ECU GMC YUKON XL 2011 Service Manual

Black plate (56,1)GMC Yukon/Yukon XL Owner Manual - 2011
5-56 Instruments and Controls
This system provides a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Do not use this system with any
garage door opener that does not
have the stop and reverse feature.
This includes any garage door
opener model manufactured before
April 1, 1982.
Read the instructions completely
before attempting to program the
transmitter. Because of the steps
involved, it may be helpful to
have another person assist with
programming the transmitter.
Be sure to keep the original remote
control transmitter for use in other
vehicles, as well as for future
programming. Only the original
remote control transmitter is needed
for Fixed Code programming.The programmed buttons should
be erased when the vehicle is sold
or the lease ends. See
“Erasing
Universal Home Remote Buttons”
in this section.
Park the vehicle outside of the
garage when programming a garage
door. Be sure that people and
objects are clear of the garage door
or gate that is being programmed.
Programming Universal Home
Remote —Rolling Code
For questions or help programming
the Universal Home Remote
System, call 1-866-572-2728 or
go to www.learcar2u.com.
Most garage door openers sold
after 1996 are Rolling Code units. Programming a garage door opener
involves time-sensitive actions, so
read the entire procedure before
starting. Otherwise, the device will
time out and the procedure will have
to be repeated.To program up to three devices:
1. From inside the vehicle,
press the two outside buttons
at the same time for one to
two seconds, and immediately
release them.

Black plate (57,1)GMC Yukon/Yukon XL Owner Manual - 2011
Instruments and Controls 5-57
2. In the garage, locate thegarage door opener receiver
(motor-head unit). Find the
“Learn” or“Smart” button. It
can usually be found where
the hanging antenna wire is
attached to the motor-head unit
and may be a colored button.
Press this button. After pressing
this button, complete the
following steps in less than
30 seconds. 3. Immediately return to the
vehicle. Press and hold the
Universal Home Remote button
that will be used to control the
garage door until the garage
door moves. The indicator light,
above the selected button,
should slowly blink. This button
may need to be held for up to
20 seconds.
4. Immediately, within one second, release the button when the
garage door moves. The
indicator light will blink rapidly
until programming is complete.
5. Press and release the same button again. The garage door
should move, confirming that
programming is successful and
complete. To program another Rolling Code
device such as an additional
garage door opener, a security
device, or home automation device,
repeat Steps 1 through 5, choosing
a different function button in Step 3
than what was used for the garage
door opener.
If these instructions do not work,
the garage door opener is probably
a Fixed Code unit. Follow the
programming instructions that
follow for a Fixed Code garage
door opener.

Black plate (61,1)GMC Yukon/Yukon XL Owner Manual - 2011
Instruments and Controls 5-61
To program another Fixed Code
device such as an additional garage
door opener, a security device,
or home automation device, repeat
Steps 1-8, choosing a different
button in Step 6 than what was used
for the garage door opener.
Universal Remote System
Operation
Press and hold the appropriate
button for at least half of a second.
The indicator light will come on
while the signal is being transmitted.
Reprogramming Universal
Home Remote Buttons
Any of the three buttons can be
reprogrammed by repeating the
instructions.
Erasing Universal Home
Remote Buttons
The programmed buttons should be
erased when the vehicle is sold or
the lease ends.
To erase either Rolling Code
or Fixed Code settings on the
Universal Home Remote device:
1. Press and hold the two outsidebuttons at the same time for
approximately 20 seconds,
until the indicator lights, located
directly above the buttons, begin
to blink rapidly.
2. Once the indicator lights begin to blink, release both buttons. The
codes from all buttons will be
erased. For help or information on the
Universal Home Remote System,
call the customer assistance phone
number under
Customer Assistance
Offices on page 13‑3.

