air condition GMC YUKON DENALI 2010 User Guide

R (Reverse) :Use this gear to back up.
Notice: Shifting to R (Reverse) while the vehicle is
moving forward could damage the transmission.
The repairs would not be covered by the vehicle
warranty. Shift to R (Reverse) only after the vehicle
is stopped.
To rock the vehicle back and forth to get out of snow,
ice, or sand without damaging the transmission, see If
Your Vehicle is Stuck in Sand, Mud, Ice, or Snow
on
page 5‑29.
N (Neutral) : In this position, the engine does not
connect with the wheels. To restart the engine when the
vehicle is already moving, use N (Neutral) only. Also,
use N (Neutral) when the vehicle is being towed.
{WARNING:
Shifting into a drive gear while the engine is
running at high speed is dangerous. Unless your
foot is firmly on the brake pedal, the vehicle could
move very rapidly. You could lose control and hit
people or objects. Do not shift into a drive gear
while the engine is running at high speed. Notice:
Shifting out of P (Park) or N (Neutral) with
the engine running at high speed may damage the
transmission. The repairs would not be covered by
the vehicle warranty. Be sure the engine is not
running at high speed when shifting the vehicle.
D (Drive) : This position is for normal driving. It provides
the best fuel economy for the vehicle. If you need more
power for passing, and you are:
.Going less than about 35 mph (55 km/h), push the
accelerator pedal about halfway down.
.Going about 35 mph (55 km/h) or more, push the
accelerator all the way down.
D (Drive) can be used when towing a trailer, carrying a
heavy load, driving on steep hills, or for off-road driving.
You may want to shift the transmission to a lower gear
selection if the transmission shifts too often.
Downshifting the transmission in slippery road
conditions could result in skidding, see “Skidding”
under Loss of Control on page 5‑11.
3-31

When temperatures are very cold, the Hydra-Matic®
Automatic Transmission's gear shifting may be delayed
providing more stable shifts until the engine warms up.
Shifts may be more noticeable with a cold transmission.
This difference in shifting is normal.
M (Manual Mode) :This position lets drivers select
the range of gears appropriate for current driving
conditions. See Range Selection Mode later in this
section.
Notice: Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator pedal
may damage the transmission. The repair will not be
covered by the vehicle warranty. If you are stuck,
do not spin the tires. When stopping on a hill, use
the brakes to hold the vehicle in place.
The vehicle has a shift stabilization feature that
adjusts the transmission shifting to the current driving
conditions in order to reduce rapid upshifts and
downshifts. This shift stabilization feature is designed to
determine, before making an upshift, if the engine will
be able to maintain vehicle speed by analyzing things
such as throttle position, vehicle load, and hill grade. If the shift stabilization feature determines that a current
vehicle speed cannot be maintained, the transmission
does not upshift and instead holds the current gear.
In some cases, this may appear to be a delayed shift,
however the transmission is operating normally.
The vehicle's transmission uses adaptive shift controls.
Adaptive shift controls continually compares key shift
parameters to pre‐programmed ideal shift conditions
stored in the transmissions computer. The transmission
constantly makes adjustments to improve vehicle
performance according to the way the vehicle is being
used, such as with a heavy load. During this adaptive
shift controls process, some shifts may feel different as
the transmission determines the best settings for a
particular shift.
3-32

The system can be
disabled by pressing the
rear park aid disable
button located next to the
radio.
The indicator light will come on and PARK ASSIST OFF
displays on the Driver Information Center (DIC) to
indicate that URPA is off, see DIC Warnings and
Messages on page 4‑56.
When the System Does Not Seem to
Work Properly
If the URPA system will not activate due to a temporary
condition, the messages PARK ASSIST OFF or PARK
ASST BLOCKED SEE OWNERS MANUAL will be
displayed on the DIC.
SERVICE PARK ASSIST : If this message occurs, take
the vehicle to your dealer/retailer to repair the system.
PARK ASSIST OFF : This message occurs if the driver
disables the system. PARK ASST BLOCKED SEE OWNERS MANUAL :
This message can occur under the following conditions:
.The ultrasonic sensors are not clean. Keep the
vehicle's rear bumper free of mud, dirt, snow, ice
and slush. For cleaning instructions, see
Washing
Your Vehicle on page 6‑102.
.The park assist sensors are covered by frost or
ice. Frost or ice can form around and behind the
sensors and may not always be seen; this can
occur after washing the vehicle in cold weather.
The message may not clear until the frost or ice
has melted.
.A trailer was attached to the vehicle, or a bicycle or
an object was hanging out of the liftgate during the
last drive cycle. Once the attached object is
removed, URPA will return to normal operation.
.A tow bar is attached to the vehicle.
.The vehicle's bumper is damaged. Take the vehicle
to your dealer/retailer to repair the system.
.Other conditions may affect system performance,
such as vibrations from a jackhammer or the
compression of air brakes on a very large truck.
If the system is still disabled, after driving forward at
least 40 km/h (25 mph), take the vehicle to your
dealer/retailer.
3-46

