Page 233 of 370

Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle ¯uid
level is when the engine oil is changed.
Check the ¯uid in the transaxle and differential every
30,000 miles (50 000 km). Change the ¯uid every
60,000 miles (100 000 km) if the vehicle is mainly driven
under one or more of these conditions:
·In heavy city traffic where the outside temperature
regularly reaches 90ÉF (32ÉC) or higher.
·In hilly or mountainous terrain.
·When doing frequent trailer towing.
·Uses such as found in taxi, police or delivery
service.
See
Part A: Scheduled Maintenance Services on
page 6-4.
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 ¯uid can damage
your transaxle. Too much can mean that some of the
¯uid could come out and fall on hot engine or
exhaust system parts, starting a ®re. Too little ¯uid
could cause the transaxle to overheat. Be sure
to get an accurate reading if you check your
transaxle ¯uid.
Wait at least 30 minutes before checking the transaxle
¯uid level if you have been driving:
·When outside temperatures are above 90ÉF (32ÉC).
·At high speed for quite a while.
·In heavy traffic ± especially in hot weather.
·While pulling a trailer.
To get the right reading, the ¯uid should be at
normal operating temperature, which is 158ÉF to 176ÉF
(70ÉC to 80ÉC).
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above 50ÉF
(10ÉC). If it's colder than 50ÉF (10ÉC), you may have to
drive longer.
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Page 234 of 370

Checking the Fluid Level
Prepare your vehicle as follows:
·Park your vehicle on a level place. Keep the engine
running.
·With the parking brake applied, place the shift lever
in PARK (P).
·With your foot on the brake pedal, move the shift
lever through each gear range, pausing for about
three seconds in each range. Then, position the shift
lever in PARK (P).
·Let the engine run at idle for three to ®ve minutes.
Then, without shutting off the engine, follow these steps:
The automatic transaxle
dipstick has an orange
handle and is located near
the front of the engine
compartment. See
Engine
Compartment Overview
on page 5-12
for more
information on location.1. Release the tab and pull out the dipstick and wipe it
with a clean rag or paper towel.
2. Push it back in all the way, wait three seconds and
then pull it back out again.
3. Check both sides of the dipstick, and read the
lower level. The ¯uid level must be between the
two dimples in the hot range.
4. If the ¯uid level is in the acceptable range, push the
dipstick back in all the way; then press the tab
down to lock the dipstick in place.
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Page 235 of 370

How to Add Fluid
Refer to the Maintenance Schedule to determine
what kind of transaxle ¯uid to use. See
Part D: Recommended Fluids and Lubricants
on page 6-26.
If the ¯uid level is low, add only enough of the proper
¯uid to bring the level into the area between dimples on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough ¯uid at the
dipstick hole to bring it to the proper level.
It doesn't take much ¯uid, generally less than
one pint (0.5 L).
Don't over®ll.
Notice:
We recommend you use only ¯uid labeled
T-IV Automatic Transmission Fluid because ¯uid
with that label is made especially for your automatic
transaxle. Damage caused by ¯uid other than T-IV
Automatic Transmission ¯uid is not covered by your
new vehicle warranty. See ªRecommended Fluids
and Lubricantsº in the Index.
3. After adding ¯uid, recheck the ¯uid level as
described under ªHow to Checkº previously in
this section.
4. When the correct ¯uid level is obtained, push the
dipstick back in all the way; then press the tab
down to lock the dipstick in place.
Manual Transaxle Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. However, the ¯uid in your manual transaxle
doesn't require changing.
How to Check
Because this operation can be difficult, you may choose
to have this done at your Pontiac dealership service
department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading.
Notice:Too much or too little ¯uid can damage
your transaxle. Too much can mean that some of the
¯uid could come out and fall on hot engine or
exhaust system parts, starting a ®re. Too little ¯uid
could cause the transaxle to overheat. Be sure
to get an accurate reading if you check your
transaxle ¯uid.
Check the ¯uid level only when your engine is off, the
vehicle is parked on a level place and the transaxle
is cool enough for you to rest your ®ngers on the
transaxle case.
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Page 237 of 370
When to Check and What to Use
Refer to the Maintenance
Schedule to determine
how often you should
check the ¯uid level in your
master cylinder reservoir
and for the proper
¯uid. See
Part B: Owner
Checks and Services
on page 6-19
andPart D:
Recommended Fluids
and Lubricants on
page 6-26
.
How to Check and Add Fluid
Check to make sure that the ¯uid level is at or above
the MIN mark. If the level is below the MIN mark,
see the instructions on the reservoir cap.
Engine 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
Engine Overheating on
page 5-30.
A 50/50 mixture of clean, drinkable water and the proper
coolant will:
·Give freezing protection down to-34ÉF (-37ÉC).
·Give boiling protection up to 265ÉF (129ÉC).
·Protect against rust and corrosion.
·Help keep the proper engine temperature.
·Let the warning lights and gages work as they
should.
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Page 238 of 370

