2004 PONTIAC BONNEVILLE wiring

Lockout Protection
The power door locks will not work if the key is in the
ignition and any door is open. You can override this
feature by holding the driver’s power door lock switch
for more than three seconds.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from the inside. Then get out and
close the door. You may also use the lock button on the
remote keyless entry transmitter after shutting the doors.
If your vehicle has a theft-deterrent system, see
Universal Theft-Deterrent on page 2-21.
Trunk
{CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle. You can not see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the trunk lid
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See Climate Control
System in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-37.
2-16

Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks
the air bag’s electrical system for malfunctions. The light
tells you if there is an electrical problem. The system
check includes the air bag sensors, the air bag modules,
the wiring and the crash sensing and diagnostic
module. For more information on the air bag system,
seeAir Bag Systems on page 1-51.
This light will come on
when you start your
vehicle, and it will ash for
a few seconds. Then the
light should go out. This
means the system is ready.
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air
bag system may not work properly. Have your vehicle
serviced right away.{CAUTION:
If the air bag readiness light stays on after you
start your vehicle, it means the air bag system
may not be working properly. The air bags in
your vehicle may not inate in a crash, or they
could even inate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the air bag readiness light
stays on after you start your vehicle.
The air bag readiness light should ash for a few
seconds when you turn the ignition key to ON. If the
light doesn’t come on then, have it xed so it will
be ready to warn you if there is a problem.
On vehicles with the DIC, a SERVICE AIR BAG
message will be displayed when there is a problem with
the air bag system. SeeDIC Warnings and Messages
on page 3-61for more information.
3-41

Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inated to the upper limit
for cold tires. You will nd these numbers on the
Tire-Loading Information label. SeeLoading Your
Vehicle on page 4-33. Then be sure you do not go over
the GVW limit for your vehicle, including the weight
of the trailer tongue.
Hitches
It is important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are
a few reasons why you will need the right hitch. Here
are some rules to follow:
The rear bumper on your vehicle is not intended for
hitches. Do not attach rental hitches or other
bumper-type hitches to it. Use only a frame-mounted
hitch that does not attach to the bumper.
Will you have to make any holes in the body of your
vehicle when you install a trailer hitch? If you do, then
be sure to seal the holes later when you remove the
hitch. If you do not seal them, deadly carbon
monoxide (CO) from your exhaust can get into your
vehicle. SeeEngine Exhaust on page 2-37. Dirt and
water can also enter the vehicle.
Safety Chains
You should always attach chains between your vehicle
and your trailer. Cross the safety chains under the tongue
of the trailer so that the tongue will not drop to the road if
it becomes separated from the hitch. Instructions about
safety chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the manufacturer’s
recommendation for attaching safety chains and do not
attach them to the bumper. Always leave just enough
slack so you can turn with your rig. And, never allow
safety chains to drag on the ground.
Trailer Brakes
Does your trailer have its own brakes? Be sure to read
and follow the instructions for the trailer brakes so you will
be able to install, adjust and maintain them properly.
Because you have anti-lock brakes, do not try to tap into
your vehicles brake system. If you do, both brake
systems will not work well, or at all.
Trailer Wiring Harness
All of the electrical circuits required for your trailer
lighting system can be accessed at the driver’s side rear
lamp connector. This connector is located under the
carpet in the rear corner of your trunk compartment.
4-42

Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal asher and/or extra wiring. Check
with your dealer. All of the electrical circuits required for
your trailer lighting system can be accessed at the
left rear lamp connector. This connector is located under
the carpet on the driver’s side in the rear corner of
your trunk compartment. The arrows on your instrument
panel will ash whenever you signal a turn or lane
change. Properly hooked up, the trailer lamps will also
ash, telling other drivers you are about to turn,
change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will ash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It
is important to check occasionally to be sure the trailer
bulbs are still working.
Your vehicle has bulb warning lights. When you plug a
trailer lighting system into your vehicle’s lighting
system, its bulb warning lights may not let you know if
one of your lamps goes out. So, when you have a trailer
lighting system plugged in, be sure to check your
vehicle and trailer lamps from time to time to be sure
they are all working. Once you disconnect the trailer
lamps, the bulb warning lights again can tell you if one
of your vehicle lamps is out.
Driving On Grades
Reduce speed and shift to a lower gearbeforeyou start
down a long or steep downgrade. If you do not 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, shift down to THIRD (3) and
reduce your speed to around 45 mph (70 km/h) to
reduce the possibility of the engine and transaxle
overheating.
Parking on Hills
{CAUTION:
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.
4-44

Appearance Care............................................5-91
Cleaning the Inside of Your Vehicle.................5-91
Care of Safety Belts......................................5-94
Weatherstrips...............................................5-94
Cleaning the Outside of Your Vehicle..............5-94
Sheet Metal Damage.....................................5-96
Finish Damage.............................................5-96
Underbody Maintenance................................5-97
Chemical Paint Spotting.................................5-97
Vehicle Care/Appearance Materials..................5-98
Vehicle Identication......................................5-99
Vehicle Identication Number (VIN).................5-99
Service Parts Identication Label.....................5-99Electrical System..........................................5-100
Add-On Electrical Equipment.........................5-100
Headlamp Wiring........................................5-100
Windshield Wiper Fuses...............................5-100
Power Windows and Other Power Options......5-100
Fuses and Circuit Breakers..........................5-101
Removing the Rear Seat Cushion..................5-104
Capacities and Specications........................5-109
Normal Maintenance Replacement Parts.........5-110
Engine Drive Belt Routing............................5-111
Section 5 Service and Appearance Care
5-2

Front Turn Signal and Parking
Lamps
1. Remove the two bolts.
2. Use a at tool by the outside mount to separate the
lamp assembly from the outboard snap mounting pin.
Slide the headlamp assembly outward and lift it out.3. Disconnect the wiring harness from the headlamp
assembly.
5-54

4. Tip the headlamp assembly and while pressing the
release, turn the bulb and socket counterclockwise
to remove them.
5. Replace the bulb and reinstall the socket. Then
reconnect the wiring harness to the lamp assembly.6. Slide the lamp assembly back into place by lining
up the track on the bottom of the assembly with
the guide on the vehicle. Then connect the outboard
snap and secure the lamp assembly with the
two bolts.
5-55

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. 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 on page 1-60.
Headlamp Wiring
The headlamp wiring is protected by an internal circuit
breaker. 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.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
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 xed.
Power Windows and Other Power
Options
Circuit breakers in the rear fuse block 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 xed
or goes away.
5-100