light CHEVROLET UPLANDER 2008 1.G Service Manual

Electric Power Management
The vehicle has Electric Power Management (EPM)
that estimates the battery’s temperature and state
of charge. It then adjusts the voltage for best
performance and extended life of the battery.
When the battery’s state of charge is low, the voltage is
raised slightly to quickly put the charge back in. When
the state of charge is high, the voltage is lowered slightly
to prevent overcharging. If the vehicle has a voltmeter
gage or a voltage display on the Driver Information
Center (DIC), you may see the voltage move up
or down. This is normal. If there is a problem,
an alert will be displayed.
The battery can be discharged at idle if the electrical
loads are very high. This is true for all vehicles.
This is because the generator (alternator) may
not be spinning fast enough at idle to produce all
the power that is needed for very high electrical loads.A high electrical load occurs when several of the
following loads are on: headlamps, high beams, fog
lamps, rear window defogger, climate control fan at
high speed, heated seats, engine cooling fans, trailer
loads, and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s output
and the vehicle’s electrical needs. It can increase engine
idle speed to generate more power, whenever needed.
It can temporarily reduce the power demands of some
accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels of
corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as Battery Saver Active or
Service Battery Charging System. If this message is
displayed, it is recommended that the driver reduce the
electrical loads as much as possible. SeeDIC Warnings
and Messages on page 3-58.
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Power Outlet 115 Volt Alternating
Current
Your vehicle may have a power outlet that can be used
to plug in electrical equipment that uses a maximum
limit of 150 watts.
The power outlet is located
behind the third row seats
on the passenger’s side
rear quarter trim panel.
An indicator light on the outlet turns on to show it is in
use. The light comes on when the ignition is in ON/RUN
and equipment requiring less than 150 watts is plugged
into the outlet, and no system fault is detected.The indicator light does not come on when the ignition
is in LOCK/OFF or if no equipment is plugged into
the outlet.
If you try to connect equipment using more than
150 watts or a system fault is detected, a protection
circuit shuts off the power supply and the indicator light
turns off. To reset the circuit, unplug the item and plug it
back in or turn the Remote Accessory Power (RAP) off
and then back on. SeeRetained Accessory Power (RAP)
on page 2-32. The power restarts when equipment using
150 watts or less is plugged into the outlet and a system
fault is not detected.
The power outlet is not designed for the following
electrical equipment and may not work properly if
these items are plugged into the power outlet:
Equipment with high initial peak wattage such
as: compressor-driven refrigerators and electric
power tools.
Other equipment requiring an extremely stable
power supply such as: microcomputer-controlled
electric blankets, touch sensor lamps, etc.
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Cigarette Lighter
Your vehicle may have a cigarette lighter. To use the
lighter, located on the instrument panel below the
climate controls, push it in all the way and let go.
When it is ready, it 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.
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.
Climate Controls
Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
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Operation
Turn the right knob clockwise or counterclockwise to
direct the airow inside of your vehicle.
To change the current mode, select one of the following:
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, then directs the remaining
air to the oor outlets. Cooler air is directed to the
upper outlets and warmer air to the oor outlets.
6(Floor):This mode directs most of the air to the
oor outlets. Use this mode to send air to the rear of
the vehicle. Keep the area under the front seats free
of objects that could obstruct airow to the rear of
the vehicle.
The right knob can also be used to select defog or
defrost mode. For more information, see “Defogging
and Defrosting” later in this section.
Outside Air:This mode will be automatically selected
when your vehicle is in any mode except maximum
air conditioning.
A(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
Turn the knob to 0 to turn off the fan. The fan must
be turned on for the air conditioning compressor
to operate.
Temperature Control:Turn the center knob clockwise
or counterclockwise to increase or decrease the air
temperature inside your vehicle.
#(Air Conditioning):Press this button to turn the
air-conditioning system on or off. When it is pressed,
an indicator light in the button will come on to let
you know that air conditioning is activated.
You may notice a slight change in engine performance
when the air conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
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Rear Window Defogger
If your vehicle has a rear window defogger a warming
grid is used to remove fog from the rear window.
<REAR:Press this button to turn the rear window
defogger on or off. An indicator light in the button
will come on to let you know that the rear window
defogger is activated.
The rear window defogger will turn off about 15 minutes
after the button is pressed. If turned on again, the
defogger will only run for about ve minutes before
turning off. The defogger can also be turned off by
pressing the button again or by turning off the engine.
Notice:Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would
not be covered by your warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.
Dual Climate Control System
Your vehicle may have a dual climate control system.
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 to 0 to turn off the fan. The fan must be
turned on for the air conditioning compressor to operate.
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Temperature Control:Use the driver’s and
passenger’s levers to increase or decrease the air
temperature inside your vehicle.
Turn the right knob clockwise or counterclockwise to
direct the airow inside of your vehicle.
To change the current mode, select one of the following:
@MAX A/C (Maximum Air Conditioning):
Turn the right knob to this position for maximum air
conditioning. This will select air conditioning and
recirculation for maximum cooling of your vehicle.
Recirculation:This mode keeps outside air from
coming in the vehicle. It can be used to prevent outside
air and odors from entering your vehicle or help heat
or cool the air inside your vehicle more quickly.
This mode will automatically be selected when
maximum air conditioning is selected.
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, then directs the remaining
air to the oor outlets. Cooler air is directed to the
upper outlets and warmer air to the oor outlets.
6(Floor):This mode directs most of the air to the
oor outlets. Use this mode to send air to the rear of the
vehicle. Keep the area under the front seats free of
objects that could obstruct airow to the rear of
the vehicle.
Outside Air:This mode is automatically selected
when your vehicle is in any mode except maximum
air conditioning.
The right knob can also be used to select defog or
defrost mode. For more information, see “Defogging
and Defrosting” later in this section.
#(Air Conditioning):Press this button to turn the air
conditioning system on or off. When it is pressed, an
indicator light in the button will come on to let you know
that air conditioning is activated.
You may notice a slight change in engine performance
when the air conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
On hot days, open the windows to let hot inside air
escape; then close them and switch to maximum
air conditioning mode. This helps to reduce the time
it takes for your vehicle to cool down. It also helps the
system to operate more efficiently.
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The air conditioning system removes moisture from the
air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
((Heated Seats):Press this button to turn on the
heated seats. The button on the left controls the driver’s
seat and the button on the right controls the passenger’s
seat. SeeHeated Seats on page 1-3for additional
information.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity,
or moisture, condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from your windshield. Use the defog mode to clear the
windows of fog or moisture and warm the passengers.
Use the defrost mode to remove fog or frost from the
windshield more quickly.
Turn the right knob to select the defog or defrost mode.
-(Defog):This mode directs air to the windshield
and the oor outlets. When this mode is selected, the
system runs the air conditioning compressor unless
the outside temperature is at or below freezing.
The recirculation mode cannot be selected while in the
defog mode.
0(Defrost):This mode directs most of the air to the
windshield and the side window outlets, with some
air directed to the oor outlets. In this mode, the system
will automatically run the air conditioning compressor,
unless the outside temperature is at or below freezing.
Recirculation cannot be selected while in the
defrost mode.
Do not drive the vehicle until all the windows are clear.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger):Press this button to
turn the rear window defogger on or off. An indicator
light in the button will come on to let you know that the
rear window defogger is activated.
The rear window defogger will turn off about 15 minutes
after the button is pressed. If turned on again, the
defogger will only run for about ve minutes before
turning off. The defogger can also be turned off by
pressing the button again or by turning off the engine.
Notice:Do not use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs would not be
covered by your warranty. Do not attach a temporary
vehicle license, tape, a decal or anything similar to
the defogger grid.
3-29

