1999 PONTIAC FIREBIRD engine overheat

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The 1999 Pontiac Firebird Owner's Manual
1-1 Seats and Restraint SystemsThis section tells you how to use your seats and safety belts properly. It also explains the ªSRSº system.
2-1 Features and ControlsThis section explains how to start and operate your vehicle.
3-1 Comfort Controls and Audio SystemsThis section tells you how to adjust the ventilation and comfort controls and how to operate your audio system.
4-1 Your Driving and the RoadHere you'll find helpful information and tips about the road and how to drive under different conditions.
5-1 Problems on the RoadThis section tells you what to do if you have a problem while driving, such as a flat tire or overheated engine, etc.
6-1 Service and Appearance CareHere the manual tells you how to keep your vehicle running properly and looking good.
7-1 Maintenance ScheduleThis section tells you when to perform vehicle maintenance and what fluids and lubricants to use.
8-1 Customer Assistance InformationThis section tells you how to contact Pontiac for assistance and how to get service and owner publications.
It also gives you information on ªReporting Safety Defectsº on page 8-12.
9-1 IndexHere's an alphabetical listing of almost every subject in this manual. You can use it to quickly find
something you want to read.

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2-28
Engine Coolant Heater
(Canada Only)
In very cold weather, 0
F (-18
C) or colder, the engine
coolant heater can help. You'll get easier starting and
better fuel economy during engine warm
-up. Usually,
the coolant heater should be plugged in a minimum of
four hours prior to starting your vehicle.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The cord is attached to the outside of the underhood
fuse box.
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.

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2-32
NOTICE:
If your rear wheels can't rotate, don't try to
drive. This might happen if you were stuck in
very deep sand or mud or were up against a solid
object. You could damage your transmission.
Also, if you stop when going uphill, don't hold
your vehicle there with only the accelerator
pedal. This could overheat and damage the
transmission. Use your brakes or shift into
PARK (P) to hold your vehicle in position
on a hill.
Maximum engine speed is limited to protect driveline
components from improper operation.
Manual Transmission Operation
5-Speed
This is your shift pattern.
Here's how to operate
your transmission:
FIRST (1): Press the clutch and shift into FIRST (1).
Then, slowly let up on the clutch pedal as you press the
accelerator pedal.
You can shift into FIRST (1) when you're going less
than 20 mph (32 km/h). If you've come to a complete
stop and it's hard to shift into FIRST (1), put the shift
lever in NEUTRAL (N) and let up on the clutch. Press
the clutch pedal back down. Then shift into FIRST (1).
SECOND (2): Press the clutch pedal to the floor as
you let up on the accelerator pedal and shift into
SECOND (2). Then, slowly let up on the clutch pedal
as you press the accelerator pedal.

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2-37
NOTICE:
Driving with the parking brake on can cause
your parking brakes to overheat. You may have
to replace them, and you could also damage other
parts of your vehicle.
If you are towing a trailer and are parking on any hill,
see ªTowing a Trailerº in the Index. That section shows
what to do first to keep the trailer from moving.
Shifting Into PARK (P)
(Automatic Transmission Only)
CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
If you have left the engine running, the vehicle
can move suddenly. You or others could be
injured. To be sure your vehicle won't move, even
when you're on fairly level ground, use the steps
that follow. If you're pulling a trailer, see
ªTowing a Trailerº in the Index.
1. Hold the brake pedal down with your right foot and
set the parking brake.

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2. Move the shift lever into PARK (P) by holding in the
button on the lever and pushing the lever all the way
toward the front of your vehicle.
3. Turn the ignition key to LOCK.
4. Remove the key and take it with you. If you can
leave the vehicle with the ignition key in your hand,
your vehicle is in PARK (P).
Leaving Your Vehicle With the Engine
Running (Automatic Transmission Only)
CAUTION:
It can be dangerous to leave your vehicle with
the engine running. Your vehicle could move
suddenly if the shift lever is not fully in PARK (P)
with the parking brake firmly set. And, if you
leave the vehicle with the engine running, it could
overheat and even catch fire. You or others could
be injured. Don't leave your vehicle with the
engine running unless you have to.

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2-82 Low Traction Light
When your anti-lock system
is adjusting brake pressure
to help avoid a braking skid,
this light will come on.
If you have the traction control system, this light will also
come on when the system is limiting wheel spin. You
may feel or hear the system working, but this is normal.
Slippery road conditions may exist if the low traction
light comes on, so adjust your driving accordingly. The
light will stay on for a few seconds after the traction
control system stops limiting wheel spin.
The low traction light also comes on briefly when you turn
the ignition key to RUN. If the light doesn't come on
then, have it fixed so it will be there to tell you when the
anti
-lock brake system or traction control system is active.
Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature. If the
gage pointer moves into
the red area, your engine
is approaching an
overheating condition.
If you have been operating your vehicle under normal
driving conditions, you should pull off the road, stop
your vehicle and turn off the engine as soon as possible.
See ªEngine Overheatingº in the Index.

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2-83 Low Coolant Light (5.7L V8 Engine)
This warning light should
come on briefly while you
are starting your engine.
If the light doesn't come
on, have it repaired.
Your vehicle is equipped with a low coolant indicator
that is designed to detect when the coolant level drops
below a set limit. If the coolant level sensor (on the
radiator) detects that the level drops while the engine is
running, the low coolant indicator will light and remain
lit until the ignition is turned to OFF. Check coolant
level and add coolant as needed. The low coolant light
might stay on after filling the radiator. Turn the ignition
to OFF, then restart the engine to verify that the low
coolant light goes out. See ªEngine Coolantº in
the Index.NOTICE:
Driving with the low coolant light on could cause
your vehicle to overheat. See ªEngine Overheatingº
in the Index. Your vehicle could be damaged and
it wouldn't be covered by your warranty.
Malfunction Indicator Lamp
(Service Engine Soon Light)
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.

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4-38 Making Turns
NOTICE:
Making very sharp turns while trailering could
cause the trailer to come in contact with the
vehicle. Your vehicle could be damaged. Avoid
making very sharp turns while trailering.
When you're turning with a trailer, make wider turns than
normal. Do this so your trailer won't strike soft shoulders,
curbs, road signs, trees or other objects. Avoid jerky or
sudden maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal flasher and/or extra wiring. Check
with your dealer. The arrows on your instrument panel
will flash whenever you signal a turn or lane change.
Properly hooked up, the trailer lamps will also flash,
telling other drivers you're about to turn, change lanes
or stop.When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It's
important to check occasionally to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your
speed to around 45 mph (70 km/h) to reduce the
possibility of engine and transmission overheating.
If you are towing a trailer and you have an automatic
transmission with overdrive, you may prefer to drive in
THIRD (3) instead of AUTOMATIC OVERDRIVE (D)
(or, as you need to, a lower gear). Or, if you have a
manual transmission with FIFTH (5) (or SIXTH (6))
gear and you are towing a trailer, it's better not to use
FIFTH (5) (or SIXTH (6) ) gear. Just drive in
FOURTH (4) (drive in FIFTH (5) if you have a
six
-speed manual transmission) or, as you need to, a
lower gear.