2012 GMC YUKON park assist

Black plate (21,1)GMC Yukon/Yukon XL Owner Manual - 2012
Vehicle Care 10-21
4. With the coolant surge tankpressure cap off, start the
engine and let it run until the
upper radiator hose can be felt
getting hot. Watch out for the
engine cooling fan.
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge tank
until the level reaches the FULL
COLD mark. 5. Replace the pressure cap. Be
sure the pressure cap is
hand-tight and fully seated.
6. Verify coolant level after engine is shut off and the coolant is
cold. If necessary, repeat coolant
fill procedure Steps 1 through 6.
Notice: If the pressure cap is not
tightly installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is a coolant temperature
gauge on your vehicle's instrument
panel. See Engine Coolant
Temperature Gauge on page 5‑16. In addition, ENGINE OVERHEATED
STOP ENGINE, ENGINE
OVERHEATED IDLE ENGINE, and
an ENGINE POWER IS REDUCED
message comes on in the Driver
Information Center (DIC) on the
instrument panel. See
Engine
Cooling System Messages on
page 5‑39 andEngine Power
Messages on page 5‑41.
If the decision is made not to lift the
hood when this warning appears,
but instead get service help right
away. See Roadside Assistance
Program on page 13‑5.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.

Black plate (47,1)GMC Yukon/Yukon XL Owner Manual - 2012
Vehicle Care 10-47
FusesUsage
17 Interior Lamps
18 Power Door Lock 1
(Unlock Feature)
19 Rear Seat
Entertainment
20 Ultrasonic Rear
Parking Assist, Power
Liftgate
21 Power Door Lock 1
(Lock Feature)
22 Driver Information
Center (DIC)
23 Rear Wiper
24 Cooled Seats
25 Driver Seat Module,
Remote Keyless Entry
System
26 Driver Power Door
Lock (Unlock Feature) Circuit
Breaker Usage
LT DR Driver Side Power
Window Circuit
Breaker
Harness
Connector Usage
LT DR Driver Door
Harness
Connection
BODY Harness Connector
BODY Harness Connector
Center Instrument Panel Fuse
Block
The center instrument panel fuse
block is located underneath the
instrument panel, to the left of the
steering column.
Top View
Harness
Connector Usage
BODY 2 Body Harness
Connector 2
BODY 1 Body Harness
Connector 1
BODY 3 Body Harness
Connector 3

Black plate (72,1)GMC Yukon/Yukon XL Owner Manual - 2012
10-72 Vehicle Care
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road,
if possible. Turn on the hazard
warning flashers. SeeHazard
Warning Flashers on page 6‑5.
{WARNING
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:
1. Set the parking brake firmly.
2. Put the shift lever in P (Park).
(Continued)
WARNING (Continued)
3. For vehicles withfour-wheel-drive with a
N (Neutral) transfer case
position, be sure the
transfer case is in a drive
gear —not in N (Neutral).
4. Turn off the engine and do not restart while the vehicle
is raised.
5. Do not allow passengers to remain in the vehicle.
6. Place wheel blocks on both sides of the tire at the
opposite corner of the tire
being changed.
When the vehicle has a flat tire (B),
use the following example as a
guide to assist in the placement of
the wheel blocks (A).
A. Wheel Block
B. Flat Tire
The following information explains
how to use the jack and change
a tire.
Tire Changing
Removing the Spare Tire
and Tools
The equipment needed to change a
flat tire is stored under the storage
tray, located on the driver side trim
panel, over the rear wheelhouse.

Black plate (7,1)GMC Yukon/Yukon XL Owner Manual - 2012
OnStar 14-7
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some of
the OnStar services, like Remote
Door Unlock and Stolen Vehicle
Assistance. You will be prompted to
change the PIN the first time when
speaking with an Advisor. To
change the OnStar PIN, call OnStar
and provide the Advisor with the
current number.
Warranty
OnStar equipment may be
warranted as part of the new-vehicle
limited warranty. The manufacturer
of the vehicle furnishes detailed
warranty information.
Languages
The vehicle can be programmed to
respond in French or Spanish.
Push
Qand ask an Advisor.
Advisors can speak French or
Spanish.
Potential Issues
Some OnStar services are disabled
after five days. OnStar cannot
perform Remote Door Unlock or
Stolen Vehicle Assistance after the
vehicle has been off continuously
for five days. After five days, OnStar
can contact Roadside Assistance
and a locksmith to help gain access
to the vehicle.
Global Positioning
System (GPS)
.Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels,
underpasses, or parking
garages; or in an area with very
dense trees. If GPS signals are
not available, the OnStar system
should still operate to call
OnStar. However, OnStar could
have difficulty identifying the
exact location.
.In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders.

