ECO mode GMC YUKON 2007 Owner's Guide

Press this button at the end of the shift lever to
enable tow/haul mode.
When the button is pressed, a light on the
instrument panel will illuminate to indicate that
Tow/Haul has been selected. Tow/Haul may
be turned off by pressing the button again, at
which time the indicator light on the instrument
panel will turn off. The vehicle will automatically
turn off tow/haul every time it is started.Tow/Haul is designed to be most effective
when the vehicle and trailer combined weight
is at least 75 percent of the vehicle’s Gross
Combination Weight Rating (GCWR). See “Weight
of the Trailer” later in this section. Tow/Haul is
most useful under the following driving conditions:
When pulling a heavy trailer or a large or
heavy load through rolling terrain.
When pulling a heavy trailer or a large or
heavy load in stop and go traffic.
When pulling a heavy trailer or a large or
heavy load in busy parking lots where
improved low speed control of the vehicle is
desired.
Operating the vehicle in Tow/Haul when lightly
loaded or with no trailer at all will not cause
damage. However, there is no benet to the
selection of Tow/Haul when the vehicle is
unloaded. Such a selection when unloaded may
result in unpleasant engine and transmission
driving characteristics and reduced fuel economy.
Tow/Haul is recommended only when pulling a
heavy trailer or a large or heavy load.
402

Trailer Wiring Harness
Heavy-Duty Trailer Wiring Package
Your vehicle is equipped with the seven-wire
trailer towing harness. This harness with a
seven-pin universal heavy-duty trailer connector is
attached to the rear bumper beam. It is located
next to the integrated trailer hitch.The seven-wire harness contains the following
trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Taillamps
White: Ground
Light Green: Back-up Lamps
Red w/ Black Stripe: Battery Feed*
Dark Blue: Trailer Brake*
*The fuses for these two circuits are installed in
the underhood electrical center, but the circuits are
not connected. They should be installed by your
dealer or a qualied service center.
If you are charging a remote (non-vehicle) battery,
press the tow/haul mode button located at the
end of the shift lever. This will boost the vehicle
system voltage and properly charge the battery.
If the trailer is too light for tow/haul mode, you can
turn on the headlamps as a second way to
boost the vehicle system and charge the battery.
414

Intended Outboard Sidewall:The side of an
asymmetrical tire, that must always face outward
when mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
Light Truck (LT-Metric) Tire:A tire used on
light duty trucks and some multipurpose passenger
vehicles.
Load Index:An assigned number ranging from
1 to 279 that corresponds to the load carrying
capacity of a tire.
Maximum Ination Pressure:The maximum
air pressure to which a cold tire may be inated.
The maximum air pressure is molded onto the
sidewall.
Maximum Load Rating:The load rating for a tire
at the maximum permissible ination pressure
for that tire.
Maximum Loaded Vehicle Weight:The sum of
curb weight, accessory weight, vehicle capacity
weight, and production options weight.Normal Occupant Weight:The number of
occupants a vehicle is designed to seat multiplied
by 150 lbs (68 kg). SeeLoading Your Vehicle
on page 392.
Occupant Distribution:Designated seating
positions.
Outward Facing Sidewall:The side of an
asymmetrical tire that has a particular side that
faces outward when mounted on a vehicle.
The side of the tire that contains a whitewall, bears
white lettering, or bears manufacturer, brand,
and/or model name molding that is higher
or deeper than the same moldings on the other
sidewall of the tire.
Passenger (P-Metric) Tire:A tire used on
passenger cars and some light duty trucks and
multipurpose vehicles.
Recommended Ination Pressure:Vehicle
manufacturer’s recommended tire ination
pressure as shown on the tire placard. See
Ination - Tire Pressure on page 488andLoading
Your Vehicle on page 392.
486

The TPMS sensor matching process is outlined
below:
1. Set the parking brake.
2. Turn the ignition switch to RUN with the
engine off.
3. Using the DIC, press the vehicle information
button until the PRESS
VTO RELEARN
TIRE POSITIONS message displays.
4. Press the set/reset button. The horn will
sound twice to indicate the TPMS receiver
is ready, and the TIRE LEARNING ACTIVE
message will display.
5. Start with the driver’s side front tire.
6. Remove the valve cap from the valve cap
stem. Activate the TPMS sensor by
increasing or decreasing the tire’s air pressure
for ve seconds, or until a horn chirp
sounds. The horn chirp, which make take up
to 30 seconds to sound, conrms that the
sensor identication code has been matched
to this tire and wheel position. To decrease
air-pressure out of a tire you can use the
pointed end of the valve cap, a pencil-style
air pressure gage, or a key.7. Proceed to the passenger’s side front tire, and
repeat the procedure in Step 6.
8. Proceed to the passenger’s side rear tire, and
repeat the procedure in Step 6.
9. Proceed to the driver’s side rear tire, and
repeat the procedure in Step 6.
10. After hearing the conrming horn chirp for the
driver’s side rear tire, the horn chirp will sound
two more times to signal the tire learning
mode is no longer active. Turn the ignition
switch to LOCK.
11. Set all four tires to the recommended air
pressure level as indicated on the Tire
and Loading Information label.
12. Put the valve caps back on the valve stems
The spare tire does not have a TPMS sensor.
If you replace one of the road tires with the spare,
the SERVICE TIRE MONITOR message will be
displayed on the DIC screen. This message should
go off once you re-install the road tire containing
the TPMS sensor.
494

