heating GMC SIERRA 2007 Owner's Manual

Remote Vehicle Start
Your vehicle may have a remote starting feature.
This feature allows you to start the engine
from outside of the vehicle. It may also start up
the vehicle’s heating or air conditioning systems
and rear window defogger. Normal operation of the
system will return after the key is turned to the
RUN position.
During a remote start, if your vehicle has an
automatic climate control system, the climate
control system will default to a heating mode
during colder outside temperatures and a cooling
mode during warmer outside temperatures. If
your vehicle does not have an automatic climate
control system, during remote start, the climate
control system will turn on at the setting the vehicle
was set to when the vehicle was last turned off.
During a remote start, if your vehicle has an
automatic climate control system and heated
seats, the heated seats will turn on during colder
outside temperatures and will shut off when
the key is turned to RUN.If your vehicle does not have an automatic climate
control system, during remote start, you will
need to manually turn the heated seats on and off.
SeeHeated Seats on page 12for additional
information.
Laws in some communities may restrict the use of
remote starters. For example, some laws may
require a person using the remote start to have the
vehicle in view when doing so. Check local
regulations for any requirements on remote starting
of vehicles.
Do not use the remote start feature if your vehicle
is low on fuel. Your vehicle may run out of fuel.
The RKE transmitter with the remote start button,
provides an increased range of operation.
However, the range may be less while the vehicle
is running. As a result, you may need to be
closer to your vehicle to turn it off, than you were
to turn it on.
There are other conditions which can affect the
performance of the transmitter, seeRemote
Keyless Entry (RKE) System on page 110for
additional information.
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Notice:Adding any electrical equipment to
your vehicle may damage it or keep other
components from working as they should. The
repairs would not be covered by your
warranty. Do not use equipment exceeding
maximum amperage rating of 20 amperes.
Check with your dealer/retailer before adding
electrical equipment.
When adding electrical equipment, be sure to
follow the proper installation instructions included
with the equipment.
Notice:Improper use of the power outlet can
cause damage not covered by your warranty.
Do not hang any type of accessory or
accessory bracket from the plug because the
power outlets are designed for accessory
power plugs only.Ashtray(s) and Cigarette Lighter
Your vehicle may have a front ashtray located near
the center of the instrument panel. Pull on the door
to open it. The ashtray may have a cigarette lighter.
Notice:If you put papers, pins, or other
ammable items in the ashtray, hot cigarettes
or other smoking materials could ignite
them and possibly damage your vehicle. Never
put ammable items in the ashtray.
To remove the ashtray, open the door and pull the
ashtray bin toward you. To replace the ashtray,
insert the ashtray bin inside the ashtray door and
press down until it engages. To use the cigarette
lighter, push it in all the way, and let go. When it is
ready, the lighter will pop back out by itself.
Notice:Holding a cigarette lighter in while it
is heating does not let the lighter back
away from the heating element when it is hot.
Damage from overheating can occur to the
lighter or heating element, or a fuse could be
blown. Do not hold a cigarette lighter in while it
is heating.
233

Climate Controls
Climate Control System (With Air
Conditioning)
With this system you can control the heating,
cooling, and ventilation for your vehicle.
Operation
9
(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed. Turn the knob all the way counterclockwise
to turn the front system off.Temperature Control:Turn the center knob
clockwise or counterclockwise to increase
or decrease the temperature inside the vehicle.
Use the right knob to select from the
following modes:
The right knob can be positioned between
two modes to select a combination of those
two modes.
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs half of the air to
the instrument panel outlets and half to the
oor outlets.
6(Floor):This mode directs most of the air to
the oor outlets with some air directed to the
windshield and side window outlets. In this mode,
the system will automatically select outside air.
Recirculation cannot be selected in oor mode.
The right knob may also be used to select the
defrost and defog mode. For more information, see
“Defogging and Defrosting” later in this section.
234