Black plate (11,1)GMC Yukon/Yukon XL Owner Manual - 2011
Infotainment System 7-11
XM Radio Messages
XL (Explicit Language
Channels):These channels,
or any others, can be blocked at
a customer's request, by calling
1-800-929-2100 in the U.S. and
1-877-438-9677 in Canada.
XM Updating: The encryption code
in the receiver is being updated,
and no action is required. This
process should take no longer than
30 seconds.
No XM Signal: The system is
functioning correctly, but the vehicle
is in a location that is blocking the
XM signal. When the vehicle is
moved into an open area, the signal
should return.
Loading XM: The audio system is
acquiring and processing audio and
text data. No action is needed. This
message should disappear shortly.
Channel Off Air: This channel is
not currently in service. Tune in to
another channel. Channel Unauth:
This channel is
blocked or cannot be received with
your XM subscription package.
Channel Unavail: This previously
assigned channel is no longer
assigned. Tune to another station.
If this station was one of the
presets, choose another station for
that preset button.
No Artist Info: No artist
information is available at this time
on this channel. The system is
working properly.
No Title Info: No song title
information is available at this time
on this channel. The system is
working properly.
No CAT Info: No category
information is available at this time
on this channel. The system is
working properly.
No Information: No text or
informational messages are
available at this time on this
channel. The system is working
properly. No Subscription Please Renew:
The XM subscription needs to
be reactivated. Contact XM at
www.xmradio.com or call
1-800-929-2100 in the U.S.
and www.xmradio.ca or call
1-877-438-9677 in Canada.
CAT Not Found:
There are no
channels available for the selected
category. The system is working
properly.
XM Theftlocked: The XM receiver
in the vehicle could have previously
been in another vehicle. For security
purposes, XM receivers cannot be
swapped between vehicles. If this
message is received after having
the vehicle serviced, check with
your dealer.
XM Radio ID: If tuned to channel 0,
this message alternates with the
XM Radio eight‐digit radio ID label.
This label is needed to activate the
service.

Black plate (8,1)GMC Yukon/Yukon XL Owner Manual - 2011
9-8 Driving and Operating
Before You Go Off-Roading
.Have all necessary maintenance
and service work done.
.Make sure there is enough fuel,
that fluid levels are where they
should be, and that the spare
tire, if the vehicle has one, is
fully inflated.
.Be sure to read all the
information about
four-wheel-drive vehicles
in this manual.
.Make sure all underbody
shields, if the vehicle has them,
are properly attached.
.Know the local laws that apply
to off-roading where you will
be driving or check with law
enforcement people in the area.
.Be sure to get the necessary
permission if you will be on
private land.If you think you will need some
more ground clearance at the front
of your vehicle, you can remove the
front fascia lower air dam. The air
dam is held in place by two bolts
and 10 snaps accessible from
underneath the front fascia.
To remove the air dam:
1. Remove the two outboard air
dam bolts.
2. With a flat‐blade tool, disengage the snaps.
3. After the bolts are removed and the snaps are disengaged, push
forward on the air dam until it
is free.
Notice: Operating your vehicle
for extended periods without
the front fascia lower air dam
installed can cause improper air
flow to the engine. Always be
sure to replace the front fascia
air dam when you are finished
off-road driving. After off-roading, be sure to reinstall
the air dam:
1. Line up the snaps and push the
air dam rearward to engage the
snaps.
2. Install the two outboard bolts.
Loading Your Vehicle for
Off-Road Driving
{WARNING
.Cargo on the load floor piled
higher than the seatbacks
can be thrown forward during
a sudden stop. You or your
passengers could be injured.
Keep cargo below the top of
the seatbacks.
.Unsecured cargo on the
load floor can be tossed
about when driving over
rough terrain. You or your
passengers can be struck
by flying objects. Secure the
cargo properly. (Continued)

