2003 Oldsmobile Bravada check engine light

Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
Passlock@
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the SECURITY light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set
off the alarm.
When the alarm is set the power door unlock switch
is
not operational.
If the alarm does not sound when it should but the
headlamps flash, check
to see if the horn works. The
horn fuse may be blown. To replace the fuse, see
Fuses
and Circuit Breakers on page
5-86.
If the alarm does not sound or the headlamps do not
flash, the vehicle should be serviced by your dealer. Your
vehicle is equipped with the
Passlock@ theft-deterrent system.
Passiock@
is a passive theit-deterrent system.
Passlock@ enables fuel
if the ignition lock cylinder is
turned with a valid key. If a correct key is not used or the
ignition lock cylinder is tampered with, the fuel system
is disabled and the vehicle will not start.
During normal operation, the SECURITY light will turn
off
approximately five seconds after the key is turned
to RUN.
If the engine stalls and the SECURITY light flashes,
wait about
10 minutes until the light stops flashing before
trying
to restart the engine. Remember to release the
key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the SECURITY light comes
on, you will be able
to restart the engine if you turn
the engine
off. However, your Passlock@ system is not
working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock@ at
this time. You may also want to check the fuse.
See
Fuses and Circuit Breakers on page 5-86. See your
dealer for service.
In an emergency, call the GM Roadside Assistance
Center. See
Roadside Assistance Program on page 7-5.
2-1 7

Section 3 Instrument Panel
Instrument Panel Overview ............................... 3.4
Hazard Warning Flashers
................................ 3.5
Other Warning Devices
................................... 3.6
Horn
............................................................. 3.6
Tilt Wheel
..................................................... 3.6
Turn SignaVMultifunction Lever
......................... 3.7
Exterior Lamps
............................................. 3.14
Interior Lamps
.............................................. 3.17
Accessory Power Outlets
............................... 3.19
Ashtrays and Cigarette Lighter
........................ 3.20
Climate Controls ......................................... 3.21
Dual Automatic Climate Control System
........ 3.21
Rear Climate Control System
......................... 3.25
Steering Wheel Climate Controls
..................... 3.27
Climate Controls Personalization
..................... 3.27
Warning Lights, Gages and Indicators ............. 3.28
Instrument Panel Cluster
................................ 3.29
Speedometer and Odometer
........................... 3.30
Tachometer
................................................. 3.30
Safety Belt Reminder Light
............................. 3.30
Air Bag Readiness Light
................................ 3-31
Charging System Light
.................................. 3.32 Voltmeter Gage
............................................ 3.32
Anti-Lock Brake System Warning Light
......... 3.34
Engine Coolant Temperature Gage
.............. 3.35
Malfunction Indicator Lamp
............................. 3.35
Oil Pressure Gage
........................................ 3.38
Change Engine Oil Light
................................ 3-39
Security Light
............................................... 3.39
Cruise Control Light
...................................... 3.40
Reduced Engine Power Light
......................... 3.40
Service All-Wheel Drive Light
......................... 3.41
Check Gages Warning Light
........................... 3.41
Gate Ajar Light
............................................. 3.42
Fuel Gage
................................................... 3.42
Low Fuel Warning Light
............................. 3.42
Driver information Center (DiC) .. .............. 3.43
DIC Operation and Displays
........................... 3.43
DIC Warnings and Messages
......................... 3.52
Audio System(s) ............................................. 3.56
Setting the Time
........................................... 3.56
Radio with Cassette and CD
.......................... 3.57
Radio with Six-Disc CD
................................. 3.66
Brake System Warning
Light
.......................... 3-33
3- 1

Warning Lights, Gages and Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions.
As you will
see in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they’re working. If you are
familiar with this section, you should not be alarmed
when this happens. Gages can indicate
when there may be or
is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there’s a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages
shows there may be a problem, check the section that
tells you what to do about it. Please follow this
manual’s advice.
Waiting to do repairs can be costly-and even
dangerous.
So please get to know your warning lights
and gages. They’re a big help.
Your vehicle may also have a Driver lnformation Center
(DIC) that works along with the warning lights and
gages. See
Driver lnformation Center (DE) on
page
3-43.
3-28

