1999 PONTIAC BONNEVILLE oil temperature

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2-23 To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord. The
electrical cord is located on the passenger's side of
the engine compartment near the battery.
3. Plug it into a normal, grounded 110
-volt AC outlet.
CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into a properly grounded three
-prong
11 0
-volt AC outlet. If the cord won't reach, use a
heavy
-duty three-prong extension cord rated for
at least 15 amps.
4. Before starting the engine, be sure to unplug and
store the cord as it was before to keep it away
from moving engine parts. If you don't, it could
be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact
your dealer in the area where you'll be parking your
vehicle. The dealer can give you the best advice for that
particular area.

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2-73 Oil Pressure Gage
The oil pressure gage shows
the engine oil pressure in
psi (pounds per square inch)
when the engine is running.
Canadian vehicles indicate
pressure in kPa
(kiloPascals).
Oil pressure may vary with engine speed, outside
temperature and oil viscosity, but readings above the red
warning zone indicate the normal operating range.
A reading in the red zone may be caused by a
dangerously low oil level or other problem causing low
oil pressure. On vehicles with the optional DIC, the
CHECK GAGES light will go on and a warning chime
will sound, if you have this option. Driving your vehicle
with low oil pressure can cause extensive
engine damage.CAUTION:
Don't keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have your
vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.

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2-74 Check Oil Level Warning Light
The CHECK OIL LEVEL
light turns on for three
seconds as a bulb check
each time the ignition key is
turned to RUN. If the light
doesn't turn on, have your
vehicle serviced.
If the engine oil is more than one quart (0.95 L) low and
the engine has been shut off for at least eight minutes,
the CHECK OIL LEVEL light will turn on for about
one minute and will then remain off until the next time
you start the vehicle.
If the CHECK OIL LEVEL light turns on, the engine oil
level should be checked at the dipstick then brought up
to the proper level, if necessary. See ªEngine Oilº in
the Index.
Low Washer Fluid Warning Light
This light will come on
when your windshield
washers are working and the
fluid container is less than
one
-third full.
Check Gages Warning Light (Option)
This light will come on
briefly when you are
starting the engine.
If the light comes on and stays on while you are driving,
check your gages for fuel, coolant temperature, oil
pressure or voltage. This light will stay on if your engine
is not running with the ignition on.

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2-77 Boost Gage (Option)
Vehicles equipped with the supercharged engine have
this boost gage that indicates vacuum during light to
moderate throttle and boost under heavier throttle. The
gage displays the air pressure level in psi going into the
engine's combustion chamber.
The gage is automatically centered at zero psi every
time the engine is started. Actual vacuum or boost is
displayed from this zero point. Changes in ambient
pressure, such as driving in mountains and changing
weather, will slightly change the zero reading.
Head-Up Display (Option)
CAUTION:
If the HUD image is too bright, or too high in
your field of view, it may take you more time to
see things you need to see when it's dark outside.
Be sure to keep the HUD image dim and placed
low in your field of view.
If you have the optional Head-Up Display (HUD), you
can see some of the driver information also available on
your instrument panel cluster. The information may be
displayed in English or metric units and appears as a
reflection on the windshield. The HUD shows:

Speedometer reading

Turn signal indicators

High
-beam indicator symbol

CHECK GAGES message (for low oil pressure, high
coolant temperature, low oil level and low fuel)

Low fuel warning symbol

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2-81
FUNCTION MONITOR: This lets you know if
you are low on fluids or have a problem with a
vehicle function:

CHECK OIL LEVEL: This message could mean
your oil level is low. If it comes on for more than
three seconds, see ªCheck Oil Level Warning Lightº
in the Index.

WASHER FLUID: This message means your
washer fluid tank is less than about 30 percent full.
The windshield portion of the vehicle outline will
also glow. If these come on, see ªWindshield Washer
Fluidº in the Index.