Black plate (9,1)GMC Yukon/Yukon XL Owner Manual - 2011
Driving and Operating 9-9
WARNING (Continued)
.Heavy loads on the roof raise
the vehicle's center of gravity,
making it more likely to roll
over. You can be seriously or
fatally injured if the vehicle
rolls over. Put heavy loads
inside the cargo area, not on
the roof. Keep cargo in the
cargo area as far forward and
low as possible.
There are some important things to
remember about how to load your
vehicle.
.The heaviest things should be
on the floor, forward of the rear
axle. Put heavier items as far
forward as you can.
.Be sure the load is properly
secured, so things are not
tossed around. You will find other important
information under
Vehicle Load
Limits on page 9‑23 andTires on
page 10‑48.
Environmental Concerns
Off-road driving can provide
wholesome and satisfying
recreation. However, it also raises
environmental concerns. We
recognize these concerns and urge
every off-roader to follow these
basic rules for protecting the
environment:
.Always use established trails,
roads, and areas that have been
specially set aside for public
off-road recreational driving and
obey all posted regulations.
.Avoid any driving practice
that could damage shrubs,
flowers, trees, or grasses or
disturb wildlife. This includes
wheel-spinning, breaking down
trees, or unnecessary driving
through streams or over soft
ground.
.Always carry a litter bag and
make sure all refuse is removed
from any campsite before
leaving.
.Take extreme care with open
fires (where permitted), camp
stoves, and lanterns.
.Never park your vehicle over
dry grass or other combustible
materials that could catch fire
from the heat of the vehicle's
exhaust system.
Traveling to Remote Areas
It makes sense to plan your trip,
especially when going to a remote
area. Know the terrain and plan
your route. Get accurate maps of
trails and terrain. Check to see if
there are any blocked or closed
roads.
It is also a good idea to travel with
at least one other vehicle in case
something happens to one of them.

Black plate (27,1)GMC Yukon/Yukon XL Owner Manual - 2011
Driving and Operating 9-27
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
This can cause systems to
break and change the way the
vehicle handles. This could
cause loss of control and a
crash. Overloading can also
shorten the life of the vehicle.
Notice: Overloading the
vehicle may cause damage.
Repairs would not be covered
by the vehicle warranty. Do
not overload the vehicle.
The label will help you decide
how much cargo and installed
equipment your truck can carry. Using heavier suspension
components to get added
durability might not change
your weight ratings. Ask your
dealer to help you load your
vehicle the right way.
If you put things inside your
vehicle
—like suitcases,
tools, packages, or anything
else —they go as fast as the
vehicle goes. If you have to stop
or turn quickly, or if there is a
crash, they will keep going.
{WARNING
Things you put inside the
vehicle can strike and injure
people in a sudden stop or
turn, or in a crash.
.Put things in the cargo
area of the vehicle. Try to
spread the weight evenly.
(Continued)
WARNING (Continued)
.Never stack heavier
things, like suitcases,
inside the vehicle so that
some of them are above
the tops of the seats.
.Do not leave an
unsecured child restraint
in the vehicle.
.When you carry something
inside the vehicle, secure
it whenever you can.
.Do not leave a seat folded
down unless you need to.
There is also important loading
information for off-road driving in
this manual. See “Loading Your
Vehicle for Off-Road Driving”
under Off-Road Driving on
page 9‑7.

Black plate (32,1)GMC Yukon/Yukon XL Owner Manual - 2011
9-32 Driving and Operating
Operate the engine and
transmission gently until the
oil warms up and lubricates all
moving parts.
Notice: The engine is designed
to work with the electronics in
the vehicle. If you add electrical
parts or accessories, you could
change the way the engine
operates. Before adding electrical
equipment, check with your
dealer. If you do not, the engine
might not perform properly. Any
resulting damage would not be
covered by the vehicle warranty.Engine Heater
The engine coolant heater can
provide easier starting and better
fuel economy during engine
warm-up in cold weather conditions
at or below −18°C (0°F). Vehicles
with an engine heater should be
plugged in at least four hours before
starting. An internal thermostat in
the plug-end of the cord may exist
which will prevent engine coolant
heater operation at temperatures
above −18°C (0°F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap
the electrical cord. The cord
is secured to the Engine
Compartment Fuse Block
with a clip. Carefully remove
the wire tie which secures the
electrical cord. Do not cut the
electrical cord. 3. Plug the cord into a normal,
grounded 110-volt AC outlet.
{WARNING
Plugging the cord into an
ungrounded outlet could cause an
electrical shock. Also, the wrong
kind of extension cord could
overheat and cause a fire. You
could be seriously injured. Plug
the cord into a properly grounded
three-prong 110-volt AC outlet.
If the cord will not reach, use a
heavy-duty three-prong extension
cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug and store the
cord as it was before to keep
it away from moving engine
parts. If you do not, it could be
damaged.