Speedometer and Odometer
Your speedometer lets you see your speed in both
miles per hour (mph) and kilometers per hour (km/h).
Your odometer shows how far your vehicle has
been driven, in either miles (used in the United States)
or kilometers (used in Canada).
The odometer mileage can be checked without the
vehicle running. Simply press the trip odometer button.
You may wonder what happens
if your vehicle needs
a new odometer installed. The new one will be set to the
correct millage total of the old odometer.
Trip Odometer
I
The trip odometer is part of the Driver Information
Center (DIC). For vehicles without a DIC, press the stem
located on the instrument panel cluster
to display the
trip odometer. Press and hold the stem to reset the trip
odometer once it is displayed.
Tachometer
The tachometer displays the engine speed in revolutions
per minute (rpm).
Notice: Do not operate the engine with the
tachometer in the shaded warning area,
or engine
damage may occur.
Safety Belt Reminder Light
When the key is turned to RUN, a chime will come on
for several seconds
to remind people to fasten their
safety belts, unless the driver’s safety belt is already
buckled.
The trip odometer can tell you how far your vehicle has
been driven since you last set the trip odometer
to zero.
3-30

Charging System Light
7 will come on briefly when
The
charging system light
you turn on the ignition,
but the engine is not
running, as a check to
show you it is working.
It should go out once the engine is running.
If it stays
on, or comes on while you are driving, you may have
problem with the charging system.
It could indicate
that you have problems with a generator drive belt,
or
another electrical problem. Have it checked right
away. Driving while this light is on could drain your
battery. a
If you must drive a short distance with the light on, be
certain
to turn off all your accessories, such as the radio
and air conditioner.
Voltmeter Gage
When your engine is not
running, but the ignition is
on (in
RUN), this gage
shows your battery's state of charge in
DC volts.
When the engine is running, the gage shows the
condition of the charging system. Readings between the
low and high warning zones indicate the normal
operating range.
3-32

Engine Coolant Temperature Gage
L
United States
Malfunction Indicator Lamp
Service Engine Soon Light in the
United States
or Check Engine Light in
Canada
I SERVICE
II
- 'I
Canada
This gage shows the engine coolant temperature. If the
gage pointer moves into the red area, the engine
coolant has overheated.
If you have been operating your vehicle under normal
driving conditions, you should pull
off the road, stop your
vehicle and turn
off the engine as soon as possible.
See
Engine Overheating on page 5-24.
ENGINE
SOON
United States
CHECK
Canada
Your vehicle is equipped with a computer which
monitors operation
of the fuel, ignition and emission
control systems.
3-35

This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON or CHECK
ENGINE light comes on and a chime will sound
to
indicate that there is a problem and service is required. Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage
to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice: If you keep driving your vehicle with this
light on, after a while, your emission controls
may not work as well, your fuel economy may not
be as good and your engine may not run as
smoothly. This could lead to costly repairs that may not be covered by your warranty.
Notice: Modifications made to the engine,
transmission, exhaust, intake or fuel system of your
vehicle or the replacement of the original tires
with other than those of the same Tire Performance Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modifications to these systems could lead to costly
repairs
not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test.
3-36
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is
not running. If the light doesn’t come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
0 Light Flashing - A misfire condition has been
detected. A misfire increases vehicle emissions
and may damage the emission control system on
your vehicle. Dealer or qualified service center
diagnosis and service may be required.
Light On Steady - An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis
and service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed.
Avoiding hard accelerations.
Avoiding steep uphill grades.
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light Is On Steady’’ following.

If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart
the engine. If the light remains on steady, see “If
the Light
Is On Steady” following. If the light is still
flashing, follow the previous steps, and drive the vehicle
to your dealer or qualified service center for service.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If
so, reinstall the fuel cap, making sure to fully install
the cap. See
Filling Your Tank on page 5-7. The
diagnostic system can determine
if the fuel cap has
been left
off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light
off.
Did you just drive through a deep puddle of water? Have
you recently changed brands of fuel?
If
so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, misfiring, hesitation
on acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
have your dealer or qualified service center check
the vehicle. Your dealer has the proper test equipment
and diagnostic tools to
fix any mechanical or electrical
problems that may have developed.
If
so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out.
A few driving trips should turn the light off.
3-37