What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half half coolant that meets GM
Speci®cation 1825-M, which won't damage aluminum
parts. You can also use a recycled coolant conforming to
GM Speci®cation 1825-M with a complete coolant
¯ush and re®ll. If you use this coolant mixture, you don't
need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle's coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you wouldn't get the overheat warning.
Your engine could catch ®re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and the proper coolant.
Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you don't
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
Checking Coolant
The vehicle must be on a
level surface. When your
engine is cold, the
coolant level should be at
LOW, or a little higher.
When your engine is warm,
the level should be up to
FULL, or a little higher.
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Page 239 of 370

Adding Coolant
If you need more coolant, add the proper coolant
mixtureat the coolant recovery tank,but be careful not
to spill it.
{CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will
almost never have to add coolant at the
radiator. Never turn the radiator pressure
cap Ð even a little Ð when the engine and
radiator are hot.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
Occasionally check the coolant level in the radiator. For
information on how to add coolant to the radiator,
see
Cooling System on page 5-32.
Radiator Pressure Cap
Notice:Your radiator cap is a 15.6 psi (110 kPa)
pressure-type cap and must be tightly installed
to prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up with the over¯ow tube on the radiator ®ller.
See
Engine Compartment Overview on page 5-12for more information on location.
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Page 240 of 370
Engine Overheating
You will ®nd a coolant temperature gage on your
vehicle's instrument panel. SeeEngine Coolant
Temperature Gage on page 3-33.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can burn
you badly, even if you just open the hood. Stay
away from the engine if you see or hear steam
coming from it. Just turn it off and get
everyone away from the vehicle until it cools
down. Wait until there is no sign of steam or
coolant before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch ®re. You
or others could be badly burned. Stop your
engine if it overheats, and get out of the
vehicle until the engine is cool.
Notice:If your engine catches ®re because you
keep driving with no coolant, your vehicle can
be badly damaged. The costly repairs would not be
covered by your warranty.
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Page 241 of 370

If No Steam Is Coming From Your
Engine
If you get an engine overheat warning but see or hear
no steam, the problem may not be too serious.
Sometimes the engine can get a little too hot when you:
·Climb a long hill on a hot day.
·Stop after high-speed driving.
·Idle for long periods in traffic.
·Tow a trailer.
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it is safe to do so, pull off the road,
shift to PARK (P) or NEUTRAL (N) and let the
engine idle.
2. Turn on your heater to full hot at the highest fan
speed and open the window as necessary.If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning doesn't come back on, you can drive
normally.
If the warning continues and you have not stopped, pull
over, stop, and park your vehicle right away.
If there's still no sign of steam, you can idle the engine
for three minutes while you're parked. If you still
have the warning,
turn off the engine and get everyone
out of the vehicleuntil it cools down.
You may decide not to lift the hood but to get service
help right away.
5-31