Black plate (76,1)GMC Yukon/Yukon XL Owner Manual - 2011
9-76 Driving and Operating
Driving with a Trailer
{WARNING
When towing a trailer, exhaust
gases may collect at the rear
of the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
Engine exhaust contains Carbon
Monoxide (CO) which cannot be
seen or smelled. It can cause
unconsciousness and even death.
To maximize safety when towing
a trailer:
.Have the exhaust system
inspected for leaks and make
necessary repairs before
starting a trip.
.Never drive with the liftgate,
trunk/hatch, or rear-most
window open.(Continued)
WARNING (Continued)
.Fully open the air outlets
on or under the instrument
panel.
.Adjust the Climate Control
system to a setting that
brings in only outside air
and set the fan speed to the
highest setting. See Climate
Control System in the Index.
For more information about
Carbon Monoxide, see Engine
Exhaust on page 9‑36.
Towing a trailer requires a certain
amount of experience. The
combination you are driving is
longer and not as responsive as the
vehicle itself. Get acquainted with
the handling and braking of the rig
before setting out for the open road. Before starting, check all trailer
hitch parts and attachments, safety
chains, electrical connectors,
lamps, tires and mirrors. If the
trailer has electric brakes, start the
combination moving and then apply
the trailer brake controller by hand
to be sure the brakes work.
During the trip, check occasionally
to be sure that the load is secure
and the lamps and any trailer
brakes still work.
Following Distance
Stay at least twice as far behind the
vehicle ahead as you would when
driving the vehicle without a trailer.
This can help to avoid heavy
braking and sudden turns.
Passing
More passing distance is needed
when towing a trailer. The
combination will not accelerate
as quickly and is longer so it is
necessary to go much farther
beyond the passed vehicle before
returning to the lane.

Black plate (95,1)GMC Yukon/Yukon XL Owner Manual - 2011
Driving and Operating 9-95
Say, for example, you have a 318 kg
(700 lb) snow plow. The total weight
of all occupants and cargo inside
the cab should not exceed 135 kg
(300 lb). This means that you may
only be able to carry one passenger.
But, even this may be too much if
there is other equipment already
adding to the weight of the vehicle.
Here are some guidelines for safely
carrying a snow plow on the vehicle:
.Make sure the weight on the
front and rear axles does not
exceed the axle rating for each.
.For the front axle, if more cargo
or passengers must be carried,
appropriate counter ballast must
be installed rear of the rear axle.
Counter ballast must be properly
secured so it will not move
during driving.
.Follow the snow plow
manufacturer's
recommendations regarding
rear ballast. Rear ballast may
be required to ensure a proper
front and rear weight distribution
ratio, even though the actual
weight at the front axle may be
less than the front axle rating.
.The snow plow manufacturer
or installer can assist in
determining the amount of rear
ballast required, to help make
sure the snowplow/vehicle
combination does not exceed
the GVW rating, the front and
rear axle ratings, and the front
and rear weight distribution ratio.
.The total vehicle must not
exceed the GVW rating.Front axle reserve capacity is the
difference between the front Gross
Axle Weight Rating (GAWR) and the
front axle weight of the vehicle with
full fuel and passengers. Basically, it
is the amount of weight that can be
added to the front axle before
reaching the front GAWR.
The front axle reserve capacity
for the vehicle can be found
in the lower right corner of the
Certification/Tire label, as shown.
United States