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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 Firebird Service Manual. To
purchase a service manual, see “Service and Owner
Publications”
in the Index.
5-26
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Be careful not to spill gasoline. Clean gasoline from
painted surfaces as soon as possible! See “Cleaning the
Outside
of Your Pontiac” in the Index.
When
you plat the cap back on, turn it to the right until
you hear at least three clicks. Make sure you fully install
the cap. The diagnostic system can determine if the fuel
cap
has been left of or improperly installed. This would
allow fuel to evaporate into
the atmosphere. See
“Malfunction Indicator
Lamp” in the Index.
NOTICE:
If you need a new cap, be sure to get the right
type. Your dealer can get one for you, If you get
the
wrong type, it may not fit and your fuel tank
and emissions system might
be damaged.
.j
Checking Things Und-- the Hoop
An electric fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing and tools away
from any
underhood electric fan.
Things that burn can get on hot engine
parts and
start a fire. These include liquids like gasoline,
oil,
coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber. You or others
could be burned. Be careful not to drop or spill
things
that will burn onto a hot engine.
6-6 .:
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When you open the hood of the 3800 L36 (Code K) engine you’ll see:
A. Engine Coolant Reservoir
B. Battery
C. Oil Fill Cap
D. Automatic Transmission
Dipstick (if equipped) E. Engine Fan
E Windshield
Washer Reservoir
G. Power Steering Reservoir
H. Engine Oil Dipstick
I. Brake Fluid Reservoir
J. Clutch Fluid Reservoir
K. Air Cleaner
(if equipped)
6-8
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When you open the hood of the 5.7L LT1 (Code P) -giro you’ll see:
d
A. Engine Coolant Reservoir
B. Power Steering Reservoir
C. Engine Oil Dipstick
D. Battery
E. Engine Oil Fill Cap
E Fan
G. Windshield Washer Reservoir
H. Automatic Transmission
Dipstick (if equipped)
I. Brake Fluid Reservoir
J. Clutch Fluid Reservoir
(if equipped)
K. Air Cleaner
6-9
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Page 267 of 386

Rear Axle
When to Check and Change Lubricant
Refer to the Maintenance’ Schedule to determine how
often to check the lubricant and when to change it. See
“Periodic Maintenance Inspections” in the Index.
How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you’ll need to add some lubricant.. Add enough lubricant
to raise the level to the bottom of the filler plug hole.
What to Use
Standard Differential
Use Axle Lubricant (GM Part No. 12345977) or
SAE 8OW-90 GL-5 gear lubricant. -
Limited-Slip Differential
To add lubricant when the level is low, use Axle
Lubricant
(GM Part No. 12345977). To completely refill
after draining, add
2 ounces (59 ml) of Limited-Slip
Differential Lubricant Additive
(GM Part No. 1052358).
Then fill to the bottom of the filler plug hole with Axle
Lubricant (GM,Part No. 12345977).
/
Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL TM (orange-colored, silicate-free) engine
coolant. This coolant is designed to remain in your
vehicle
for 5 years or 100,000 miles (166 000 km),
whichever occurs first.
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.
A 50/50 mixture of water and the proper coolant for
your Pontiac will:
0
0
0
a
a
Give freezing protection down to -34 OF (-3 7 O C).
Give boiling protection up to 265 OF ( 129°C).
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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NOTICE:
When adding coolant it is important that you use
DEX-COOL (orange-colored, silicate-free) coolant meeting
GM Specification 6277111.
If silicated coolant 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.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL (orange-colored,
silicate-free) antifreeze that meets
GM Specification
6277M, which won’t damage aluminum parts. Use GM
Engine Coolant Supplement (sealer) (GM Part
No. 3634621) with any complete coolant change. If you
use this mixture,
you don’t need to add anything else.
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant
mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and you
or
others could be burned. Use a 50/50 mix of clean
water and DEX-COOL
TM (orange-colored,
silicate-free) antifreeze.
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Page 269 of 386
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cos’t 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.
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
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 HOT, or
a little higher.
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LOW
COOLANT
If this light comes on,
it means you’re low on
engine coolant.
.. 5.7L LT1 Engine
Adding Coolant to the Recovery Tank
j,
If you need more coolant, add the proper mix at the
emban& 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.
LAUTION:
”urning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn
you badly-
Never turn the pressure cap -- even a
little -- when the engine and radiator are hot.
Add coolant mix at the recovery tank, but be careful not
to spill it.
I
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.
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