1998 PONTIAC GRAND AM overheating

Enhanced Traction System Active Light
When your Enhanced Traction System is limiting wheel spin,
this light will LOW
.TRAC
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
too hot!
red area, your engine
is
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.
2-61

Low Coolant Warning Light
If this light comes on and
stays on, the vehicle should
be promptly pulled
off the
road and the coolant level checked. See “Engine
Coolant”
in the Index.
Malfunction Indicator Lamp
(Check Engine Light)
CHECK
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
If there are visible signs of steam see “Engine
Overheating’’
in the Index before opening the hood.
Have your vehicle serviced as soon
as you can.
This system is called OBD 11 (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the life
of the vehicle, helping to produce a cleaner
environment. The
CHECK ENGINE light comes on to
indicate that there is a problem
and service is required.
Malfunctions often will be indicated by the system
before any problem
is apparent. This may prevent more
serious damage to
your vehicle. This system is also
designed to assist your service technician
in correctly
diagnosing
any malfunction.
2-62

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, use the highest gear possible.
If you cannot maintain posted speeds, driving at a
lower speed may help avoid overheating your engine
and transaxle.
Parking on Hills
You really should not park your vehicle, with a trailer
attached, on a hill. If something goes wrong, your rig
could start to move. People can be injured, and both
your vehicle and the trailer can be damaged.
But if you ever have to park your rig on a hill, here’s
how to do it:
1. Apply your regular brakes, but don’t shift into
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply your parking
brake, and then shift to PARK (P),
or REVERSE (R)
for a manual transaxle.
5. Release the regular brakes.
PARK
(P) yet, or into
a gear for a manual transaxle.
4-41

When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
0 Start your engine;
0 Shift into a gear; and
0 Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See the Maintenance Schedule
for more
on this. Things that are especially important in trailer
operation are automatic transaxle fluid (don’t overfill),
engine oil, belt, cooling system and brake adjustment.
Each
of these is covered in this manual, and the Index
will help you find them quickly. If you’re trailering, it’s
a good idea to review these sections before you
start
your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When mailer Towing
Your cooling system may temporarily overheat during
severe operating conditions.
See “Engine Overheating’’
in the Index.
Towing A Trailer
(Except
3100 V6 Engine)
Your vehicle is neither designed nor intended to tow
a trailer.
4-42

Section 5 Problems on the Road
Here you’ll find what to do about some problems that can occur on the road.
5-2
5-2
5-3
5-8
5-14 Hazard Warning Flashers
Other Warning Devices
Jump Starting Towing Your Vehicle
Engine Overheating 5-23 If a Tire Goes Flat
5-23 Changing a Flat Tire
5-33 Compact Spare Tire
5-34 If You’re Stuck: In Sand, Mud,
Ice or Snow
5-1

Engine Overheating
You will find a coolant temperature gage and a low
cooIant warning light
on your vehicle’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:
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.
I NOTICE: I
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.
5-14

LA CAUTION: I
-1 -
Heater and radiator hoses, and other engine
parts, can be very hot. Don’t touch them.
If you
do, you can be burned.
Don’t run the engine
if there is a leak. If you run
the
engine, it could lose all coolant. That could
cause an engine
fire, and you could be burned.
Get
any leak fixed before you drive the vehicle.
NOTICE:
Engine damage from running your engine
without coolant isn’t covered
by your warranty.
If there seems to be no leak, with the engine on, check to
see if the electric engine cooling fan is running. If the
engine is overheating, the fan should be running. If it
isn’t, your vehicle needs service.
How to Add Coolant to the Coolant
Surge Tank
If you haven’t found a problem yet, but the coolant level
isn’t at or above FULL COLD, add a 50/50 mixture of
clean water (preferably distilled) and DEX-COOL@
coolant at the coolant surge tank, but be sure the cooling
system, including the coolant surge
tank pressure cap, is
cool before you do it. (See “Engine Coolant” in the
Index for more information.)
’ /$ CAUTION:
-
Steam and scalding liquids from a hot cooling
system
can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge
tank pressure cap -- even a little -- they
can come out
at high speed. Never turn the cap
when the cooling system, including the coolant
surge
tank pressure cap, is hot. Wait for the
cooling system and coolant surge
tank pressure
cap to cool if you ever have to turn the
pressure cap.
5-18

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.
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
DEX-COOL engine coolant. This coolant is designed
to remain in your vehicle for
5 years or 150,000 miles
(240 000 km) whichever occurs first, if you add only
DEX-COOL’ 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.
J
A 50/50 mixture of water and DEX-COOL@
coolant will:
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.
0 Help keep the proper engine temperature.
0 Let the warning lights and gages work as
they should.
6-25