2003 PONTIAC BONNEVILLE cooling

Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open
your door and set the locks from the inside. Then get out
and close the door.
You may also use the lock button
on the remote keyless entry transmitter after shutting
the doors.
If your vehicle has a theft-deterrent system, see
Universal Theft-Deterrent on page 2-21.
Trunk
L% CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle.
You can’t see or smell
CO.
It can cause unconsciousness and
even death.
CAUTION: (Continued) If
you must drive with the trunk lid open or if
electrical wiring
or other cable connections
must pass through the seal between the body
and the trunk
lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to
its highest speed and select the
control setting that will force outside air
into your vehicle. See “Climate Controls”
in the Index.
instrument panel, open them all the way.
If you have air outlets on or under the
See “Engine Exhaust” in the Index.
Trunk Lock Release
To unlock the trunk from the outside, insert the master
key and turn it.
2-1 6

Inadvertent Power Battery Saver
This feature is designed to protect your vehicle’s battery
against drainage from the interior lamps, trunk lamp,
glove box lamp or cigarette lighters. When the ignition is
turned
off, the power to these features will automatically
turn
off after 10 minutes. Power will be restored for
an additional
10 minutes if any door is opened, the trunk
is opened or the courtesy lamps are turned on. To
restore power back to the cigarette lighters the ignition
must be turned back to
ON.
Battery Load Management
The battery load management feature is designed to
monitor the vehicle’s electrical load and determine when
the battery is in a heavy discharge condition. During
times of high electrical loading, the engine may idle at
higher revolutions per minute (rpm) than normal to
make sure the battery charges. High electrical loads
may occur when several
of the following are on:
headlamps, high beams, fog lamps, rear window
defogger, fan on high speed, heated seats and engine
cooling fans.
If your vehicle’s battery remains in a heavy discharge
condition for a long period of time, the fan, rear
defogger, heated seats and heated mirrors will be
disabled and the DIC will display BATTERY SAVER
ACTIVE. This can happen either under long periods of
idling or low speed driving with high electrical loading,
or in the event of a charging system fault.
Monitor the battery voltage when in the BATTERY
SAVER ACTIVE mode.
If the voltmeter remains in the shaded area (below
11 volts) when driving then have the charging
system serviced immediately.
If the voltage increases above 12 volts then the
battery needs to be recharged.
Try driving on
the highway with as few electrical accessories on
as possible.
3-20

Climate Controls
Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
FAN: Turn the left knob clockwise or counterclockwise
knob to turn the fan on and
off. The fan must be on in
order for the air conditioning compressor to run.
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TEMP (Temperature Control): Turn the right knob
clockwise or counterclockwise to manually increase or
decrease
the temperature inside your vehicle,
To change the current mode, select one of the following:
(FLOOR): This mode directs most of the air to
the floor outlets with some air directed to the outboard
outlets (for the side windows) and some air directed
to the windshield.
li;' (Bi-Level): This mode directs approximately half of
the air to the instrument panel outlets, and then
directs most
of the remaining air to the floor outlets.
There is also a small amount of air directed to the
windshield and outboard outlets (for the side windows).
This mode directs cooler air to the upper outlets and
warmer air to the floor outlets.
f;' (Vent): This mode directs air io th2 imtr~ment
panel outlets.
(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
to help heat or cool the air inside your vehicle more
quickly. Press
this button to turn tne recircuia'rion 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.
3-25

Automatic Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Automatic Operation
AUTO (Automatic): Press the AUTO button for
automatic control of the inside temperature, the air
delivery mode and the fan speed.
1. Press the AUTO button. Whenever this button is
pressed, the display will show the current settings
for five seconds before returning the display to
the exterior temperature.
2. Adjust the temperature to 75” F (24” C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool any
faster.
If you set the system at the warmest
temperature setting, the system will remain at the
maximum heat setting and fan speed.
In cold weather, the system will start at reduced fan
speeds to avoid blowing cold air into your vehicle
until warmer air is available. The system will
start out blowing air at the floor but may change
modes automatically as the vehicle warms up
to maintain the chosen temperature setting. The
length of time needed for warm up will depend on
the outside temperature and the length of time
that has elapsed since your vehicle was last driven.
3. Wait for the system to regulate. This may take from
10 to 30 minutes. Then adjust the temperature, if
necessary.
Do not cover the solar sensor located in the center OT
the instrument panel, near the windshield. For more
information on the solar sensor, see “Sensors” later in
this section.
3-28

If you are in city traffic, and your vehicle is stopped and
idling, or the weather is hot, the system may switch
from the outside air mode to the recirculation mode.
To prevent the air inside of your vehicle from becoming
too stale, be sure to return to the outside air mode
periodically.
& 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 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.
3-30

Hill and Mountain Roads
-
If you drive regularly in steep country, or if you’re
planning to visit there, here are some tips that can make
your trips safer and more enjoyable.
0 Keep your vehicle in good shape. Check all fluid
levels and also the brakes, tires, cooling system
and transaxle. These parts can work hard on
mountain roads.
Know how to go down hills. The most important
thing to know is this: let your engine do some of
the slowing down. Shift to a lower gear when you go
down a steep or long hill.
Driving on steep hills or mountains is different from
driving
in flat or rolling terrain.
If you don’t shift down, your brakes could get
so hot that they wouldn’t work well. You would
then have poor braking or even none going down
a hill. You could crash. Shift down to let
your engine assist your brakes on a steep downhill slope.
4-24

Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See the Maintenance Schedule for more
on this. Things that are especially important in trailer
operation are automatic transaxle fluid (don’t overfill),
engine oil, drive belt, cooling system and brake system.
Each of these is covered in this manual, and the
Index will help you find them quickly.
If you’re trailering,
it’s a good idea to review this information before you
start your trip.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat during
severe operating conditions. See
Engine Overheating on
page 5-29.
Check periodically to see that all hitch nuts and bolts
are tight.
4-42

Section 5 Service and Appearance Care
Service ........................................................ 5.3
Doing Your Own Service Work
......................... 5.3
Adding Equipment to the Outside
of Your
Vehicle
...................................................... 5.4
Fuel ................................................................ 5.5
Gasoline Octane
............................................ 5.5
Gasoline Specifications
.................................... 5.6
California Fuel
............................................... 5.6
Additives
....................................................... 5.6
Fuels in Foreign Countries
............................ 5.7
Filling Your Tank
........................... .......... 5.8
Filling
a Portable Fuel Container ..... .... 5.11
the Hood ............................. .... 5.12
Hood Release
.............................. ........ 5.13
Engine Compartment Overview ...................... -5-1 4
Checking Things Under
Engine Oil ................................................... 5.15
Supercharger Oil .......................................... 5.21
Engine Air Cleaner/t-llter
................................ 5-22
Automatic Transaxle Fluid .............................. 5.23
Engine Coolant
............................................. 5.26
Radiator Pressure Cap
.................................. 5.29
Engine Overheating
....................................... 5.29
Cooling System
............................................ 5.32
Power Steering Fluid
..................................... 5.40
Windshield Washer Fluid
................................ 5.40
Brakes
........................................................ 5.42
Battery
........................................................ 5-44
Jump Starting
............................................... 5-46
Headlamp Aiming .......................... ...... 5.52
Bulb Replacement .................................. -5-56
Halogen Bulbs
.............................................. 5.56
Headlamps
.................................................. 5.56
Front Turn Signal and Parking Lamps
.............. 5-57
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps
......................................... 5-59
fiepiacement
Euibs 3.w - ^^ .......................................
5- I