1998 PONTIAC GRAND PRIX Owners Manual

Electrical System
kdd-On Electrical Equipment
NOTICE:
Don’t add anything electrical to your vehicle
unless you check with your dealer
first. Some
electrical equipment can damage your vehicle
and
the damage wouldn’t be covered by your
warranty.
Some add-on electrical equipment
can keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see “Servicing
Your
Air Bag-Equipped Vehicle” in the Index.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected
from short circuits by a combination of fuses, circuit
breakers, and fusible thermal links in the wiring itself.
This greatly reduces the chance of fires caused by
electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one
of the identical size
and rating. Spare fuses are located
in the instrument
panel. See “Underhood Electrical Center” in the Index.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the underhood electrical center. An electrical overload will cause the lamps
to go on and off, or in some cases
to remain off. If
this happens, have your headlamp
system checked right away.
6-62

Windshield Wipers
The windshield wiper motor is protected by a circuit
breaker and a fuse.
If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools.
If
the overload is caused by some electrical problem, have
it fixed.
Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power
windows and other power accessories. When the current
load is too heavy, the circuit breaker opens and closes,
protecting the circuit until the problem is fixed.
Instrument Panel Fuse Block
Some fuses are in a fuse block located inside of the glove
box behind a
small bin, on the right side. To open, pull on
the plastic strap
and pull the cover out. The fuse block is
inside.
On the back edge of this cover is a fuse puller and
a fuse usage chart. To use the fuse puller, place the wide
end
of the fuse puller over the plastic end of the fuse.
Squeeze the ends over the fuse and pull it out.
To reinstall the bin, position the lower end and turn
the top into position. Press on the sides until
it snaps
into place.
6-63

FUSE USAGE CHART I See Underhood Electrical
Center For Spare Fuses I I I I
CIRCUIT BREAKERS
I HEADLAMP I
I I MAUPGM
STR WHL STR WHL
CTRL
I
I I PWR LOCK I I
RAP HAZARD ~
GIG LTR
I/P - IGN
CRUISE
ECM STOP LAMP
INT LAMP
ABS
PWR DROP MALL
WIPER
SUNROOF
CD CHG
AUWCNSL HVAC
HI PWR MIR
R DEFOG
HSEATILUM
RADIO
SIR TURN
BTSl
HVAC CTRL DlCRlVAC
I I I I CANISTER DRL VENT
rinted in USA.
For More Information, See Owner’s Manual 10401979)
Description
Circuit
Breaker
HEADLAMP
Headlamps
SEAT Power Seat, Power Lumbar
PWR WDO Power Windows
Fuse Description
MALL PGM Mall Module -- Program
MALL Mall Module
Fuse
WIPER
STR WHL
STR WHL
CTRL
SUNROOF
RADIO
PWR LOCK
HSEATLUM
R DEFOG
RAP
HAZARD
PWR MIR HVAC
HI
CIG LTR
INT LAMP STOP LAMP
Description
Wipers
Steering Wheel Illumination
Steering Wheel Control
Sunroof
Radio, Antenna
Mall Module
-- Power Locks
Heated Seats, Power Lumbar
Rear Defog
Retained Accessory Power, Mall Module
Hazard Flashers
Power Mirrors
HVAC Blower -- Hi
Cigarette Lighter,
ALDL, Floor
Console Auxiliary Outlet
Mall Module
-- Interior lamps
S toplamp
6-64

AUWCNSL CD CHG
ECM
CRUISE
UP-IGN
SIR
TURN
ABS
BTSI
PWR DROP HVAC CTRL
DIC/HVAC
DRL Auxiliary Power, Overhead Console
CD Changer
Underhood Electrical Center
-- Passenger’s Side
ECM
Cruise Control
ChimeNall Module, Cluster, Trip
Computer, Head-Up Display,
Brake-Transaxle Shift Interlock
Supplemental Inflatable Restraint
Turn Signal
(Air Bag)
Anti-Lock Brakes
PRNDL, Brake-Transaxle Shift Interlock
Power Drop Ignition
Blower Control, HVAC
Rear Defog, HVAC, Driver
Information Center, Daytime
Running Lamps, Heated Seats
Canister
Vent Solenoid
Daytime Running Lamps Some fuses are in a fuse block on the passenger’s side
of
the engine compartment. Pull
off the cover labeled
FUSES
to expose the fuses.
6-65

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

Replacement Bulbs
Exterior Lamps ............... Bulb Number
Back-up ............................... 3 156
Front Parking/Turn Signal
.............. .3357NA
Center High-Mounted Stop
................ 1141
Headlamps HighBeam
........................... 9005
Low Beam ........................... 9006
Front Sidemarker
......................... 194
Rear Sidemarker ......................... 194
Stop/Tail/Turn Signal ..................... 3057
Capacities and Specifications
Please refer to “Recommended Fluids and Lubricants”
in the Index for more information.
Automatic Transaxle with Overdrive
Pan Removal and Replacement ..... 8 quarts (7.5 L)
After Complete Overhaul ......... 10 quarts (9.5 L)
When drainingheplacing converter or auxiliary coolel;
more fluid
my be needed.
Cooling System Including Reservoir
3100 (CodeM) ............... 11 quarts (10.42 L)
3800 (Code K) .............. 12.3 quarts (11.65 L)
3800 Supercharged (Code 1) ... 12.3 quarts (11.65 L)
Refrigerant (R-l34a),
Engine Crankcase (Oil Change with Filter Change)
Air Conditioning*
............ 1.9 lbs. (0.85 kg)
3100 (Code M)
................ 4.5 quarts (4.2 L)
3800 (Code K) ................ 4.5 quarts (4.2 L)
Fuel Tank .................... 18 gallons (68 L)
3800 Supercharged (Code 1) ..... 4.5 quarts (4.2 L)
*See “Air Conditioning Refrigerants ” later in this section.
Note: All capacities are approximate. When adding, be
sure to fill the appropriate level, as recommended
in this
manual. Recheck fluid level after filling.
See “Recommended Fluids and Lubricants” in
the Index
for more information.
6-68

3100 (Code M) Engine Specifications
Type .................................... V6
Displacement
....... . . 191 CID (3.1LL82)
Firing Order
...................... 1-2-3-4-5-6
Thermostat Temperature
........... 195 OF (9 1 O C)
Horsepower
................. ........ 160
3800 (Code K) Engine Specifications
Type .................................... V6
Displacement
............... 231 CID (3.8L L36)
Firing Order
...................... 1-6-5-4-3-2
Thermostat Temperature
........... 195 OF (9 1 O C)
Horsepower ............................. 195
3800 Supercharged (Code 1)
Engine Specifications
Type .................................. V6
Displacement
. . ......... 23 1 CID (3.8L L67)
Firing Order
.................... 1-6-5-4-3-2
Thermostat Temperature
. . ..... 195"F(9l0C)
Horsepower
......... ........... 240
Vehicle Dimensions
Wheelbase .............. 110.5 inches (280.7 cm)
Tread Width
................................
Front .................. 61.7 inches (156.8 cm)
Rear ................... 61.1 inches (155.2 cm)
Overall Length ........... 196.5 inches (499.1 cm)
Overall Height
............ 54.7 inches (1 39 cm)
Overall Width
.... ..... 72.7 inches (1 84.5 cm)