In many instances, mechanical failures are covered
under GMC’s Bumper-to-Bumper warranty.
However, when other services are utilized, our
Roadside Assistance Representatives will explain
any payment obligations you might incur.
For prompt and efficient assistance when calling,
please provide the following to the Roadside
Assistance Representative:
Your name, home address, and home
telephone number.
Telephone number of your location.
Location of the vehicle.
Model, year, color, and license plate number
of the vehicle.
Odometer reading, Vehicle Identication
Number (VIN) and delivery date of the vehicle.
Description of the problem.While we hope you never have the occasion to
use our service, it is added security while traveling
for you and your family. Remember, we are
only a phone call away. U.S. customers call GMC
Roadside Assistance:1-800-462-8782, text
telephone (TTY) users, call1-888-889-2438.
Canadian customers call1-800-268-6800.
GMC and General Motors of Canada Limited
reserve the right to limit services or reimbursement
to an owner or driver when, in their sole
discretion, the claims become excessive in
frequency or type of occurrence.
Roadside Assistance is not part of or included in
the coverage provided by the New Vehicle Limited
Warranty. GMC and General Motors of Canada
reserve the right to make any changes or
discontinue the Roadside Assistance program at
any time without notication.
578

Vehicle Data Collection and Event
Data Recorders
Your vehicle, like other modern motor vehicles, has
a number of sophisticated computer systems that
monitor and control several aspects of the vehicle’s
performance. Your vehicle uses on-board vehicle
computers to monitor emission control components
to optimize fuel economy, to monitor conditions for
airbag deployment and, if so equipped, to provide
anti-lock braking and to help the driver control
the vehicle in difficult driving situations. Some
information may be stored during regular operations
to facilitate repair of detected malfunctions; other
information is stored only in a crash event by
computer systems, such as those commonly called
event data recorders (EDR).In a crash event, computer systems, such as the
Airbag Sensing and Diagnostic Module (SDM)
in your vehicle may record information about the
condition of the vehicle and how it was operated,
such as data related to engine speed, brake
application, throttle position, vehicle speed, safety
belt usage, airbag readiness, airbag performance,
and the severity of a collision. If your vehicle is
equipped with StabiliTrak
®, steering performance,
including yaw rate, steering wheel angle, and
lateral acceleration, is also recorded. This
information has been used to improve vehicle
crash performance and may be used to improve
crash performance of future vehicles and
driving safety. Unlike the data recorders on many
airplanes, these on-board systems do not
record sounds, such as conversation of vehicle
occupants.
582

Engine
Air Cleaner/Filter...................................... 437
Battery..................................................... 463
Check and Service Engine Soon Light..... 237
Coolant.................................................... 445
Coolant Heater......................................... 144
Coolant Temperature Gage...................... 236
Drive Belt Routing.................................... 564
Engine Compartment Overview................ 430
Exhaust................................................... 156
Fan Noise................................................ 456
Oil ........................................................... 432
Oil Life System........................................ 435
Overheated Protection Operating Mode.... 450
Overheating............................................. 448
Starting.................................................... 141
Entry Lighting.............................................. 207
Event Data Recorders (EDR)...................... 582
Exit Lighting................................................ 207
Extender, Safety Belt..................................... 60
Exterior Lamps............................................ 203F
Filter
Engine Air Cleaner................................... 437
Finish Damage............................................ 534
Flashers, Hazard Warning........................... 192
Flash-to-Pass.............................................. 195
Flat Tire...................................................... 505
Flat Tire, Changing...................................... 506
Flat Tire, Storing......................................... 522
Fluid
Automatic Transmission............................ 440
Power Steering........................................ 457
Windshield Washer.................................. 458
Fog Lamp Light........................................... 242
Fog Lamps.................................................. 206
Front Axle................................................... 471
Front Reading Lamps.................................. 208
Fuel............................................................ 423
Additives.................................................. 424
California Fuel.......................................... 424
Filling a Portable Fuel Container.............. 428
Filling Your Tank...................................... 426
Fuels in Foreign Countries....................... 425
Gage....................................................... 243
Gasoline Octane...................................... 423
598

