2012 GMC YUKON Owner's Manual

Black plate (9,1)GMC Yukon/Yukon XL Owner Manual - 2012
Instruments and Controls 5-9
Power Outlets
The accessory power outlets can be
used to plug in electrical equipment,
such as a cell phone or MP3 player.
There are two under the climate
controls, one inside the center floor
console, one on the rear of the
center floor console and one
accessory power outlet in the rear
cargo area on the passenger side.
Remove the cover to access and
replace when not in use.
The accessory power outlets are
powered, even with the ignition off.
Continuing to use accessory power
outlets while the ignition is in LOCK/
OFF may cause the vehicle's
battery to run down.{WARNING
Power is always supplied to the
outlets. Do not leave electrical
equipment plugged in when the
vehicle is not in use because the
vehicle could catch fire and cause
injury or death.
Notice: Leaving electrical
equipment plugged in for an
extended period of time while
the vehicle is off will drain the
battery. Always unplug electrical
equipment when not in use and
do not plug in equipment that
exceeds the maximum 20 ampere
rating. Certain accessory plugs may not be
compatible with the accessory
power outlet and could overload
adapter or vehicle fuses. If a
problem is experienced, see your
dealer.
When adding electrical equipment,
be sure to follow the proper
installation instructions included
with the equipment. Do not use
equipment exceeding the
maximum amperage rating of
20 amperes. See
Add-On Electrical
Equipment on page 9‑86.
Notice: Hanging heavy
equipment from the power outlet
can cause damage not covered
by the vehicle warranty. The
power outlets are designed for
accessory power plugs only, such
as cell phone charge cords.

Black plate (10,1)GMC Yukon/Yukon XL Owner Manual - 2012
5-10 Instruments and Controls
Power Outlet 110 Volt
Alternative Current
The vehicle may have a power
outlet that can be used to plug in
electrical equipment that uses a
maximum limit of 150 watts.
The power outlet is located on the
rear of the center console.An indicator light on the outlet turns
on to show it is in use. The light
comes on when the ignition is in
ON/RUN and equipment requiring
less than 150 watts is plugged into
the outlet, and no system fault is
detected.
If equipment is connected using
more than 150 watts or a system
fault is detected, a protection circuit
shuts off the power supply and the
indicator light turns off. To reset the
circuit, unplug the item and plug it
back in or turn the Remote
Accessory Power (RAP) off and
then back on. See
Retained
Accessory Power (RAP) on
page 9‑27 The power outlet is not designed for
and may not work properly, if the
following are plugged in:
.Equipment with high initial
peak wattage such as:
compressor-driven refrigerators
and electric power tools.
.Other equipment requiring
an extremely stable power
supply such as:
microcomputer-controlled
electric blankets, touch sensor
lamps, etc.

Black plate (11,1)GMC Yukon/Yukon XL Owner Manual - 2012
Instruments and Controls 5-11
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.Warning lights come on when there
could be a problem with a vehicle
function. Some warning lights come
on briefly when the engine is started
to indicate they are working.
Gauges can indicate when there
could be a problem with a vehicle
function. Often gauges and warning
lights work together to indicate a
problem with the vehicle.
When one of the warning lights
comes on and stays on while
driving, or when one of the gauges
shows there may be a problem,
check the section that explains what
to do. Follow this manual's advice.
Waiting to do repairs can be costly
and even dangerous.

Black plate (12,1)GMC Yukon/Yukon XL Owner Manual - 2012
5-12 Instruments and Controls
Instrument Cluster
English 6‐Speed Shown, Metric and 2500 Series Similar

Black plate (13,1)GMC Yukon/Yukon XL Owner Manual - 2012
Instruments and Controls 5-13
If the vehicle is a hybrid, see the
hybrid supplement for more
information.
Speedometer
The speedometer shows the
vehicle's speed in either kilometers
per hour (km/h) or miles per
hour (mph).
Odometer
The odometer shows how far the
vehicle has been driven, in either
kilometers or miles.
Trip Odometer
The trip odometer can show how far
the vehicle has been driven since
the trip odometer was last set
to zero.
Press the reset button, located on
the instrument panel cluster next to
the trip odometer display, to toggle
between the trip odometer and the
regular odometer. Holding the reset
button for approximately one second
while the trip odometer is displayed
resets it.
To display the odometer reading
with the ignition off, press the reset
button.
Tachometer
The tachometer displays the
engine speed in revolutions per
minute (rpm).
If the vehicle is a hybrid, see the
hybrid supplement for more
information.

Black plate (14,1)GMC Yukon/Yukon XL Owner Manual - 2012
5-14 Instruments and Controls
Fuel Gauge
Metric
English
The fuel gauge, when the ignition is
on, shows how much fuel the
vehicle has left in the tank.
An arrow on the fuel gauge
indicates the side of the vehicle the
fuel door is on.
The gauge first indicates empty
before the vehicle is out of fuel, and
the vehicle's fuel tank should be
filled soon. When the fuel tank is low, the FUEL
LEVEL LOW message appears in
the Driver Information Center (DIC).
See
Fuel System Messages on
page 5‑41 for more information.
Here are some situations owners
may experience with the fuel gauge.
None of these indicate a problem
with the fuel gauge.
.At the gas station, the fuel pump
shuts off before the gauge
reads full.
.It takes a little more or less fuel
to fill up than the fuel gauge
indicated. For example, the
gauge may have indicated the
tank was half full, but it actually
took a little more or less than
half the tank's capacity to fill
the tank.
.The gauge goes back to empty
when the ignition is turned off.
If the vehicle is a hybrid, see the
hybrid supplement for more
information.

Black plate (15,1)GMC Yukon/Yukon XL Owner Manual - 2012
Instruments and Controls 5-15
Engine Oil Pressure
Gauge
Metric
English
The oil pressure gauge shows the
engine oil pressure in psi (pounds
per square inch) when the engine is
running. Canadian vehicles indicate
pressure in kPa (kilopascals). Oil pressure may vary with engine
speed, outside temperature and oil
viscosity, but readings above the
low pressure zone indicate the
normal operating range. When the
oil pressure reaches the low
pressure zone, the OIL PRESSURE
LOW STOP ENGINE message
appears in the Driver Information
Center (DIC). See
Engine Oil
Messages on page 5‑40 andEngine
Oil on page 10‑8 for more
information.

Black plate (16,1)GMC Yukon/Yukon XL Owner Manual - 2012
5-16 Instruments and Controls
A reading in the low pressure zone
may be caused by a dangerously
low oil level or some other problem
causing low oil pressure. Check the
oil as soon as possible.
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule for changing engine oil.
If the vehicle is a hybrid, see the
hybrid supplement for more
information.
Engine Coolant
Temperature Gauge
Metric
English
This gauge shows the engine
coolant temperature.
It also provides an indicator of how
hard the vehicle is working. During a
majority of the operation, the gauge
reads 100°C (210°F) or less. If you
are pulling a load or going up hills, it
is normal for the temperature to
fluctuate and approach the 122°C
(250°F) mark. If the gauge reaches
the 125°C (260°F) mark, it indicates
that the cooling system is working
beyond its capacity.