1998 PONTIAC GRAND PRIX fuel

Filling a Portable Fuel Container
A CAUTION:
Never fill a portable fuel container while it is in
your vehicle. Static electricity discharge from the
container can ignite the gasoline vapor. You can
be badly burned and your vehicle damaged
if this
occurs.
To help avoid injury to you and others:
Dispense gasoline only into approved
containers.
0 Do not fill a container while it is inside a
vehicle, in a vehicle’s trunk, pickup bed
or
on any surface other than the ground.
0 Bring the fill nozzle in contact with the
1 inside of the fill opening before operating
the nozzle. Contact should be maintained
1 until the filling is complete.
~ 0 Don’t smoke while pumping gasoline.
i
Checking Things Under the Hood
A CAUTION: I
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,
1 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.
6-8

Before closing the hood, be sure all the filler caps are
on properly. Then just pull the hood down and close
it fiiy.
3800 Supercharged Engine
(If Equipped)
Your vehicle may have a 3800 Supercharged engine.
The supercharger is a device which is designed to pump
more air into the engine than it would normally use.
This air, mixed with fuel, creates increased engine
power. Since the supercharger is a pump and is driven
from an engine accessory drive belt, increased pressure
is available at all driving conditions.
The Powertrain Control Module (PCM) works with a
vacuum control to regulate the increased pressure
required during specific driving conditions. When this
increased pressure or boost is not desired, such as during
idling and light throttle cruising, the excess air that the supercharger is pumping is routed through a bypass.
All of these controls working together provide high
performance character and fuel efficiency
in the
3800 Supercharged engine.
Engine Oil
LOW OIL
LEVEL
If the LOW OIL LEVEL
light on the instrument
panel comes on, it means
you need to check
your
engine oil level right away.
For more information, see “Low
Oil Level Light” in the
Index. You should check your engine oil level regularly;
this is an added reminder.
It’s a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick
handle is the yellow loop
near the front of the engine.
6-13

As shown in the chart, if you have the 3100 engine,
SAE 5W-30 is best for your vehicle. However, you
can use
SAE 1OW-30 if it’s going to be 0°F (-18°C) or
above. These numbers on an
oil container show its
viscosity, or thickness.
Do not use other viscosity oils,
such as SAE 20W-50.
I RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
I SAE VlSCOSlTT GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER SYMBOL ---
I
SAE 3w-30 PREFERRED
COLD
WEATHER
DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
3100 Engine
6-17

HOT
WEATHER
ImK
FOR THIS
--
RECOMMENDED SAE VISCOSITY GRADE EWGIWE OILS
FOR BEST FUEL ECONOMY AND COLD STARTINO, SELECT THE LOWEST
SA€ UlSCOSlll 6MDE OIL FOR THE EXPECTLD TEMPERATURE WE.
COLD
WEATHER
il UE I lbw-30
PREFERRED &ow 0°F (-1SoC)
DO NOT USE SAE 20W-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
3800 or 3800 Supercharged Engine
As shown in the chart, if you have the 3800 engine,
SAE 1OW-30 is best for your vehicle. However, you
can use
SAE 5W-30 if it’s going to be colder than
60°F (16°C) before your next oil change. When it’s
very cold, you should use
SAE 5W-30. These numbers
on an oil container show its viscosity, or thickness. Do
not use other viscosity oils, such as SAE 2OW-50.
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
“Starburst”
symbol. Failure to use the
recommended
oil can result in engine damage not
covered
by your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area where the temperature falls
below
-20°F (-29”C), consider using either an
SAE 5W-30 synthetic oil or an SAE OW-30 oil. Both
will provide easier cold starting and better protection
for
your engine at extremely low temperatures.
6-18

CAUTION: (Continued)
Underinflated tires pose the same danger
as overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended pressure. Tire pressure should be checked
when your tires are cold.
cut, punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep
tires at the recommended pressure.
Worn, old tires can cause accidents. If your
tread
is badly worn, or if your tires have
been damaged, replace them.
Overinflated tires are more likely to be
Inflation -- Tire Pressure
The Tire-Loading Information label, which is on the
inside of the
trunk lid, shows the correct inflation
pressures for your tires when they’re cold. “Cold”
means your vehicle has been sitting for at least three
hours or driven no more than 1 mile (1.6 km).
NOTICE:
Don’t let anyone tell you that underinflation or
overinflation
is all right. It’s not. If your tires
don’t have enough air (underinflation), you can
get the following:
0 Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
If your tires have too much air (overinfla
you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards. .tion),
6-45

Underbody Maintenance
Chemicals used for ice and snow removal and dust .
control can collect on the underbody. If these are not
removed, accelerated corrosion (rust)
can occur on
the underbody parts such as fuel lines, frame, floor
pan and exhaust system even though they have
corrosion protection.
At least every spring, flush these materials from the underbody with plain water. Clean any areas where mud
and other debris can collect. Dirt packed in closed areas
of the frame should be loosened before being flushed.
Your dealer or an underbody car washing system can do
this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create
a chemical fallout. Airborne pollutants can fall upon
and attack painted surfaces on your vehicle.
This
damage can take two forms: blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched
into the paint surface.
Although no defect in the paint job causes
this, Pontiac
will repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 OOO km) of purchase,
whichever occurs
first.
6-59

0
BAll MAIN 2
0
IQN MAIN 1
0 BAT MAIN 1
IQN MAIN 2
0
COOL FAN RELAY
SERIES r"- COOL FAN 2
LZJ
FUEL PUMP
(SUPERCHARGER
NEL PUMP SPEED
0
ION MODULE
0
0
ION MAIN
0
0
0
0
0
0
Fuse Description Fuse Description
COOL FAN 2 Cool Fan 2 COOL FAN 1 Cool Fan1
BAm MAIN 2 Battery Main 2 IGN MAIN 2 Ign Main 2
IGNMAIN 1 Ign Main 1 B/U LP Trunk Release,
HEADLAMPS Headlamps BATT MAIN 1 Ban Main 1
Back-up Lamps
6-66

Fuse
TRANSMISSION
mJEL PUMP
AC CLU/ABS IGN
IGN1-UH
IGN MODULE
INJ
ECM
PARK LP
FUTURE
SPARE
SPARE
SPARE
SPARE
FOG LP
mTUm
SPARE
Description
Automatic Transaxle:
Enable, Switch, Shift,
PWM
Fuel Pump
AC Clutch, ABS Ignition
MAF, Heated Sensors,
Canister Prg, Boost Solenoid
Ignition Module
Fuel Injectors
ECM/PCM
ChimeMall Module,
Taillamps, Parklamps,
Sidemarker Lamps,
Dimmable Lamps
Spare Fuse
Spare Fuse
Spare Fuse
Spare Fuse
Spare Fuse
Fog Lamps Spare Fuse
Spare Fuse
Fuse
SPARE
RADIO
HORN
ALT SENSE
Diode
AC DIODE
Relay
RELAY COOL FAN
SERIES
RELAY FUEL PUMP
(ONLY
SUPERCHARGER)
FUEL PUMP SPEED
RELAY COOL FAN
2
RELAY A/C CLUTCH
RELAY COOL FAN
1
IGN MAIN
RELAY HORN
RELAY FOG LP
Description
Spare Fuse
Radio, Keyless Entry,
Theft
Shock Sensor, Trip
Computer, HVAC Module,
ABS Module, Security LED
Horn
Alt Sense
Description
A/C Clu Diode
Description
Cooling Fan
Fuel Pump
Fuel Pump Speed Cont
Cooling Fan
2
A/C Clutch Cooling Fan
1
Ign Main
Horn
Fog Lamp