2004 PONTIAC BONNEVILLE engine

?RECIRC (Recirculation):Press this button to
limit the amount of outside air coming into the vehicle. It
can be used to prevent outside air and odors from
entering your vehicle or to help heat or cool the
air inside your vehicle more quickly. Press this button to
turn the recirculation mode on or off. When the button
is pressed, an indicator light will come on. The
recirculation mode cannot be used with the FRONT
defrost mode.
#A/C (Air Conditioning):Press this button to
override the automatic system and turn the air
conditioning system on or off. When A/C is pressed, an
indicator light in the button will come on to let you
know that it is activated. When in AUTO, the air
conditioning compressor will come on automatically, as
necessary. The air conditioning compressor will also
run when you select the FRONT defrost mode and
outside temperatures are above freezing.
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.
For quick cool down on hot days, press the AUTO
button and the system will automatically enter
recirculation mode and the temperature will be at the full
cold position for maximum cooling.Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
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.Sensors
The solar sensor on your vehicle monitors the solar
radiation and the air inside of your vehicle, then uses the
information to maintain the selected temperature by
initiating needed adjustments to the temperature, the fan
speed and the air delivery system. The system may
also supply cooler air to the side of the vehicle facing the
sun. The recirculation mode will also be activated, as
necessary. Do not cover the solar sensor located in the
center of the instrument panel, near the windshield,
or the system will not work properly.
There is also an EXT (exterior) temperature sensor
located behind the front grill. This sensor reads
the outside air temperature and helps to maintain the
temperature inside the vehicle. Any cover on the front of
the vehicle could cause a false reading in the
temperature.
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Defogging and Defrosting
Fog 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. 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 FRONT defrost mode to remove
fog or frost from the windshield more quickly.
Press the MODE button until DEFOG appears to select
this function. Press the FRONT button to select the
defrost function.
DEFOG:This mode directs the air equally between the
windshield and the oor outlets.
1FRONT (Defrost):Pressing this button directs
most of the air to the windshield and the outboard outlets
(for the side windows), with some air directed to the
oor outlets. When you select this mode, the system
turns off recirculation and runs the air conditioning
compressor unless the outside temperature is at
or below freezing. The recirculation mode cannot be
selected while in the FRONT 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 or frost from the rear window.
=REAR:Press this button to turn the rear window
defogger on or off. Be sure to clear as much snow from
the rear window as possible.
The rear window defogger will turn off about 10 minutes
after the button is pressed. If turned on again, the
defogger will only run for about ve minutes before
turning off. If you maintain a speed above 30 mph
(48 km/h), the rear defogger will not turn off
automatically to help keep the rear glass clear. The
defogger can also be turned off by pressing the button
again or by turning off the engine.
If your vehicle has outside heated mirrors, the mirrors will
heat to help clear fog or frost from the surface of the
mirror when the rear window defogger button is pressed.
Notice:Using a razor blade or sharp object to clear
the inside rear window may damage the rear
window defogger. Repairs would not be covered by
your warranty. Do not clear the inside of the rear
window with sharp objects.
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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 are 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 is 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 are a big help.
Your vehicle may also have a DIC that works along with
the warning lights and gages. SeeDriver Information
Center (DIC) on page 3-58.
The volume of your vehicle’s warning chimes can be
adjusted. For information seeChime Level Adjustment
on page 3-109.
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Tachometer
The tachometer shows
your engine speed
in revolutions per
minute (rpm).
Notice:If you operate the engine with the
tachometer in the shaded warning area, your vehicle
could be damaged, and the damages would not
be covered by your warranty. Do not operate
the engine with the tachometer in the shaded
warning area.
Safety Belt Reminder Light
When the key is turned to ON or START, a chime will
come on for several seconds to remind people to fasten
their safety belts.
The safety belt light will
also come on and stay on
for several seconds,
then ash for several more.
If the driver’s belt is already buckled, the light will come
on briey, but the chime will not sound.
3-40

Voltmeter Gage
When your engine is not
running, but the ignition
key is turned to ON,
this gage shows the state
of the battery charge in
DC volts.
When the ignition is running, the gage shows the
condition of the charging system. Readings between the
shaded warning zones indicate the normal operating
range. Readings in the shaded warning zones indicate a
possible problem in the electrical system.On vehicles with the systems monitor, the CHECK
GAGES light will also come on, and a warning chime
will sound if there is a problem in the electrical system.
Have your vehicle serviced immediately.
On vehicles with a DIC, a CHECK CHARGE SYSTEM
message will be displayed and a warning chime will
sound if there is a problem in the electrical system. Have
your vehicle serviced immediately. SeeDIC Warnings
and Messages on page 3-61for more information.
Brake System Warning Light
Your vehicle’s hydraulic brake system is divided into two
parts. If one part is not working, the other part can
still work and stop you. For good braking, though, you
need both parts working well.
If the warning light comes on, there is a brake problem.
Have your brake system inspected right away.
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Anti-Lock Brake System Warning
Light
With the anti-lock brake system, the light(s) will come
on when your engine is started and may stay on
for several seconds. That is normal.If the light stays on, turn the ignition to OFF. If the light
comes on when you are driving, stop as soon as
possible and turn the ignition off. Then start the engine
again to reset the system. If the light still stays on,
or comes on again while you are driving, your vehicle
needs service. If the regular brake system warning light
is not on, you still have brakes, but you do not have
anti-lock brakes. If the regular brake system warning
light is also on, you do not have anti-lock brakes
and there is a problem with your regular brakes. See
Brake System Warning Light on page 3-42.
The anti-lock brake system warning light will come on
briey when you turn the ignition key to ON. This is
normal. If the light does not come on then, have it xed
so it will be ready to warn you if there is a problem. United States
Canada
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Traction Control System (TCS)
Warning Light
For vehicles equipped with
the traction control system,
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 traction control system and
your vehicle may need service. When this warning light
is on, the system will not limit wheel spin. Adjust
your driving accordingly.The traction control system warning light may come on
for the following reasons:
If you turn the system off by pressing the
TRACTION CONTROL button located on the center
console, the warning light will come on and stay
on. To turn the system back on, press the button
again. The warning light should go off. SeeTraction
Control System (TCS) on page 4-9for more
information.
If there is a brake system problem that is specically
related to traction control, the traction control
system will turn off and the warning light will come
on. If your brakes begin to overheat, the traction
control system will turn off and the warning light will
come on until your brakes cool down.
If the traction control system is affected by an
engine-related problem, the system will turn off and
the warning light will come on.
If the traction control system warning light comes on
and stays on for an extended period of time when the
system is turned on, your vehicle needs service.
3-45

Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
To prevent engine overheating, the air conditioning
compressor will turn off automatically just prior to the
gage pointer entering the shaded area.As the engine cools down, the air conditioning
compressor will automatically turn back on. On vehicles
equipped with the DIC, the message ENGINE HOT... A/C
DISABLED will appear in the DIC display and a warning
chime will sound.
If the gage pointer moves into the shaded area, your
engine is too hot. On vehicles equipped with the
systems monitor, the CHECK GAGES light will come on
and a warning chime will sound.
On vehicles with a DIC, a CHECK GAGES
TEMPERATURE message will be displayed and a
warning chime will sound. SeeDIC Warnings and
Messages on page 3-61for more information.
SeeEngine Overheating on page 5-29, for information
on what to do if your engine overheats. United States
Canada
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