2003 Oldsmobile Bravada wiring

Liftgate/Liftglass
It can be dangerous to drive with the liftgate or
liftglass open because carbon monoxide (CO)
gas can come into your vehicle. You can’t see
or smell CO.
It can cause unconsciousness
and even death. If you must drive with the
liftgate open or if electrical wiring or other
cable connections must pass through the seal between the body and the liftgate or liftglass:
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 Controls”
in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
See “Engine Exhaust” in the Index.
Liftgate Release
To unlock the liftgate, you may use the power door
locks or the keyless entry system described earlier.
On some vehicies the liftgiass wiii also uniock when the
liftgate is unlocked. Press the pushbutton on the
liftglass to open it.
To open the entire liftgate, lift the handle located in the
center of the liftgate.
If you open the liftgate, the
liftgate module will lock the liftglass after a one to two
second delay.
Emergency Release for Opening
Liftgate
1. Remove the trim plug to expose the access hole in
2. Use a tool to reach through the access hole in the
3. Pry the left release lever up to the unlock position.
4. Reattach the trim plug.
the trim panel.
trim panel.
Pry the right release lever up to unlatch the liftgate.
2-1 3

If a bulb is burned out, replace it to help avoid an
accident. If the arrows don’t go on at all when you signal
a turn, check the fuse. See
Fuses and Circuit Breakers
on page 5-86 and check for burned-out bulbs.
If you have a trailer towing option with added wiring for
the trailer lamps, a different turn signal flasher is
used. With this flasher installed, the signal indicator will
flash even
if a turn signal bulb is burned out. Check
the front and rear turn signal lamps regularly
to make
sure they are working.
Turn Signal On Chime
If your turn signal is left on for more than 3/4 of a mile
(1.2 km), a chime will sound at each flash of the
turn signal.
To turn off the chime, move the turn signal
lever to the off position.
Headlamp High/Low-Beam Changer
To change the headlamps from low to high beam, push
the lever toward the instrument panel. To return
to
low-beam headlamps, pull the multifunction lever toward
you. Then release it.
-1 When the high beams are
on, this indicator light on
the instrument panel
cluster will also be on.
Flash-to-Pass
This feature lets you use your high-beam headlamps to
signal a driver in front of you that you want to pass.
It works even if your headlamps are in the automatic
position.
To use it, pull the turn signal lever toward you, then
release it.
If your headlamps are in the automatic position or on
low beam, your high-beam headlamps will turn on.
They’ll stay on as long as you hold the lever toward you.
The high-beam indicator on the instrument panel
cluster will come on. Release the lever to return
to
normal operation.
3-8

The safety belt light will also come
on and stay on
for several seconds, then it
will flash for several more.
If the driver’s belt is already buckled, neither the chime
nor the light will come on.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. 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 baa
system, see
Air Bag Systems on page 1-46.
This light will come on
when you start your
vehicle, and it will flash 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.
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 inflate in a crash, or they
could even inflate 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 flash for a few
seconds when you turn the ignition key to
RUN. If the
light doesn’t come on then, have it fixed
so it will
be ready to warn you
if there is a problem.
3-3 1

Trailer Wiring Harness
Your vehicle may be equipped with the seven-wire
trailer towing harness. This harness has a seven-pin
universal heavy-duty trailer connector that is attached to
a bracket on the hitch platform.
Yellow: Left Stop/Turn Signal
Dark Green: Right Stopnurn Signal
@ Brown: Running Lamps
White: Ground
Light Green: Back-up Lamps
Red: Battery Feed
Dark Blue: Electric Brakes
If you need to tow a light-duty trailer with a standard
four-way round pin connector, an adapter connector is
available from your dealer.
Your vehicle is also equipped with wiring for an electric
trailer brake controller. These wires are located inside the vehicle on the driver’s side under the
instrument panel. These wires should be connected to
an electric trailer brake controller by your dealer or
a qualified service center.
4-53