Climate Control System
(Heater Only)
With this system you can control the heating,
cooling, and ventilation for your vehicle.
Operation
9
(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan
speed. Turn the knob all the way counterclockwise
to turn the front system off.Temperature Control:Turn the center knob
clockwise or counterclockwise to increase
or decrease the temperature inside the vehicle.
Use the right knob to select from the
following modes:
The right knob can be positioned between
two modes to select a combination of those
two modes.
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs half of the air to
the instrument panel outlets and to the oor outlets.
6(Floor):This mode directs most of the air to
the oor outlets with some air directed to the
windshield, side window outlets, and second row
oor outlets. In this mode, the system will
automatically select outside air.
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Defogging and Defrosting
Fog or frost on the inside of windows is a result of
high humidity (moisture) condensing on the cool
window glass. This can be minimized if the climate
control system is used properly.
Turn the right knob to select the defog or
defrost mode.
-(Defog):This mode clears the windows of fog
or moisture and warm the passengers. The air
is directed to the windshield, oor outlets, and side
window vents.
0(Defrost):This mode removes fog or frost
from the windshield more quickly. A portion of the
air is directed to the windshield and the side
window vents, with some air directed to the oor
vents. The system will automatically force
outside air into the vehicle.
Do not drive the vehicle until all the windows
are clear.
Dual Automatic Climate
Control System
With this system, you can control the heating,
cooling, and ventilation in the vehicle. The vehicle
also has a ow-through ventilation system
described later in this section.
You can select different climate control settings for
the driver and passengers.
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Notice:Do not use a razor blade or sharp
object to clear the inside rear window. Do not
adhere anything to the defogger grid lines
in the rear glass. These actions may damage
the rear defogger. Repairs would not be
covered by your warranty.
W(Heated Mirrors):If your vehicle has heated
outside rearview mirrors, the mirrors will heat
to help clear fog or frost from the surface of the
mirror when the rear window defog button is
pressed. SeeOutside Power Mirrors on page 176.
Outlet Adjustment
Use the air outlets located in the center and on
the side of the instrument panel to direct the
airow.
Operation Tips

Keep the hood and front air inlets free of ice,
snow, or any other obstruction, such as
leaves. The heater and defroster will work
better, reducing the chance of fogging
the inside of your windows.
When you enter a vehicle in cold weather, set
the fan speed to maximum airow for a few
moments before driving. This helps clear
the intake ducts of snow and moisture, and
reduces the chance of fogging the inside
of your windows.
Keep the air path under the front seats clear
of objects. This helps air to circulate
throughout your vehicle.
Adding outside equipment to the front of the
vehicle, such as hood-air deectors, may affect
the performance of the heating and air
conditioning system. Check with your dealer
before adding equipment to the outside of
your vehicle.
245

StabiliTrak®Indicator Light
If equipped, this warning
light should come on
briey when the engine
is started.
If the warning light does not come on then, have it
xed so it will be ready to warn you if there is a
problem. If it stays on, or comes on when you are
driving, there may be a problem with your
StabiliTrak
®system and your vehicle may need
service. When this warning light is on, the system
is off and will not limit wheel spin. Adjust your
driving accordingly.
This light will also ash when the StabiliTrak
®
system is active.
If the StabiliTrak
®system warning light comes on
and stays on for an extended period of time
when the system is turned on, your vehicle needs
service. SeeStabiliTrak
®System on page 381
for more information.
Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
It also provides an indicator of how hard your
vehicle is working. During a majority of the
operation, the gage will read 210°F (100°C) or
less. If you are pulling a load or going up hills, it is
normal for the temperature to uctuate and go
over the 235°F (113°C) mark. However, if the gage
reaches the 260°F (125°C) mark, it indicates
that the cooling system is working beyond
its capacity.
SeeEngine Overheating on page 516.
United StatesCanada
258

