1999 PONTIAC BONNEVILLE climate control

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2-34
Running Your Engine While
You're Parked
It's better not to park with the engine running. But if you
ever have to, here are some things to know.
CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle (see the earlier Caution under
ªEngine Exhaustº).
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan switch is at the highest setting. One place
this can happen is a garage. Exhaust
-- with
CO
-- can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be a blizzard.
(See ªBlizzardº in the Index.)
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you've left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
Follow the proper steps to be sure your vehicle won't
move. See ªShifting Into PARK (P)º in the Index.
If you are parking on a hill and if you're pulling a
trailer, also see ªTowing a Trailerº in the Index.

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2-59
A. Twilight Sentinel/Headlamp Switch
B. Turn Signal/Multifunction Lever
C. Tilt Steering Wheel Lever
D. Instrument Cluster/Gages
E. Audio System Steering Wheel Controls
F. Ignition SwitchG. Air Outlet
H. Climate Control System
I. Glove Box
J. Audio System
K. Hazard Warning Flashers Switch
L. Hood Release

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2-66 Battery Light (If Equipped)
This light will come on
briefly when you start the
vehicle, as a check to show
you it is working; then it
should go out.
If it stays on, or comes on while you are driving, you
may have a problem with the electrical charging system.
It could indicate that you have a generator problem or
another electrical system problem. Have it checked right
away. Driving while this light is on could drain
your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and climate control system.
Some clusters with gages do not have a battery warning
light. They have a CHECK GAGES warning to indicate
a problem.
Voltmeter
You have a voltmeter
unless you have the
supercharged engine.
When the engine is running, the gage shows the
condition of the charging system. Readings outside the
red warning zone indicate the normal operating range.
Readings in the red warning zone indicate a possible
problem in the electrical system. On vehicles with the
optional DIC, the CHECK GAGES light will also come
on, and a warning chime will sound. Have your vehicle
serviced immediately.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-2
Comfort Controls
This section tells you how to make your air system work
for you. Your comfort control system uses
ozone
-friendly R-134a refrigerant.
With these systems, you can control the heating, cooling
and ventilation in your vehicle. Your vehicle also has a
flow
-through ventilation system described later in
this section.
Standard Climate Control System
H±23±4002±S
Fan Knob
The left knob is the fan knob and selects the force of air
you want. Turn the knob clockwise to increase fan speed
and counterclockwise to decrease fan speed. The fan will
always run unless the right control knob is turned to OFF.
The fan must be on to run the air conditioning compressor.
Temperature Knob
The center control regulates the temperature of the air
coming through the system. Turn it toward the blue area
for cooler air. Turn it toward the red area for warmer air.
Mode Knob
The right control has settings for air conditioning and
non
-air conditioning modes. The mode control allows
you to choose the direction of air delivery.
MAX: This setting provides maximum cooling with the
least amount of work. MAX recirculates much of the air
inside your vehicle so it cools quickly. The air is
directed through the instrument panel outlets.

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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3-3
A/C: This setting cools the air entering your vehicle and
directs it through the instrument panel outlets. The
air conditioning compressor operates in all air
conditioner positions.
BI-LEVEL: This setting directs air into your
vehicle in two ways. Cool air is directed to the upper
portion of your body through the middle instrument
panel outlets while warmed air is directed to the floor.
VENT: This setting directs airflow through the
middle instrument panel outlets. The air conditioning
compressor is not working when VENT is selected.
HEATER: This setting directs warmed air
through the floor outlets. Some warm air is diverted to
the windshield to minimize fogging.
DEFOG: This setting directs air to the HEATER
outlets and toward the windshield.
DEFROST: This setting directs most of the air
toward the windshield.
Electronic Climate Control System (Option)
H±23±0005±T
Temperature Button
The TEMP button changes the temperature of the air
coming through the system. Press the up arrow for
warmer air and the down arrow for cooler air.
Fan Button
The button with the fan symbol adjusts the fan speed.
Press the up arrow to increase fan speed and the down
arrow to decrease fan speed.

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6-49
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course.
For example, a tire graded 150 would wear one and a
half (1 1/2) times as well on the government course as a
tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart significantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
-- AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight
-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.Temperature
-- A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance
on the laboratory test wheel than the minimum required
by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.

