2003 Oldsmobile Bravada Owner's Manuals

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

Engine Compartment Fuse Block The fuse block is located under the hood in the engine
compartment on the driver’s side of the vehicle. See
Engine Compartment Overview on page 5-72 for more
information on location.
Remove the primary cover by pressing the
two locking
tabs. Remove the secondary cover by snapping
off
while lifting.
5-87

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Fuses
10
11 12
13 14
15 16
17
18
19
20
21 22
23
24
25
26
27
28
29
30
31
Usage
Powertrain Control Module B
Fog Lamps
Stop Lamp
Cigarette Lighter
Ignition Coils
Air Suspension Ride
TBD-Ignition
1
Crank
Air Bag
Electric Brake
Cooling Fan
Horn Ignition
E
Electronic Throttle Control
Instrument Panel Cluster, Driver
Information Center
Automatic Shift Lock Control System
Engine 1
Back-up Powertrain Control Module 1
Oxygen Sensor
Air Conditioning
Truck Body Controller
Fuses
32
33
34
35
36
50
51
52
Relays
37
38
39
40
41
42
43
44
45
46 47
Usage
Trailer
Anti-Lock Brakes (ABS) Ignition A
Blower Motor Ignition B Passenger’s Side Trailer Turn
Driver’s Side Trailer Turn
Hazard Flashers
Usage
Blank Rear Window Washer
Fog Lamps
Horn Fuel Pump
Windshield WipersNasher
High-Beam Headlamp
Air Conditioning
Cooling Fan
Headlamp Driver Module
Starter
Miscellaneous Usage
48 Instrument Panel Battery
49 Fuse Puller
5-89

Rear Underseat Fuse Block
The rear underseat fuse block is located under the rear
seat on the driver's side
of the vehicle.
7 OH BAll CONSTAR3
PARK LP
0
5-90

Fuses
01 02
03
04
05
06
07
08 09
10
11
12
13
14
15
16
Usage
Right Door Control Module
Left Door Control Module
Liftgate Module 2
Truck Body Controller 3
Rear Fog Lamps
Liftgate Module/Driver Seat Module
Truck Body Controller 2
Power Seats
Blank
Driver Door Module
Amplifier
Passenger Door Module
Rear Climate Controls
Left Rear Parking Lamps
Auxiliary Power
2
Vehicle Center High-Mounted Stop
Lamp
Fuses
17
18
19
20 21 23
24 25
26 27
29
30
31
32
33 34
Usage
Right Rear Parking Lamps
LOCKS
Blank
Sunroof LOCK
Blank
UNLOCK
Blank Blank
OH Battery/OnStar@ System
RainsenseTM Wipers
Parking Lamps
Truck Body Controller 4 Cruise
Control
Truck Body Controller
5
Front Wipers
Vehicle STOP
5-9 1

Fuses
35
36
37
38
39
40
41
42
43
44
Usage
Blank Heat Ventilation Air Conditioning B
Front Parking Lamps
Left Turn Signal Heat Ventilation Air Conditioning
1
Truck Body Controller 4
Radio
Trailer Park
Right Turn Signal
Heat Ventilation Air Conditioning
Fuses
45
46
47
48
49
50
51
52
Usage
Rear Fog Lamps
Auxiliary Power
1
Ignition 0
Four-wheel Drive
Blank
Truck Body Controller Ignition Brakes
Truck Body Controller Run
5-92

Capacities and Specifications
“VORTECTM ” 4200 L6 S M30 0.042 inches
(1.07 mm) 1-5-3-6-2-4
ransmlsslon
Differential
Fluid
Rear 4.0 pints I 1.9 L
5-93