Black plate (2,1)GMC Yukon/Yukon XL Owner Manual - 2012
i-2 INDEX
AutomaticDimming Mirrors . . . . . . . . . . . . . . 2-19
Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Headlamp System . . . . . . . . . . . . . 6-4
Level Control . . . . . . . . . . . . . . . . . 9-50
Automatic Transmission . . . . . . . 9-31 Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-12
Manual Mode . . . . . . . . . . . . . . . . . 9-35
Shift Lock Control
Function Check . . . . . . . . . . . 10-32
Auxiliary
Roof Mounted Lamp . . . . . . . . . . . 6-7
Auxiliary Devices . . . . . . . . . . . . . . 7-30
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-30
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-31
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-28 Jump Starting . . . . . . . . . . . . . . . 10-88
Load Management . . . . . . . . . . . . . 6-9
Power Protection . . . . . . . . . . . . . 6-10
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-38
Blade Replacement, Wiper . . . 10-33
Bluetooth . . . . . . . . . . . . . . . . . . . . . . 7-47 Brake
Pedal and Adjustable
Throttle . . . . . . . . . . . . . . . . . . . . . . 9-22
Brake System Warning Light . . . 5-23
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-26 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-44
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-45
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-45
System Messages . . . . . . . . . . . . 5-38
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Break-In, New Vehicle . . . . . . . . . 9-21
Bulb Replacement . . . . . . . . . . . . 10-39
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-6
Halogen Bulbs . . . . . . . . . . . . . . 10-37
Headlamp Aiming . . . . . . . . . . . 10-35
Headlamps . . . . . . . . . . . . . . . . . 10-37
License Plate Lamps . . . . . . . 10-38
Taillamps, Turn Signal,Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-37
Buying New Tires . . . . . . . . . . . . . 10-64
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-6
California Fuel Requirements . . . . . . . . . . . 9-62
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-3
Camera, Rear Vision . . . . . . . . . . 9-57
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-30
Liftgate . . . . . . . . . . . . . . . . . . 2-9, 2-10
Winter Driving . . . . . . . . . . . . . . . . 9-13
Cargo
Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Cautions, Danger, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD Player . . . . . . . . . . . . . . . . . . . . . 7-14
CD/DVD Player . . . . . . . . . . . . . . . . 7-19
Center Console Storage . . . . . . . . 4-2
Center Seat . . . . . . . . . . . . . . . . . . . . 3-4

Black plate (9,1)GMC Yukon/Yukon XL Owner Manual - 2012
INDEX i-9
OnStar®
Additional Information . . . . . . . . 14-5
Connections . . . . . . . . . . . . . . . . . . 14-4
Diagnostics . . . . . . . . . . . . . . . . . . . 14-5
Emergency . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . . 14-2
Overview . . . . . . . . . . . . . . . . . . . . . 14-1
Security . . . . . . . . . . . . . . . . . . . . . . 14-2
OnStar
®System . . . . . . . . . . . . . . . 1-27
Operation, Infotainment System . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Ordering Service Publications . . . . . . . . 13-12
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . . . 10-23
Overheating, Engine . . . . . . . . . . 10-21
Overview, OnStar
®. . . . . . . . . . . . 14-1
P
Park Shifting into . . . . . . . . . . . . . . . . . . . 9-27
Shifting out of . . . . . . . . . . . . . . . . . 9-28
Park Tilt Mirrors . . . . . . . . . . . . . . . . 2-19
Parking Assist, Ultrasonic . . . . . . . . . . . . . 9-53
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 9-45
Brake and P (Park)
Mechanism Check . . . . . . . . 10-33
Over Things That Burn . . . . . . . 9-29
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 5-19
Passenger Sensing System . . . 3-38
Perchlorate Materials Requirements, California . . . . . 10-3
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-47
Phone Bluetooth . . . . . . . . . . . . . . . . . . . . . 7-47 Power
Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Protection, Battery . . . . . . . . . . . . 6-10
Retained Accessory (RAP) . . . 9-27
Seat Adjustment . . . . . . . . . . . . . . . 3-4
Steering Fluid . . . . . . . . . . . . . . . 10-24
Windows . . . . . . . . . . . . . . . . . . . . . 2-21
Power Assist Steps . . . . . . . . . . . . 2-13
Pregnancy, Using Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Privacy Radio FrequencyIdentification (RFID) . . . . . . . 13-16
Program
Courtesy Transportation . . . . . . 13-8
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . 10-3

Black plate (13,1)GMC Yukon/Yukon XL Owner Manual - 2012
INDEX i-13
Tires (cont'd)Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . 10-68
Wheel Replacement . . . . . . . . 10-68
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . 10-63
Tow/Haul Mode . . . . . . . . . . . . . . . . 9-36
Tow/Haul Mode Light . . . . . . . . . . 5-25
Towing Driving Characteristics . . . . . . . . 9-68
Equipment . . . . . . . . . . . . . . . . . . . . 9-76
General Information . . . . . . . . . . 9-67
Recreational Vehicle . . . . . . . . 10-93
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 9-72
Trailer Sway Control (TSC) . . . 9-86
Vehicle . . . . . . . . . . . . . . . . . . . . . 10-93
Traction Control System (TCS)/
StabiliTrak
®Light . . . . . . . . . . . . 5-26 Trailer
Sway Control (TSC) . . . . . . . . . . 9-86
Tow Mirrors . . . . . . . . . . . . . . . . . . . 2-17
Trailer Towing . . . . . . . . . . . . . . . . . 9-72
Transfer Case . . . . . . . . . . . 9-37, 9-42
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 9-31
Fluid, Automatic . . . . . . . . . . . . 10-12
Messages . . . . . . . . . . . . . . . . . . . . 5-45
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . 13-8
Trip Odometer . . . . . . . . . . . . . . . . . 5-13
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Turn Signal Bulb Replacement . . . . . . . . . . 10-37
U
Ultrasonic Parking Assist . . . . . . 9-53
Uniform Tire Quality
Grading . . . . . . . . . . . . . . . . . . . . . 10-66
Universal Remote System . . . . . 5-55 Operation . . . . . . . . . . . . . . . . . . . . . 5-60
Programming . . . . . . . . . . . . . . . . . 5-55
Using This Manual . . . . . . . . . . . . . . . . iv
V
Vehicle Canadian Owners . . . . . . . . . . . . . . . iii
Control . . . . . . . . . . . . . . . . . . . . . . . . 9-3
IdentificationNumber (VIN) . . . . . . . . . . . . . . . 12-1
Load Limits . . . . . . . . . . . . . . . . . . . 9-16
Messages . . . . . . . . . . . . . . . . . . . . 5-37
Personalization . . . . . . . . . . . . . . . 5-47
Reminder Messages . . . . . . . . . . 5-46