ignition PONTIAC GTO 2004 Workshop Manual

If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it is safe to do so, pull off the road,
with the parking brake applied, shift to PARK (P)
or NEUTRAL (N) and let the engine idle while
you get out and check that the cooling fan is
working.
2. If the fan is working and the temperature gauge
needle has not returned to its normal position
within a few minutes, stop the engine and remove
the ignition key.
Look for leaks at the radiator hoses and
connections, heater hoses and connections,
radiator, and water pump. Be careful when checking
these areas as they will probably still be hot. If
you find a major leak or other problems that may
have caused the engine to overheat, do not run the
engine until these problems have been corrected.
If you do not find anything wrong, you should check
the engine coolant level. SeeEngine Coolant on
page 5-25. You should also check the air intake
area below the front bumper to ensure that it is clear
of leaves and road grime.3. Turn off your air conditioning and turn on your
heater to full hot at the highest fan speed and
open the window as necessary.
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning doesn’t come back on, you can drive
normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there’s still no sign of steam, you can idle the engine
for three minutes while you’re parked. If you still
have the warning,turn off the engine and get everyone
out of the vehicleuntil it cools down.
You may decide not to lift the hood but to get service
help right away.
5-30

Notice:If you leave your radio or other accessories
on during the jump starting procedure, they could
be damaged. The repairs would not be covered
by your warranty. Always turn off your radio and
other accessories when jump starting your vehicle.
3. Turn off the ignition on both vehicles. Unplug
unnecessary accessories plugged into the cigarette
lighter. Turn off the radio and all lamps that aren’t
needed. This will avoid sparks and help save
both batteries. And it could save your radio!
4. Open the hoods and locate the batteries. Find the
positive (+) and negative (−) terminal locations on
each vehicle. SeeEngine Compartment Overview
on page 5-12for more information on location.
{CAUTION:
An electric fan can start up even when the
engine is not running and can injure you. Keep
hands, clothing and tools away from any
underhood electric fan.
{CAUTION:
Using a match near a battery can cause battery
gas to explode. People have been hurt doing
this, and some have been blinded. Use a
ashlight if you need more light.
Be sure the battery has enough water. You do
not need to add water to the battery installed
in your new vehicle. But if a battery has ller
caps, be sure the right amount of uid is there.
If it is low, add water to take care of that rst.
If you don’t, explosive gas could be present.
Battery uid contains acid that can burn you.
Do not get it on you. If you accidentally get it
in your eyes or on your skin, ush the place
with water and get medical help immediately.
5-43

Instrument Panel Fuse Block
This fuse block is located under the driver’s side of the
instrument panel. The fuses here protect each
separate circuit including headlamps. There are spare
fuses inside the fuse box. If you have electrical
failure, check here first.
Fuses Usage
FLASHER
UNITHazard Warning Flashers
POWER
WINDOWSPower Window Switches
POWER
SEATSPower Seat Controls
SPARE Spare
INSTRUMENT
ILLUM. PARK
LAMPSInstrument Cluster Brightness
Controls, Parking Lamps
STOP LAMPS Stop Lamps
INTERIOR
ILLUM.Interior light Controls
HAZARD
WARNINGHazard Warning Flashers
SPARE Spare
HORN Horn
IGNITION Ignition Switch
INSTRUMENT
ILLUM.Instrument Panel Lighting
TURN SIGNAL Turn Signal Lamp
5-88

Fuses Usage
ACC HTR
CONT INST.
TRIP COMPHeater Controls, Trip Computer
CIGAR
LIGHTERCigarette Lighter
CRUISE CONT.
PWR STEER,
MIRRORSCruise Control System, Power
Steering, Power Mirrors
RADIO,
CELLPHONERadio System, Cellphone
ACC SOCKET Accessory Power Outlet
FRONT WIPER Front Windshield Wipers
SPARE Spare
PWR DOOR
LOCKS, ANT.
& WINDOWSPower Door Locks, Antenna, Power
Windows
INSTRUMENTS
THEFT HORNTheft System, Horn
HEATED REAR
WINDOWRear Window Defogger
RADIO Radio SystemFuses Usage
SUB WOOFER
& AMPLIFIERSub Woofer and Amplifier
SPARE Spare
AIRBAG Airbag
ABS Anti-Lock Brake System
SPARE Spare
SPARE Spare
SPARE Spare
Relays Usage
ACC RELAY Accessory Power Outlet
IGNITION
RELAYIgnition Switch
POWER
WINDOW
RELAYPower Windows
BLOWER
INHIBIT RELAYBlower
PARK LAMPS
RELAYParking Lamps
INTERIOR
ILLUM RELAYInterior Light Controls
5-89

Engine Compartment Fuse Block
The engine compartment fuse block is located in the
engine compartment and protects all electrical
loads. SeeEngine Compartment Overview on page 5-12
for more information on location.
For access to the main fuses, pull off the cover.
Fuses Usage
INJ/IGN Fuel Injectors and Ignition Modules
INJ/IGN Fuel Injectors and Ignition Modules
ENG
SENSORSEngine Sensors
AUTO TRANS Automatic Transmission
LH HEADLAMP Left Headlamp
RH
HEADLAMPRight Headlamp
ENG. CONT.
BCMEngine and BCM
FUEL PUMP Fuel Pump
SPARE Spare
RAD FAN 1 F/L Engine Cooling Small Fan
BLOWER F/L Blower Fan
MAIN F/L Main
ENGINE F/L Engine
ABS F/L Anti Lock Brakes
LIGHTING F/L Lighting
RAD FAN 2 F/L Engine Cooling Large Fan
REAR
WINDOWHeated Rear Window
SPARE Spare
SPARE Spare
T-RELAX Throttle Relaxer Module
5-90

Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-23if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the ON position,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), contact your GM
Goodwrench dealer for service.
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
•With an automatic transmission, the key should turn
to LOCK only when the shift lever is in PARK (P).
The key should come out only in LOCK.
•With a manual transmission, the key should turn to
LOCK only when the shift lever is in reverse. The
key should come out only in LOCK.
Contact your GM Goodwrench dealer if service is
required.
6-11

How to Check Power Steering Fluid..................5-36
How to Detect a Tamper Condition....................2-15
How to Inspect the Engine Air Cleaner/Filter.......5-18
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
Hydraulic Clutch.............................................5-24
Hydroplaning..................................................4-18
I
If No Steam Is Coming From Your Engine..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light is Flashing.....................................3-30
If the Light Is On Steady.................................3-30
If You Are Caught in a Blizzard.........................4-26
If You Are Stuck in Sand, Mud, Ice or Snow.......4-28
IGNITION OFF COURTESY LAMP....................2-36
Ignition Positions.............................................2-16
Immobilizer....................................................2-12
Immobilizer Operation......................................2-13
Infants and Young Children, Restraints...............1-28
Inflation - Tire Pressure...................................5-58
INST FUEL....................................................3-38
Instrument Panel
Cluster.......................................................3-24
Overview..................................................... 3-2Instrument Panel Brightness.............................3-15
Instrument Panel Fuse Block............................5-88
Interior Lamps................................................3-15
J
Jump Starting.................................................5-42
K
Key Removal.................................................2-26
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-15
Lap-Shoulder Belt...................................1-12, 1-21
LATCH System
Child Restraints...........................................1-38
Securing a Child Restraint Designed for the
LATCH System........................................1-40
Latches, Seatback............................................ 1-4
7