9-
First Edition for Pontiac Bonneville Owner's Manual ± 1999
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9-1
Section 9 Index
A
ccessory Inflator 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Power Outlet 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustable Support Seat 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag 1-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How Does it Restrain 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . .
How it Works 1-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location 1-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Readiness Light 1-21, 2-65 . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Makes it Inflate 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . .
What Will You See After it Inflates 1-24 . . . . . . . . . . . . . . .
When Should it Inflate 1-23 . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner 6-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants 6-69 . . . . . . . . . . . . . . . . . . . . .
Air Control, Climate Control System 3-2, 3-4 . . . . . . . . . . . . .
Air Inflator System 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm, Universal Theft-Deterrent 2-17 . . . . . . . . . . . . . . . . . .
Alignment and Balance, Tire 6-50 . . . . . . . . . . . . . . . . . . . . . .
Aluminum Wheels, Cleaning 6-57 . . . . . . . . . . . . . . . . . . . . . .
Antenna, Fixed 3-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antenna, Power 3-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antifreeze 6-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock
Brake System Warning Light 2-68, 4-7 . . . . . . . . . . . . . . . .
Brakes 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti
-Lockout Feature 2-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care Materials 6-59 . . . . . . . . . . . . . . . . . . . . . . .
Arbitration Program 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Armrest, Storage 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtrays 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Controls, Steering Wheel Touch Control 3-27 . . . . . . .
Audio Equipment, Adding 3-28 . . . . . . . . . . . . . . . . . . . . . . . .
Audio Systems 3-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Transaxle 2-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check 7-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 2-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overdrive 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Park Mechanism Check 7-35 . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . .
Back-Up Lamp 2-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back-Up Lamp Bulb Replacement 6-39 . . . . . . . . . . . . . . . . .
Battery 6-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement, Remote Keyless Entry 2-13 . . . . . . . . . . . . . .
Warning Light 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

First Edition for Pontiac Bonneville Owner's Manual ± 1999
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9-3
Cleaning
Aluminum or Chrome Wheels 6-57 . . . . . . . . . . . . . . . . . . .
Exterior Lamps/Lenses 6-56 . . . . . . . . . . . . . . . . . . . . . . . .
Fabric 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside of Your Vehicle 6-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Plastic Components 6-52 . . . . . . . . . . . . . . . . . . . . .
Leather 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside of Your Vehicle 6-55 . . . . . . . . . . . . . . . . . . . . . . . .
Special Problems 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vinyl 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheels 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield and Wiper Blades 6-55 . . . . . . . . . . . . . . . . . . .
Climate Control, Standard 3-2 . . . . . . . . . . . . . . . . . . . . . . . . .
Climate Control System 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock, Setting the 3-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Comfort Controls 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Care 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Player 3-19, 3-22 . . . . . . . . . . . . . . . . . . . . . . .
Care 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Errors 3-21, 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Spare Tire 5-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compass, Electronic 2-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Computer Command Ride 2-28 . . . . . . . . . . . . . . . . . . . . . . . .
Console Storage 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control of a Vehicle 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convenience Net 2-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside Mirror 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . . Coolant 6
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater, Engine 2-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Tank 5-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Temperature Gage 2-69 . . . . . . . . . . . . . . . . . . . . . . .
Cooling System 5-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy Transportation 8-10 . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cupholder
Center Console 2
-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customer Assistance for Text Telephone Users 8-5 . . . . . . . . .
Customer Assistance Information 8-1 . . . . . . . . . . . . . . . . . . .
Customer Satisfaction Procedure 8-3 . . . . . . . . . . . . . . . . . . . .
Damage, Finish 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damage, Sheet Metal 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daytime Running Lamps 2-43 . . . . . . . . . . . . . . . . . . . . . . . . .
Dead Battery 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defects, Reporting Safety 8-12 . . . . . . . . . . . . . . . . . . . . . . . .
Defensive Driving 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defogger, Rear Window 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . .
Defogging 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrosting 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Illumination 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Locking 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIC 2-80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions, Vehicle 6-71 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dolby B Noise Reduction 3-14, 3-18 . . . . . . . . . . . . . . . . . . .
Door
Ajar Message 2
-81 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .