1999 PONTIAC GRAND PRIX oil dipstick

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2-79 Low Oil Level Light
The engine is equipped with
an oil level monitoring
system. When the ignition
key is turned to ON, the
LOW OIL LEVEL light
will briefly flash.
If the light does not flash, have it fixed so it will be
ready to warn you if there's a problem.
If the light stays on, stop the vehicle on a level surface
and turn the engine off. Check the oil level using the
engine oil dipstick. (See ªEngine Oilº in the Index.)
The oil level monitoring system only checks oil level
during the brief period when the ignition key is between
RUN and START. It does not monitor engine oil level
when the engine is running. Additionally, an oil level
check is only performed if the engine has been turned
off for a considerable period of time, allowing the oil
normally in circulation to drain back into the oil pan.
Engine Coolant Temperature Light
This light tells you that the
engine coolant has
overheated or the radiator
cooling fan is not working.
If you have been operating the vehicle under normal
driving conditions, you should pull off the road, stop the
vehicle and turn off the engine as soon as possible.
In ªProblems on the Road,º this manual shows what to
do. See ªEngine Overheatingº in the Index.

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6-10
When you open the hood of the 3100 engine, you'll see:
A. Windshield Washer Fluid
B. Battery
C. Radiator Fill Cap
D. Engine Coolant ReservoirE. Power Steering Fluid Reservoir
F. Engine Oil Fill Cap
G. Engine Oil DipstickH. Automatic Transaxle Dipstick
I. Brake Fluid Reservoir
J. Engine Air Cleaner/Filter

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6-11
When you open the hood of the 3800 engine, you'll see:
A. Windshield Washer Fluid
B. Battery
C. Radiator Fill Cap
D. Engine Coolant ReservoirE. Power Steering Fluid Reservoir
(low in engine compartment)
F. Engine Oil Fill Cap
G. Engine Oil DipstickH. Automatic Transaxle Dipstick
I. Brake Fluid Reservoir
J. Engine Air Cleaner/Filter

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6-12
When you open the hood of the 3800 Supercharged engine, you'll see:
A. Windshield Washer Fluid
B. Battery
C. Radiator Fill Cap
D. Engine Coolant ReservoirE. Power Steering Fluid Reservoir
(low in engine compartment)
F. Engine Oil Fill Cap
G. Engine Oil DipstickH. Automatic Transaxle Dipstick
I. Brake Fluid Reservoir
J. Engine Air Cleaner/Filter

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6-14
The engine oil dipstick handle is the yellow loop near
the front of the engine.
3100 Engine 3800 or 3800
Supercharged Engine
Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil dipstick
might not show the actual level.
Checking Engine Oil
Pull out the dipstick and
clean it with a paper towel
or cloth, then push it back in
all the way. Remove it
again, keeping the tip down,
and check the level.
3100 Engine

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6-15
3800 Engine
When to Add Engine Oil
If the oil is at or below the ADD mark, then you'll need
to add at least one quart of oil. But you must use the
right kind. This part explains what kind of oil to use. For
crankcase capacity, see ªCapacities and Specificationsº
in the Index.
NOTICE:
Don't add too much oil. If your engine has so
much oil that the oil level gets above the
cross
-hatched area that shows the proper
operating range, your engine could be damaged.
3100 Engine 3800 or 3800
Supercharged Engine
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you're through.

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6-22
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.
How to Check
Because this operation can be a little difficult, you
may choose to have this done at the dealership
service department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading on
the dipstick.
NOTICE:
Too much or too little fluid can damage your
transaxle. Too much can mean that some of the
fluid could come out and fall on hot engine parts
or exhaust system parts, starting a fire. Be sure to
get an accurate reading if you check your
transaxle fluid.