Light (cont.)
StabiliTrak®Indicator................................ 235
Tire Pressure........................................... 236
Tow/Haul Mode........................................ 242
Lighting
Entry........................................................ 207
Exit.......................................................... 207
Loading Your Vehicle................................... 392
Locking Differential...................................... 349
Lockout Protection....................................... 125
Locks
Delayed Locking...................................... 123
Door........................................................ 122
Lockout Protection................................... 125
Power Door............................................. 123
Programmable Automatic Door Locks....... 124
Rear Door Security Locks........................ 124
Loss of Control........................................... 357
Low Fuel Warning Light............................... 244
Luggage Carrier.......................................... 179
Lumbar
Power Controls.......................................... 10M
Maintenance Schedule
Additional Required Services.................... 554
At Each Fuel Fill...................................... 558
At Least Once a Month............................ 558
At Least Once a Year.............................. 559
Introduction.............................................. 548
Maintenance Footnotes............................ 555
Maintenance Record................................ 565
Maintenance Requirements...................... 548
Normal Maintenance Replacement Parts ... 563
Owner Checks and Services.................... 557
Recommended Fluids and Lubricants....... 561
Scheduled Maintenance........................... 551
Using....................................................... 549
Your Vehicle and the Environment............ 549
Malfunction Indicator Light........................... 237
Memory Seat, Mirrors, and Pedals................ 12
Message
DIC Warnings and Messages................... 252
Mirrors
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display................................................. 158
Outside Power Foldaway Mirrors.............. 161
MyGMLink.com............................................ 573
601

N
Navigation/Radio System, see Navigation
Manual..................................................... 321
New Vehicle Break-In.................................. 139
Normal Maintenance Replacement Parts..... 563
O
Odometer.................................................... 227
Odometer, Trip............................................ 227
Off-Road Driving.......................................... 359
Off-Road Recovery...................................... 355
Oil
Engine..................................................... 432
Pressure Gage......................................... 240
Pressure Light.......................................... 241
Oil, Engine Oil Life System......................... 435
Older Children, Restraints............................. 61
Online Owner Center................................... 573
OnStar
®System, see OnStar®Manual........ 164
Other Warning Devices................................ 192
Outlet Adjustment........................................ 222
Outlet(s), Accessory Power.......................... 213Outside
Power Foldaway Mirrors........................... 161
Overheated Engine Protection
Operating Mode....................................... 450
Owner Checks and Services....................... 557
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 534
Park Aid...................................................... 208
Park (P)
Shifting Into............................................. 153
Shifting Out of......................................... 154
Parking
Assist....................................................... 208
Brake....................................................... 152
Over Things That Burn............................ 155
Passenger Airbag Status Indicator............... 230
Passenger Sensing System......................... 101
Passing....................................................... 356
PASS-Key
®III+........................................... 136
PASS-Key®III+ Operation........................... 137
602

T
Tachometer................................................. 227
Taillamps
Turn Signal, Stoplamps and Back-up
Lamps.................................................. 476
Theft-Deterrent, Radio................................. 335
Theft-Deterrent Systems.............................. 134
Content Theft-Deterrent............................ 135
PASS-Key
®III+........................................ 136
PASS-Key®III+ Operation........................ 137
Third Row Seat............................................. 32
Throttle, Adjustable...................................... 143
Tilt Wheel.................................................... 193
Tire
Pressure Light.......................................... 236
Tires........................................................... 480
Aluminum Wheels, Cleaning..................... 532
Buying New Tires..................................... 498
Chains..................................................... 504
Changing a Flat Tire................................ 506
Cleaning.................................................. 533
Different Size........................................... 500
High-Speed Operation.............................. 490
If a Tire Goes Flat................................... 505
Ination - Tire Pressure............................ 488Tires (cont.)
Inspection and Rotation............................ 496
Installing the Spare Tire........................... 512
Pressure Monitor System......................... 490
Removing the Flat Tire............................. 512
Removing the Spare Tire and Tools......... 507
Secondary Latch System......................... 518
Spare Tire................................................ 526
Storing a Flat or Spare Tire and Tools..... 522
Tire Sidewall Labeling.............................. 482
Tire Terminology and Denitions............... 485
Uniform Tire Quality Grading.................... 501
Wheel Alignment and Tire Balance........... 502
Wheel Replacement................................. 503
When It Is Time for New Tires................. 497
Tow/Haul Mode........................................... 150
Tow/Haul Mode Light................................... 242
Towing
Recreational Vehicle................................. 398
Towing a Trailer....................................... 400
Your Vehicle............................................. 398
Traction
Locking Differential................................... 349
StabiliTrak
®System................................. 349
Trailer
Recommendations.................................... 415
606