LOW COOLANT: This message means your
coolant level has fallen to about half full. If it comes
on, see ªEngine Coolantº in the Index.

CHECK GAGES: If this light comes on and stays
on while you are driving, check your gages for fuel,
coolant temperature, oil pressure or battery voltage.
SECURITY MONITOR: The vehicle outline will
illuminate to let you know the following information:

DOOR AJAR: This message means a door is not
fully closed. The vehicle outline will show you
which door it is.
TRUNK AJAR: This message appears if the trunk is
not fully closed. The vehicle outline will illuminate.

HOOD AJAR: This message appears if the hood is
not fully closed. The vehicle outline will illuminate
if the hood is not latched properly.
LAMP MONITOR: Whenever you try to use one of
the following lamps, the LAMP MONITOR will tell you
if a bulb is out.

Headlamp (Low and High Beam)

Parking Lamp/Sidemarker

Turn Signal/Parking/Stop

Back
-Up Lamp

Taillamp/Turn/Sidemarker/License

Brake Lamp and Center High
-Mounted Stoplamp
If a bulb is out, you will see a message, such as PARK
LAMP, and you will also see where the problem is on
the vehicle outline. The message stays on until the
problem is fixed. See ªReplacement Bulbsº in the Index
for bulb details.

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6-16
As shown in the chart, SAE 10W-30 is best for your
vehicle. However, you can use SAE 5W
-30 if it's going
to be colder than 60F (16C) before your next oil
change. When it's very cold, you should use SAE
5W
-30. These numbers on an oil container show its
viscosity, or thickness. Do not use other viscosity oils,
such as SAE 20W
-50.
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
ªStarburstº symbol. Failure to use the
recommended oil can result in engine damage not
covered by your warranty.
GM Goodwrench oil meets all the requirements for
your vehicle.
If you are in an area where the temperature falls below
-20F (-29C), consider using either an SAE 5W-30
synthetic oil or an SAE 0W
-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. Your dealer is ready to
advise if you think something should be added.
When to Change Engine Oil
If any one of these is true for you, use the short trip/city
maintenance schedule:

Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.

Most trips include extensive idling (such as frequent
driving in stop
-and-go traffic).

Most trips are through dusty areas.

You frequently tow a trailer or use a carrier on top of
your vehicle.

The vehicle is used for delivery service, police, taxi
or other commercial application.
Driving under these conditions causes engine oil to
break down sooner. If any one of these is true for your
vehicle, then you need to change your oil and filter
every 3,000 miles (5 000 km) or 3 months
-- whichever
occurs first.

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6-20 How to Check and Add Oil
Check oil only when the engine is cold. Allow the
engine to cool two to three hours after running.
CAUTION:
If you remove the supercharger oil fill plug while
the engine is hot, pressure may cause hot oil to
blow out of the oil fill hole. You may be burned.
Do not remove the plug until the engine cools.
1. Clean the area around the oil fill plug before
removing it.
2. Remove the oil fill plug using a 3/16 inch
Allen wrench.
3. The oil level is correct when it just reaches the
bottom of the threads of the inspection hole.
4. Replace the oil plug with the O
-ring in place. Torque
to 88 lb
-in (10 N´m).
Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle fluid
level is when the engine oil is changed.
Change both the fluid and filter every 50,000 miles
(83 000 km) if the vehicle is mainly driven under one or
more of these conditions:

In heavy city traffic where the outside temperature
regularly reaches 90F (32C) or higher.

In hilly or mountainous terrain.

When doing frequent trailer towing.

Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these
conditions, change the fluid and filter at
100,000 miles (166 000 km).
See ªScheduled Maintenance Servicesº in the Index.

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6-24
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see ªEngine Overheatingº in
the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights gages lights and gages work
as they should.
NOTICE:
When adding coolant, it is important that you use
only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL is added to the
system, premature engine, heater core or
radiator corrosion may result. In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage caused by the use
of coolant other than DEX
-COOL is not
covered by your new vehicle warranty.