2010 GMC YUKON ECO mode

GENERAL MOTORS, GM, the GM Emblem, GMC,
the GMC Truck Emblem, and the name YUKON are
registered trademarks of General Motors LLC.
This manual describes features that may or may
not be on your specific vehicle either because they
are options that you did not purchase or due to changes
subsequent to the printing of this owner manual. Please
refer to the purchase documentation relating to your
specific vehicle to confirm each of the features found
on your vehicle. For vehicles first sold in Canada,
substitute the name“General Motors of Canada
Limited” for GMC wherever it appears in this manual.
If your vehicle is a Two-mode Hybrid, see the
Two-mode Hybrid manual for more information.
Keep this manual in the vehicle for quick reference.
Canadian Owners
Propriétaires Canadiens
A French language copy of this manual can be obtained
from your dealer or from:
On peut obtenir un exemplaire de ce guide en français
auprès du concessionnaire ou à l'adresse suivante: Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
Numéro de poste 6438 de langue française www.helminc.com
Index
To quickly locate information about the vehicle, use the
index in the back of the manual. It is an alphabetical list
of what is in the manual and the page number where it
can be found.
iii
Litho in U.S.A.
Part No. 25854762 B Second Printing©2009 General Motors. All Rights Reserved.

Safety Belt Pretensioners
This vehicle has safety belt pretensioners for
front outboard occupants. Although the safety
belt pretensioners cannot be seen, they are part
of the safety belt assembly. They can help tighten
the safety belts during the early stages of a moderate
to severe frontal, near frontal, or rear crash if the
threshold conditions for pretensioner activation are
met. And, if the vehicle has side impact airbags, safety
belt pretensioners can help tighten the safety belts in
a side crash or a rollover event.
Pretensioners work only once. If the pretensioners
activate in a crash, they will need to be replaced, and
probably other new parts for the vehicle's safety belt
system. SeeReplacing Restraint System Parts After a
Crash on page 2‑102.
Rear Safety Belt Comfort Guides
This vehicle may have rear shoulder belt comfort
guides. If not, they are available through your dealer.
The guides may provide added safety belt comfort for
older children who have outgrown booster seats and for
some adults. When installed and properly adjusted, the
comfort guide positions the belt away from the neck
and head. There is one guide, if equipped, for each outside
passenger position in the second row seat and the
third row, if the vehicle has one. Here is how to install
a comfort guide to the safety belt:Second Row
1. For the second row, remove the guide from its storage clip on the interior body.
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For models with a three passenger third row seat, see
the information following for installing a child restraint
with a top tether in the third row, if your vehicle has one.
Never install two top tethers using the same top tether
anchor.
For models with 60/40 second row seating, the rear
right side passenger and center seating positions have
exposed metal anchors located in the crease between
the seatback and the seat cushion.
For models with second row bucket seats, both rear
seating positions have exposed metal anchors located
in the crease between the seatback and the seat
cushion.
Second Row Seat—Bucket
For models with bucket second row seating, the top
tether anchors are located at the bottom rear of the
seat cushion for each seating position in the second
row. Be sure to use an anchor located on the same side
of the vehicle as the seating position where the child
restraint will be placed.
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Second Row Seat—60/40
For models with 60/40 second row seating, the top
tether anchors are located at the bottom rear of the
seat cushion for each seating position in the second
row. Be sure to use an anchor located on the same side
of the vehicle as the seating position where the child
restraint will be placed.Third Row Seat —Three Passenger
For vehicles with a three passenger third row seat,
there is one top tether anchor located at the bottom rear
of the seat cushion that can be used for either the third
row center or driver side seating position. Never install
two top tethers using the same top tether anchor.
Do not secure a child restraint in a position without a
top tether anchor if a national or local law requires that
the top tether be attached, or if the instructions that
come with the child restraint say that the top tether
must be attached.
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What Makes an Airbag Inflate?
In a deployment event, the sensing system sends an
electrical signal triggering a release of gas from the
inflator. Gas from the inflator fills the airbag causing the
bag to break out of the cover and deploy. The inflator,
the airbag, and related hardware are all part of the
airbag module.