Section 4 Instrument Panel
Instrument Panel Overview. . . . . . . . . . . . . . . . . . . . . . . .4-3
Hazard Warning Flashers . . . . . . . . . . . . . . . . . . . . . . . 4-3
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Tilt Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Turn Signal/Multifunction Lever . . . . . . . . . . . . . . . . . . 4-4
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . 4-5
Headlamp High/Low-Beam Changer . . . . . . . . . . . . 4-5
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Windshield Wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Windshield Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Rear Window Wiper/Washer . . . . . . . . . . . . . . . . . . . . 4-7
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Exterior Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Headlamps on Reminder . . . . . . . . . . . . . . . . . . . . . . 4-12
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 4-12
Automatic Headlamp System . . . . . . . . . . . . . . . . . . 4-13
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Instrument Panel Brightness . . . . . . . . . . . . . . . . . . . 4-14
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Dome Lamp Override . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Front Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Electric Power Management . . . . . . . . . . . . . . . . . . . 4-15 Battery Run-Down Protection . . . . . . . . . . . . . . . . . . 4-16
Accessory Power Outlet(s) . . . . . . . . . . . . . . . . . . . . . 4-16
Ashtray(s) and Cigarette Lighter . . . . . . . . . . . . . . . 4-17
Climate Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Dual Automatic Climate Control System . . . . . . . 4-18
Outlet Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Rear Air Conditioning and Heating System
and Electronic Climate Controls . . . . . . . . . . . . . 4-24
Warning Lights, Gages, and Indicators . . . . . . . . . .4-25
Instrument Panel Cluster . . . . . . . . . . . . . . . . . . . . . . . 4-26
Speedometer and Odometer . . . . . . . . . . . . . . . . . . . 4-27
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Safety Belt Reminders . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Airbag Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Passenger Airbag Status Indicator . . . . . . . . . . . . . 4-29
Charging System Light . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Voltmeter Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Brake System Warning Light . . . . . . . . . . . . . . . . . . . 4-32
Antilock Brake System (ABS) Warning Light . . . 4-33
StabiliTrak
®Indicator Light . . . . . . . . . . . . . . . . . . . . . 4-33
Engine Coolant Temperature Gage . . . . . . . . . . . . 4-34
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
Malfunction Indicator Lamp . . . . . . . . . . . . . . . . . . . . 4-35
Oil Pressure Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4-1

Climate Controls
Dual Automatic Climate Control
System
The heating, cooling, and ventilation in the vehicle can
be controlled with this system. The vehicle also has a
flow-through ventilation system described later in this
section.
A. Fan Control
B. AUTO
C. Defrost
D. Recirculation E. REAR
F. Air Delivery Mode Control
G. Driver Temperature Control H. Display
I. Power Button
J. Rear Window Defogger K. Air Conditioning
L. PASS
M. Passenger Temperature Control
O(On/Off): Press to turn the climate control system
on or off. Outside air still enters the vehicle, and is
directed to the floor. This direction can be changed by
pressing the mode button. Recirculation can be
selected once you have selected vent or bi-level mode.
The temperature can also be adjusted using either
temperature button. If the air delivery mode or
temperature settings are adjusted with the system off,
the display illuminates briefly to show the settings and
then returns to off. The system can be turned back on
by pressing either
O,D,C,#, the defrost or the
AUTO button.
Driver and Passenger Side Temperature
Control
The driver and passenger side temperature buttons
are used to adjust the temperature of the air coming
through the system on the driver or passenger's side of
the vehicle. The temperature can be adjusted even if
the system is turned off. This is possible since outside
air always flows through the system as the vehicle is
moving forward unless it is set to recirculation mode.
See “Recirculation” later in this section.
4-18

