1999 CHEVROLET CORVETTE steering

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1-22 How the Air Bag System Works
Where are the air bags?
The driver's air bag is in the middle of the
steering wheel.
The passenger's air bag is in the instrument panel on the
passenger's side.

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CAUTION:
If something is between an occupant and an air
bag, the bag might not inflate properly or it
might force the object into that person. The path
of an inflating air bag must be kept clear. Don't
put anything between an occupant and an air
bag, and don't attach or put anything on the
steering wheel hub or on or near any other air
bag covering.
When should an air bag inflate?
An air bag is designed to inflate in a moderate to severe
frontal or near
-frontal crash. The air bag will inflate
only if the impact speed is above the system's designed
ªthreshold level.º If your vehicle goes straight into a
wall that doesn't move or deform, the threshold level is
about 9 to 15 mph (14 to 24 km/h). The threshold level
can vary, however, with specific vehicle design, so that
it can be somewhat above or below this range. If your
vehicle strikes something that will move or deform, such
as a parked car, the threshold level will be higher. The air bag is not designed to inflate in rollovers, side
impacts or rear impacts, because inflation would not
help the occupant.
It is possible that in a crash only one of the two air bags
in your vehicle will deploy. This is rare, but can happen
in a crash just severe enough to make an air bag inflate.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were.
Inflation is determined by the angle of the impact and
how quickly the vehicle slows down in frontal or
near
-frontal impacts.
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. The sensing
system triggers a release of gas from the inflator, which
inflates the air bag. The inflator, air bag and related
hardware are all part of the air bag modules inside the
steering wheel and in the instrument panel in front of
the passenger.

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How does an air bag restrain?
In moderate to severe frontal or near
-frontal collisions,
even belted occupants can contact the steering wheel or
the instrument panel. Air bags supplement the protection
provided by safety belts. Air bags distribute the force of
the impact more evenly over the occupant's upper body,
stopping the occupant more gradually. But air bags
would not help you in many types of collisions,
including rollovers, rear impacts and side impacts,
primarily because an occupant's motion is not toward
those air bags. Air bags should never be regarded as
anything more than a supplement to safety belts,
and then only in moderate to severe frontal or
near
-frontal collisions.
What will you see after an air bag inflates?
After an air bag inflates, it quickly deflates, so quickly
that some people may not even realize the air bag
inflated. Some components of the air bag module
-- the
steering wheel hub for the driver's air bag, or the
instrument panel for the passenger's bag
-- will be hot
for a short time. The parts of the bag that come into
contact with you may be warm, but not too hot to touch.
There will be some smoke and dust coming from vents
in the deflated air bags. Air bag inflation doesn't prevent
the driver from seeing or from being able to steer the
vehicle, nor does it stop people from leaving the vehicle.
CAUTION:
When an air bag inflates, there is dust in the air.
This dust could cause breathing problems for
people with a history of asthma or other
breathing trouble. To avoid this, everyone in the
vehicle should get out as soon as it is safe to do so.
If you have breathing problems but can't get out
of the vehicle after an air bag inflates, then get
fresh air by opening a window or door.
In many crashes severe enough to inflate an air bag,
windshields are broken by vehicle deformation.
Additional windshield breakage may also occur from the
passenger air bag.

Air bags are designed to inflate only once. After they
inflate, you'll need some new parts for your air bag
system. If you don't get them, the air bag system
won't be there to help protect you in another crash.
A new system will include air bag modules and
possibly other parts. The service manual for your
vehicle covers the need to replace other parts.

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Your vehicle is equipped with a diagnostic module,
which records information about the air bag system.
The module records information about the readiness
of the system, when the sensors are activated and
driver's safety belt usage at deployment. Some
modules also record speed, engine rpm, brake and
throttle data.