Frontal airbag modules are located inside the
steering wheel and instrument panel. For vehicles
with seat‐mounted side impact airbags, there are
airbags modules in the side of the front seatbacks
closest to the door. For vehicles with roof-rail airbags,
there are airbag modules in the ceiling of the vehicle,
near the side windows that have occupant seating
positions.
How Does an Airbag Restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle.Airbags supplement the protection provided by safety
belts. Frontal airbags distribute the force of the impact
more evenly over the occupant's upper body, stopping
the occupant more gradually. Seat‐mounted side impact
and roof-rail airbags distribute the force of the impact
more evenly over the occupant's upper body.
Rollover capable roof-rail airbags are designed to
help contain the head and chest of occupants in the
outboard seating positions in the first, second, and third
rows, if equipped with a third row seat. The rollover
capable roof-rail airbags are designed to help reduce
the risk of full or partial ejection in rollover events,
although no system can prevent all such ejections.
But airbags would not help in many types of collisions,
primarily because the occupant's motion is not toward
those airbags. See
When Should an Airbag Inflate?
on
page 2‑89for more information.
Airbags should never be regarded as anything more
than a supplement to safety belts.
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{WARNING:
A crash severe enough to inflate the airbags may
have also damaged important functions in the
vehicle, such as the fuel system, brake and
steering systems, etc. Even if the vehicle appears
to be drivable after a moderate crash, there may
be concealed damage that could make it difficult
to safely operate the vehicle.
Use caution if you should attempt to restart the
engine after a crash has occurred.In many crashes severe enough to inflate the airbag,
windshields are broken by vehicle deformation.
Additional windshield breakage may also occur
from the right front passenger airbag..Airbags are designed to inflate only once. After an
airbag inflates, you will need some new parts for
the airbag system. If you do not get them, the
airbag system will not be there to help protect
you in another crash. A new system will include
airbag modules and possibly other parts.
The service manual for your vehicle covers
the need to replace other parts.
.The vehicle has a crash sensing and diagnostic
module which records information after a crash.
See
Vehicle Data Recording and Privacy
on
page 8‑17and Event Data Recorderson
page 8‑18.
.Let only qualified technicians work on the airbag
systems. Improper service can mean that an
airbag system will not work properly. See your
dealer for service.
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Express-Down/Up Windows
Windows with the express feature allow the windows to
be raised and lowered all the way without holding the
switch.
Press or pull the switch fully and release it to activate
the express feature.
The express mode can be canceled at any time by
briefly pressing or pulling the switch.
Express Window Anti-Pinch Feature
If any object is in the path of the window when the
express‐up is active, the window will stop at the
obstruction and auto‐reverse to a preset factory
position. Weather conditions such as severe icing
may also cause the window to auto‐reverse.
The window will return to normal operation once
the obstruction or condition is removed.
Express Window Anti‐Pinch Override
{WARNING:
If express override is activated, the window will
not reverse automatically. You or others could
be injured and the window could be damaged.
Before you use express override, make sure
that all people and obstructions are clear of the
window path.
In an emergency, the anti‐pinch feature can be
overridden in a supervised mode. Hold the window
switch all the way up to the second position.
The window will rise for as long as the switch is
held. Once the switch is released, the express
mode is re‐activated.
In this mode, the window can still close on an object in
its path. Use care when using the override mode.
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Active Fuel Management™
Vehicles with V8 engines may have Active Fuel
Management™. This system allows the engine to
operate on either all or half of its cylinders, depending
on the driving conditions.
When less power is required, such as cruising at a
constant vehicle speed, the system will operate in the
half cylinder mode, allowing the vehicle to achieve
better fuel economy. When greater power demands
are required, such as accelerating from a stop, passing,
or merging onto a freeway, the system will maintain
full-cylinder operation.
If the vehicle has an Active Fuel Management™
indicator, seeDIC Operation and Displays (With DIC
Buttons)
on page 4‑48or DIC Operation and Displays
(Without DIC Buttons)on page 4‑55for more
information on using this display .
Automatic Transmission Operation
If the vehicle is a Two-mode Hybrid, see the Two-mode
Hybrid manual for more information.
If the vehicle is has an automatic transmission, it has an
electronic shift position indicator within the instrument
panel cluster. This display comes on when the ignition
key is turned to the ON/RUN position.
There are several different positions for the shift lever.
Hydra-Matic®4-Speed
Automatic Transmission
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