ENGINE OVERHEATED IDLE ENGINE
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible. See
Engine Overheating on page 516for more
information.
This message displays when the engine coolant
temperature is too hot. Stop and allow the vehicle
to idle until it cools down. SeeEngine Coolant
Temperature Gage on page 258.
SeeOverheated Engine Protection Operating
Mode (V8 Engines Only) on page 519for
information on driving to a safe place in an
emergency.
ENGINE OVERHEATED STOP ENGINE
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible. See
Engine Overheating on page 516for more
information.This message displays and a chime sounds if the
engine cooling system reaches unsafe
temperatures for operation. Stop and turn off the
vehicle as soon as it is safe to do so to avoid
severe damage. This message clears when the
engine has cooled to a safe operating temperature.
ENGINE POWER IS REDUCED
This message displays and a chime sounds when
the cooling system temperature gets too hot
and the engine further enters the engine coolant
protection mode. SeeEngine Overheating on
page 516for further information.
This message also displays when the vehicle’s
engine power is reduced. Reduced engine power
can affect the vehicle’s ability to accelerate. If this
message is on, but there is no reduction in
performance, proceed to your destination. The
performance may be reduced the next time the
vehicle is driven. The vehicle may be driven at a
reduced speed while this message is on, but
acceleration and speed may be reduced. Anytime
this message stays on, the vehicle should be taken
to your dealer for service as soon as possible.
282

SERVICE TRAILER BRAKE SYSTEM
On vehicles with the Integrated Trailer Brake
Control (ITBC) system, this message displays and
a chime sounds when there is a problem with
the ITBC system.
When this message displays, power is no longer
available to the trailer brakes.
As soon as it is safe to do so, carefully pull your
vehicle over to the side of the road and turn
the ignition off. Check the wiring connection to the
trailer and turn the ignition back on. If this
message still displays, either your vehicle or the
trailer needs service. See your dealer.
See “Integrated Trailer Brake Control System”
underTowing a Trailer on page 445for more
information.
STABILITRAK OFF
If your vehicle has StabiliTrak®, this message
displays when you turn off StabiliTrak®, or when
the stability control has been automatically
disabled. To limit wheel spin and realize the full
benets of the stability enhancement system, you
should normally leave StabiliTrak
®on. However,
you should turn StabiliTrak®off if your vehicle gets
stuck in sand, mud, ice, or snow and you wantto rock your vehicle to attempt to free it, or if you
are driving in extreme off-road conditions and
require more wheel spin. SeeIf Your Vehicle is
Stuck in Sand, Mud, Ice, or Snow on page 422.To
turn the StabiliTrak
®system on or off, see
StabiliTrak®System on page 381.
There are several conditions that can cause this
message to appear.
One condition is overheating, which could
occur if StabiliTrak®activates continuously
for an extended period of time.
The message also displays if the brake
system warning light is on. SeeBrake System
Warning Light on page 256.
The message could display if the stability
system takes longer than usual to complete its
diagnostic checks due to driving conditions.
The message displays if an engine or vehicle
related problem has been detected and the
vehicle needs service. See your dealer.
The message also displays if the vehicle is
shifted into 4LO.
The message turns off as soon as the conditions
that caused the message to be displayed are
no longer present.
287

TRANSMISSION HOT IDLE ENGINE
Notice:If you drive your vehicle while
the transmission uid is overheating and the
transmission temperature warning is displayed
on the instrument panel cluster and/or DIC,
you can damage the transmission. This could
lead to costly repairs that would not be
covered by your warranty. Do not drive your
vehicle with overheated transmission uid
or while the transmission temperature warning
is displayed.
This message displays along with a continuous
chime if the transmission uid in the vehicle
gets hot. Driving with the transmission uid
temperature high can cause damage to the
vehicle. Stop the vehicle and let it idle to allow the
transmission to cool. This message clears and
the chime stops when the uid temperature
reaches a safe level.
TURN SIGNAL ON
This message displays and a chime sounds if a
turn signal is left on for 3/4 of a mile (1.2 km).
Move the turn signal/multifunction lever to the off
position.
WASHER FLUID LOW ADD FLUID
This message displays when the windshield
washer uid is low. Fill the windshield washer uid
reservoir as soon as possible. SeeEngine
Compartment Overview on page 498for the
location of the windshield washer uid reservoir.
Also, seeWindshield Washer Fluid on page 527
for more information.
DIC Vehicle Customization
(With DIC Buttons)
Your vehicle may have customization capabilities
that allow you to program certain features to
one preferred setting. Customization features can
only be programmed to one setting on the
vehicle and cannot be programmed to a preferred
setting for two different drivers.
All of the customization options may not be
available on your vehicle. Only the options
available will be displayed on your DIC.
289