When the front climate control is in AUX and the rear
climate control fan or temperature button is pressed, the
display will show the same airow modes as the front
climate control system. SeeDual Climate Control
System on page 3-27.
The front control must be in the AUX position to enable
adjustment of the temperature and fan speed on the
rear control system. If it is not in AUX, pressing the
fan or temperature button on the rear climate control
will show a DISABLED message on the Rear Seat
Entertainment (RSE) system display.
qg(Decrease Setting):Press this button to
decrease the fan or temperature setting while arrows
are displayed.
rl(Increase Setting):Press this button to increase
the fan or temperature setting while arrows are displayed.
9(Fan)b(Temperature):Press this button once
to enable adjustment of the fan speed. The current
fan speed setting and arrows are highlighted on
the display screen. Press either the left or the right
arrow button to increase or decrease fan speed.
The on screen display disappears after a few seconds.
Press this button twice to enable temperature
adjustment. After pressing this button, the current
temperature settings are highlighted and appear
in the on screen display. The arrows indicate that
to increase or decrease temperature, press either
the left or right arrow button. The on screen display
disappears after a few seconds.
Press this button a third time to turn off the on screen
display.
QR:Press the up and down arrows to toggle
between the fan and temperature settings.
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Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to your
warning lights and gages could also save you or others
from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you will
see in the details on the next few pages, some warning
lights come on briey when you start the engine just to
let you know they’re working. If you are familiar with this
section, you should not be alarmed when this happens.Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages and
warning lights work together to let you know when
there’s a problem with your vehicle.
When one of the warning lights comes on and stays
on when you are driving, or when one of the gages
shows there may be a problem, check the section
that tells you what to do about it. Please follow
this manual’s advice. Waiting to do repairs can be
costly — and even dangerous. So please get to know
your warning lights and gages. They’re a big help.
3-34

Instrument Panel Cluster
Your instrument panel cluster is designed to let you know at a glance how your vehicle is running. You will know
how fast you are going, how much fuel you are using, and many other things you’ll need to drive safely and
economically. The indicator warning lights and gages are explained on the following pages.
United States version shown, Canada similar
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