Press the + or−buttons to increase or decrease the
cabin temperature. The driver side or passenger side
temperature display shows the temperature setting
decreasing or increasing.
The passenger's temperature setting can be set to
match the driver's temperature setting by pressing the
PASS button and turning off the PASS indicator. When
the passenger's temperature setting is set different than
the driver's setting, the indicator on the PASS button
illuminates and both the driver side and passenger side
temperature displays are shown.
When in defrost mode the passenger temperature
setting cannot be changed.
Automatic Operation
AUTO (Automatic) : When automatic operation is
active the system will control the inside temperature,
the air delivery, and the fan speed.
Use the steps below to place the entire system in
automatic mode:
1. Press the AUTO button.
When AUTO is selected, the display will change to
show the current temperature(s) and AUTO will be
lit on the display. The current delivery mode and
fan speed will also be displayed for approximately
5 seconds. When AUTO is selected, the air conditioning
operation and air inlet will be automatically
controlled. The air conditioning compressor will
run when the outside temperature is over about
4°C (40°F). The air inlet will normally be set to
outside air. If it is hot outside, the air inlet may
automatically switch to recirculate inside air to help
quickly cool down the vehicle. The light on the
button comes on in recirculation.
2. Set the driver's and passenger's temperature. To find your comfort setting, start with a 23°C
(74°F) temperature setting and allow about
20 minutes for the system to regulate. Use the
driver's or passenger's temperature buttons to
adjust the temperature setting as necessary. If a
temperature setting of 15°C (60°F) is chosen, the
system remains at the maximum cooling setting.
If a temperature setting of 32°C (90°F) is chosen,
the system remains at the maximum heat setting.
Choosing either maximum setting will not cause
the vehicle to heat or cool any faster.
Do not to cover the solar sensor located on the top of
the instrument panel near the windshield. This sensor
regulates air temperature based on sun load and also
turns on the headlamps. For more information on the
solar sensor, see “Sensors”later in this section.
4-19

To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on the engine coolant
temperature. Pressing the fan switch will override this
delay and change the fan to a selected speed.
Manual Operation
D C(Fan Control):Press these buttons to increase or
decrease the fan speed.
Pressing either fan button while in automatic control
places the fan under manual control. The fan setting
remains displayed and the AUTO light turns off. The air
delivery mode remains under automatic control.
H G(Air Delivery Mode Control): Press these buttons
to change the direction of the airflow in the vehicle.
Repeatedly press either button until the desired mode
appears on the display. Pressing either mode button
while the system is off changes the air delivery mode
without turning the system on. Pressing either mode
button while in automatic control places the mode under
manual control.
The air delivery mode setting is displayed and the
AUTO light turns off. The fan remains under automatic
control.
H(Vent): Air is directed to the instrument panel
outlets.
)(Bi-Level): Air is divided between the instrument
panel and floor outlets. Some air is directed towards the
windshield and side window outlets.
6(Floor): Air is directed to the floor outlets, with some
to the windshield, side window outlets, and second row
floor outlets. In this mode, the system automatically
selects outside air.
-(Defog): This mode clears the windows of fog or
moisture. Air is directed to the windshield, floor outlets,
and side window vents. In this mode, the system turns
off recirculation and runs the air conditioning
compressor unless the outside temperature is close to
freezing. The recirculation mode cannot be selected
while in the defog mode.
0(Defrost): This mode removes fog or frost from the
windshield more quickly. Air is directed to the
windshield and side window vents, with some directed
to the floor vents. In this mode, the system
automatically forces outside air into the vehicle and
runs the air conditioning compressor unless the outside
temperature is close to freezing. The recirculation mode
cannot be selected while in the defrost mode.
The passenger temperature control cannot be activated
while in defrost mode. If the PASS button is pressed,
the button indicator flashes three times and will not
4-20

