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9. Shut the engine off and replace the pressure cap. Be
sure the arrows on the cap line up like this.
10. Then fill the coolant recovery tank to the proper
level.
For a complete drain, flush and refill, see your Pontiac
dealer or a Pontiac Service Manual. To purchase a
service manual, see “Service Publications” in the Index.
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3.4L L32 (Code S) When you open the hood you'll see:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Battery
Engine Coolant Reservoir
Engine Oil Dipstick
Automatic Transmission Dipstick (if equipped)
Air Cleaner
Oil
Fill Cap
Brake Fluid Reservoir
Power Steering Reservoir
Windshield Washer Reservoir
Engine Fan Clutch Fluid Reservoir (if equipped)
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Page 243 of 386
3.8L L36 (Code K) When you open the hood you'll see:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Battery
Engine Coolant Reservoir Engine Oil Dipstick
Automatic Transmission Dipstick (if equipped)
Air Cleaner Oil
Fill Cap
Brake Fluid Reservoir
Power Steering Reservoir Windshield Washer Reservoir
Engine Fan Clutch Fluid Reservoir
(if equipped)
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Page 244 of 386
5.7L LT1 (Code P) When you open the hood you'll see:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Battery
Engine Coolant Reservoir
Engine Oil Dipstick
Automatic Transmission Dipstick (if equipped)
Air Cleaner
Oil Fill Cap
. ., ' I 7: . $: ,;
Brake Fluid Reservoir ,? : .'y-;
Power Steering Reservoir .X&:
Windshield Washer Reservoir $i.
Engine Fans
Clutch Fluid Reservoir (if equipped)
._ .. '$# .
jp;
d
;j
F , ,i
0 x. : .9' 2'
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Page 251 of 386

Engine Oil Additives
Don’t add anything to your oil. Your Pontiac dealer is
ready to advise if you think something should be added.
When to Change Engine Oil
See if any one of these is true for you:
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
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 comes first.
If none of them is true, change the oil and filter every
7,500 miles (12 500 km) or 12 months -- whichever
comes first.
your car.
Engine Coolant Heater
An engine coolant heater can be a big help if you have
to park outside in very cold weather,
0 OF (- 1 8 O C) or
colder.
If your vehicle has this option, see “Engine
Coolant Heater” in the Index.
What to Do with Used Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer? Don’t let used oil stay on your skin
for very long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly throw
away clothing or rags containing used engine oil. (See
the manufacturer’s warnings about the use and disposal
of oil products.)
Used oil can be a real threat to the environment. If you
change your own oil, be sure to drain all free-flowing oil
from the filter before disposal. Don’t ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle it by taking it to a place that collects used oil.
If
you have a problem properly disposing of your used oil,
ask your dealer, a service station or
a local recycling
center for help.
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Page 263 of 386

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 or if you need to add coolant to your
radiator, see “Engine Overheating” in the Index.
The proper coolant for your Pontiac will:
Give freezing protection down to -34°F (-37 O C).
Give boiling protection up to 262 “F ( 128 ” C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights work as they should.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half antifreeze that meets “GM
Specification
1825-M,” which won’t damage aluminum
parts.
You can also use a recycled coolant conforming to
GM Specification 1825-M with a complete coolant flush
and refill. If you use this mixture, you don’t need to add
anything else.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t be covered by your warranty.
Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
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Adding Coolant 5.7L LTl Engine Only
r ----
If this light comes on, it means you’re low on engine
coolant.
To Check Coolant
When your engine is cold, check the dipstick on the cap
of the coolant recovery tank. The coolant level should
be at
COLD, or a little higher. When your engine is
warm, the level on the dipstick should be up to the HOT,
or a little higher.
To Add Coolant to the Recovery Tank
If you need more coolant, add the proper mix at the
coolant
recovery tank, but only when your engine is
cool. If the tank is very low or empty, also add coolant
to the radiator, see “Engine Overheating” in the Index
for information.
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Page 265 of 386
Radiator Pressure Cap (All Engines)
NOTICE:
Your radiator cap is a 18 psi (124 Ea)
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 overflow tube on the radiator
filler neck.
When you replace your radiator pressure cap, an AC@
cap is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
When you replace your thermostat, an AC@ thermostat
is recommended.
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