Bulb Replacement
For the type of bulbs, see Replacement Bulbs on
page
5-48.
For any bulb changing procedure not listed in this
section, contact your dealer.
Taillamps and Turn Signal Lamps
1. Open the liftgate.
3. Pull the assembly away from the vehicle.
2. Remove
from the the
two screws
lamp assembly.
4. 5.
6.
7.
8.
Unclip the wiring harness (A) and remove the three
socket retaining screws
(B).
Remove the socket by releasing the retaining tabs.
Holding the socket, pull the bulb
to release it
from the socket.
Push the new bulb into the socket until it clicks.
Reinstall the socket and screws.
5-47

9. Reconnect the wiring harness.
10. Reinstall the lamp assembly and tighten the screws.
11. Close the liftgate.
Replacement Bulbs
Exterior Lamp
31 57 Taillamps
Bulb Number
Rear Turn Signal Lamps I 31 57
For any bulb not listed here, contact your dealer.
5-48

Electrical System
Add-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 on page 1-55.
Headlamps
The headlamp wiring is protected by four fuses. An
electrical overload will cause a lamp
to go on and off. If
this happens, have your headlamp wiring checked
right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse.
If the motor overheats due to heavy
snow or ice, the wiper will stop until the motor cools.
If the overload is caused by some electrical problem, be
sure
to get it fixed.
Power Windows and Other Power
Options
Circuit breakers 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 or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. 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.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage.
Just pick some feature of your vehicle
that you can get along without
- like the radio or
cigarette lighter
- and use its fuse, if it is the correct
amperage. Replace it
as soon as you can.
5-86

Tachometer ........... ....
Taillamps Turn Signal Lamps
.........
ThefbDeterrent. Radio ........
Theft-Deterrent Systems ......
Content Theft-Deterrent ...
Passlock@ .....................
Tilt Wheel ..........................
Testing the Alarm ...............
....... .. 3-30
........................... 5-47
........................... 2-17
........................... 3-88
........................... 2-16
........................... 2-16
........................... 2-17
............................. 3-6 ...
Tire Inflation Check ......................................... 6-10
Tires
..................................................... 5-52. 5-82
Buying New Tires
........................................ 5-56
Chains
....................................................... 5-60
Changing a Flat Tire
.................................... 5-62
If a Tire Goes Flat
....................................... 5-61
Inflation
-- Tire Pressure ............................... 5-53
Inspection and Rotation
................................ 5-53
Uniform Tire Quality Grading
......................... 5-57
Wheel Alignment and Tire Balance
................. 5-58
Wheel Replacement
..................................... 5-58
When
It Is Time for New Tires ...................... 5-55
To Use the Engine Coolant Heater .................... 2-21
Top
of the Instrument Panel ............................. 5-79
Top Strap
...................................................... 1-36
Top Strap Anchor Location
............................... 1-37 Torque Lock
................................................... 2-27
Total Weight on Your Vehicle’s Tires
.................. 4-48
Towing Recreational Vehicle
..................................... 4-41
Towing a Trailer
.......................................... 4-45
Your Vehicle
............................................... 4-41
Traction Assist System (TAS)
...................................... 4-9
Trailer Brakes
................................................. 4-49
Trailer Wiring Harness
..................................... 4-53
Transfer Case
................................................ 5-44
Transmission Fluid, Automatic
........................................... 5-20
Transmission Operation, Automatic
.................... 2-22
Transmission, Transaxle, Transfer Case Unit
Repair Manual
............................................ 7-10
Travel Note Recorder
...................................... 2-41
Traveling
to Remote Areas ............................... 4-17
Trip Information
.............................................. 3-44 .
Trip Odometer ................................................ 3-30
TRANS HOT IDLE
ENGINE
............................. 3-54
Transportation Options
...................................... 7-7
Turn and Lane Change Signals
.......................... 3-7
TURN SIGNAL
ON ......................................... 3-53
Turn Signals When Towing a Trailer
.................. 4-51
Turn SignaVMultifunction Lever
........................... 3-7
14