work. If the passenger temperature buttons are
adjusted, the driver temperature indicator changes.
The passenger temperature will not be displayed.
If vent, bi-level, or floor mode is selected again,
the climate control system displays the previous
temperature settings.
Do not drive the vehicle until all the windows are clear.
#(Air Conditioning):Press to turn the air
conditioning (A/C) compressor on and off. An indicator
light comes on to show that the air conditioning is on.
If this button is pressed when the air conditioning
compressor is unavailable, the indicator flashes three
times and then turns off. If the air conditioning is on and
the outside temperature drops below a temperature
which is too cool for air conditioning to be effective,
the air conditioning light turns off to show that the air
conditioning mode has been canceled.
On hot days, open the windows long enough to let hot
inside air escape. This helps to reduce the time it takes
for the vehicle to cool down. It also helps the system to
operate more efficiently.
The air conditioning system removes moisture from the
air, so a small amount of water might drip under the
vehicle while idling or after turning off the engine.
This is normal.
@(Recirculation): Press to turn the recirculation
mode on or off. An indicator light comes on to show that
the recirculation is on.
This mode recirculates and helps to quickly cool the air
inside the vehicle. It can be used to help prevent
outside air and odors from entering the vehicle.
The recirculation mode cannot be used with floor, defog,
or defrost modes. If recirculation is selected with one of
those modes, the indicator light flashes three times and
then turns off. The air conditioning compressor also
comes on when this mode is activated. While in
recirculation mode the windows may fog when the
weather is cold and damp. To clear the fog, select either
the defog or defrost mode and increase the fan speed.
The recirculation mode can also be turned off by turning
off the ignition.
REAR : For vehicles with the rear heat and air
conditioning controls. Press to turn the rear climate
control system on or off. See Rear Air Conditioning and
Heating System and Electronic Climate Controls
on
page 4‑24.
4-21

Rear Air Conditioning and Heating
System and Electronic Climate
Controls
For vehicles with the rear heat and air conditioning
controls, they are integrated with the rear seat audio
controls located in the center console. The system can
be controlled from the front controls as well as the rear
controls.
Rear Climate Control with Rear Seat Audio Controls
A. Fan Control
B. Air Delivery Mode Control
C. Temperature Control REAR :
Press the REAR button on the front climate
control system to turn the rear climate control system on
or off. An indicator comes on when the rear system
is on.
The rear climate control system can also be turned off
by pressing and holding the
Cbutton. To turn the
system on from the rear seats, press any rear climate
control button, except the
Cbutton.
Mimic Mode : This mode matches the rear climate
control to the front climate control airflow settings.
It comes on when REAR is pressed the first time.
Independent Mode : This mode directs rear seating
airflow according to the settings of the rear controls.
To turn the system on from the rear, press any rear
climate control button, except the
Cbutton.
4-24

If the word ON or the on symbol is lit on the passenger
airbag status indicator, it means that the right front
passenger frontal airbag is enabled (may inflate).
If the word OFF or the off symbol is lit on the airbag
status indicator, it means that the passenger sensing
system has turned off the right front passenger frontal
airbag.
If, after several seconds, both status indicator lights
remain on, or if there are no lights at all, there may be
a problem with the lights or the passenger sensing
system. See your dealer/retailer for service.
{WARNING:
If the airbag readiness light ever comes on and
stays on, it means that something may be wrong
with the airbag system. To help avoid injury to
yourself or others, have the vehicle serviced right
away. SeeAirbag Readiness Light
on page 4‑28
for more information, including important safety
information.
Charging System Light
This light comes on briefly
when the ignition key is
turned to START, but the
engine is not running,
as a check to show it is
working.
If it does not, have the vehicle serviced by your
dealer/retailer.
The light should go out once the engine starts. If it stays
on, or comes on while driving, there could be a problem
with the charging system. A charging system message
in the Driver Information Center (DIC) can also appear.
See DIC Warnings and Messages
on page 4‑56for
more information. This light could indicate that there
are problems with a generator drive belt, or that there
is an electrical problem. Have it checked right away.
If the vehicle must be driven a short distance with the
light on, turn off accessories, such as the radio and
air conditioner.
4-30