch System............................5-100
Spare Tire................................................5-107
Storing a Flat or Spare Tire and Tools..........5-103
Tire Sidewall Labeling..................................5-63
Tire Terminology and Denitions....................5-67
Uniform Tire Quality Grading.........................5-82
Wheel Alignment and Tire Balance.................5-84
Wheel Replacement.....................................5-84Tires (cont.)
When It Is Time for New Tires......................5-79
Tow/Haul Mode ...............................................2-35
Tow/Haul Mode Light.......................................3-49
Towing
Recreational Vehicle.....................................4-44
Towing a Trailer..........................................4-52
Your Vehicle...............................................4-44
Traction
StabiliTrak
®System....................................... 4-6
Trailer
Recommendations.......................................4-73
Transmission
Fluid, Automatic..................................5-21, 5-24
Transmission Operation, Automatic....................2-29
Trip Odometer................................................3-36
Turn and Lane-Change Signals.......................... 3-7
Turn Signal/Multifunction Lever........................... 3-7
U
Ultrasonic Rear Parking Assist (URPA)...............2-53
Uniform Tire Quality Grading............................5-82
Universal Home Remote System.......................2-68
Operation...................................................2-68
13