1997 PONTIAC GRAND AM coolant temperature

To Use the Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
3. Plug it into a normal, grounded 110-volt AC outlet.
A 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
110-volt AC outlet.
If the cord won’t reach, use a
heavy-duty three-prong extension cord rated for
at least
15 amps.
4. Before starting the engine, be sure to unplug and store
the cord as it was before to keep it away from moving
engine parts.
If you don’t, it could be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind
of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact your Pontiac dealer in the area where you’ll be parking
your vehicle. The dealer can give you the best advice for
that particular area.
2-20

Enhanced Traction System Active Light
(If Equipped)
LOW
TRAC
When your Enhanced
Traction System is limiting
wheel spin, this light will
come on. Slippery road
conditions may exist if
the Enhanced Traction
System active light
comes on,
so adjust your
driving accordingly.
The light will stay on for a
few seconds after the
Enhanced Traction System stops limiting wheel spin.
The Enhanced Traction System active 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 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 too hot!
A light will come on to the right of the gage when the
gage pointer moves beyond the normal operating zone.
It means that your engine coolant has overheated.
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.
In “Problems on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.
2-63

d HEATER: This setting brings heated air through
the heater ducts, and
some through the windshield
defroster vents.
If you have the optional engine coolant heater (engine
block heater) and use it during cold weather,
0°F
(- 18°C) or lower, your heating system will more quickly
provide heat because the engine coolant is already
warmed. See “Engine Coolant Heater” in the Index.
9 BLEND: This setting divides airflow equally
between the heater ducts and the windshield defroster
vents.
DEFROST This setting directs air through the
windshield defroster vents located on top
of the
instrument panel.
Climate Control System with
Air Conditioning
Fan Knob
The left control knob sets the fan speed. To select the
force of air
you want, turn the knob. The fan is always
running unless the mode control is moved
to OFF.
Temperature Knob
The center control knob regulates the temperature of the
air coming through the system.
3-3

Mode Knob
The right control knob changes the functions of your
system.
MAX: Use for maximum cooling. This setting
recirculates much of the air inside your vehicle. It
maximizes your air conditioner’s performance and your
vehicle’s fuel economy.
A/C: Use for normal cooling on hot days. This setting
cools outside air and directs it through the instrument
panel outlets.
9 BI-LEVEL: Use on cool, but sunny days. This
setting brings in the outside air, but directs it in two
ways. Cooler air is directed to the upper portion
of your
body through the instrument panel outlets, but slightly
warmer air is directed through the heater ducts and
defroster vents. At times, this temperature difference
may be more apparent than others.
2 VENT Use when outside temperatures are mild,
and little heating or cooling is needed. Airflow is
through the instrument panel outlets. Set the center
control knob to the temperature desired.
‘!A HEATER: This setting brings heated air through
the heater ducts, and some through the windshield
defroster vents.
If you have the optional engine coolant heater (engine
block heater) and use it during cold weather,
0°F
(- 18 O C) or lower, your heating system will more quickly
provide heat because the engine coolant is already
warmed. See “Engine Coolant Heater” in the Index.
9 BLEND: This setting divides airflow equally
between the heater ducts and the windshield defroster
vents.
DEFROST This setting directs air through the
windshield defroster vents located on top of the
instrument panel.
3-4

Air Conditioning Heating
Turning
the right control knob to HEATER and the
center control knob clockwise sends some heated air
through the heater ducts toward your feet, and some
through the defroster vents.
On very
hot days, open the windows long enough to let
hot, inside air escape. This reduces the time
it takes for
your vehicle to cool down, which should help fuel
economy.
For quick cool-down on very hot days, use MAX with
the temperature knob all the way in the blue area.
If the
setting is used for long periods of time, the air in your
vehicle may become too dry.
For normal cooling on hot days, use
NC with the
temperature knob in the blue area. The system will bring
in outside air and cool it.
On cool but sunny days, the sun may warm your upper
body, but your lower body may not be warm enough. You
can use
BI-LEVEL with the temperature knob in the
middle. The system will bring in outside air and direct
it
to your upper body, while sending slightly warmed air to
your lower body. You may notice this temperature
difference more at some times than at others. VENT
and HEATER are economical positions because
the air conditioner compressor doesn’t run in these
two settings. This reduces engine load, resulting in
improved fuel economy.
If either setting fails to keep
you comfortable, or causes your windows to fog up, turn
the right control knob to one of the air conditioning
positions, or to DEFROST.
If you have the optional engine coolant heater
(engine block heater) and use
it during cold weather,
0 “F (- 18 O C) or lower, your heating system will more
quickly provide heat because the engine coolant is
already warmed. See “Engine Coolant Heater” in
the Index.
3-5

Engine Overheating
You will find a coolant temperature gage and a low
coolant warning light on your Pontiac’s instrument
panel. See “Engine Coolant Temperature Gage”
and
“Low Coolant Warning Light” in the Index.
If Steam Is Coming From Your Engine
A CAUTION:
I
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 fire.
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 fire because you keep
driving with no coolant, your vehicle can be
badly damaged. The costly repairs would not be covered
by your warranty.

When to Check and What to Use
Refer to the Maintenance Schedule to determine how
often you should check the
fluid level in your clutch
master cylinder reservoir
and for the proper fluid. See
“Owner Checks and
Services” and
“Recommended Fluids and
Lubricants” in the Index.
., , I . ...
How to Check
The proper fluid should be added if the level is at or
below the STEP mark on the reservoir cap. See the
instructions on the reservoir cap.
Engine Coolant
The cooling s stem in your vehicle is filled with new
DEX-COOL
J engine coolant. This coolant is designed
to remain in your vehicle for
5 years or 150,000 miles
(240
000 krn) whichever occurs first, if you add only
DEX-COOLd extended life 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” in
the Index.
A 50/50 mixture of water and the proper coolant for
your Pontiac will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 OF (1 29 O C).
0 Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
6-24

Surge Tank Pressure Cap
NOTICE:
Your pressure cap is an 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating.
When you replace your surge tank pressure cap, a GM
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.
Power Steering Fluid
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system
or
you hear an unusual noise. A fluid loss in this system
could indicate
a problem. Have the system inspected
and repaired.