Let only qualified technicians work on your air bag
system. Improper service can mean that your air bag
system won't work properly. See your dealer
for service.
NOTICE:
If you damage the covering for the driver's or the
passenger's air bag, the bag may not work
properly. You may have to replace the air bag
module in the steering wheel or both the air bag
module and the instrument panel for the
passenger's air bag. Do not open or break the air
bag coverings.
Servicing Your Air Bag-Equipped Vehicle
Air bags affect how your vehicle should be serviced.
There are parts of the air bag system in several places
around your vehicle. You don't want the system to
inflate while someone is working on your vehicle. Your
dealer and the Corvette Service Manual have
information about servicing your vehicle and the air bag
system. To purchase a service manual, see ªService and
Owner Publicationsº in the Index.
CAUTION:
For up to 10 minutes after the ignition key is
turned off and the battery is disconnected, an air
bag can still inflate during improper service. You
can be injured if you are close to an air bag when
it inflates. Avoid yellow wires, wires wrapped
with yellow tape or yellow connectors. They are
probably part of the air bag system. Be sure to
follow proper service procedures, and make sure
the person performing work for you is qualified
to do so.
The air bag system does not need regular maintenance.

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Memory (Option)
MEMORY can store and recall the settings for the
driver's seat position, the outside rearview mirror
positions, comfort control temperature, fan speed and
mode settings, telescopic steering wheel (if equipped),
radio presets, tone, volume, playback mode
(AM/FM, tape or CD), last displayed station,
compact disc position and tape direction.
The MEMORY buttons are located on the driver's side
door, above the power mirror controls. The MEMORY
buttons can store and recall settings for up to three drivers.Use button ª1º to store the settings for the first driver, button
ª2º for a second driver or press buttons 1 and 2 at the same
time for a third driver. To store your memory settings:
1. Adjust your settings for the driver's seat position,
outside rearview mirror positions, comfort control
temperature, fan speed, mode settings and telescopic
steering wheel (if equipped).
2. Press and hold a MEMORY button. The light above
the MEMORY button will glow steady for one
second and then flash once when the settings are
complete. Then the light will go off.
3. Set the radio presets, tone, volume, playback mode
(AM/FM, tape or CD), tape direction and compact
disc position.
Your memory settings are now programmed. Any
changes that are made to the audio system while driving
are automatically stored.
When first entering your vehicle, after pressing the
UNLOCK button on your key fob transmitter or a
MEMORY button, a recall of your settings will occur
when the ignition key is inserted. As the memory
settings are recalled, the light above the button will flash
until the correct settings are achieved, then glow for five
seconds when complete.

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A memory recall can be stopped by pressing any memory
seat, mirror or steering column position button.
Drivers 1, 2 and 3 correspond to the order in which your
key fob transmitters were programmed. (See ªFob
Trainingº in the Index.)
Memory recall will not work if the vehicle is moving,
the key is removed from the ignition, the driver's door is
open, a power seat, mirror or memory switch is being
used. Memory recall will be temporarily interrupted
during engine crank.
Remote Function Actuation System
Your vehicle has a passive/active Remote Function
Actuation (RFA) system that allows you to lock and
unlock your doors, unlock your hatch/trunk lid, turn
the panic alarm on and off and disarm or arm your
theft
-deterrent system. When using one of the key fob
transmitters supplied with your vehicle, the passive
range distance is as much as 30 feet (9 m) away from the
vehicle on the driver's side and 20 feet (6 m) away on
the passenger's side. The active range distance is as
much as 100 feet (30 m) away.
Your vehicle comes
standard with two
transmitters, and up to
three can be matched to
your vehicle.
See ªMatching Transmitter(s) to Your Vehicleº later in
this section.
Your RFA system operates on a radio frequency subject
to Federal Communications Commission (FCC) Rules
and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause
undesired operation.

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Resynchronizing Your Transmitter
Your RFA system uses a continually changing code for
increased security. Normally, the receiver in your
vehicle will keep track of this changing code. If your
vehicle does not respond to your transmitter, do the
following to determine what's wrong:
1. Get closer to the vehicle and try pressing a button
again. Your battery may be low (If so, see ªBattery
Replacementº in the Index).
2. While standing close to your vehicle, press the
LOCK and UNLOCK buttons on your transmitter at
the same time and hold for seven seconds. This will
attempt to resynchronize the security code in your
RFA key fob transmitter.
3. When resynchronization is achieved, the horn
will chirp.
Loss of synchronization will occur after transmitter
battery replacement or disconnection of the
vehicle's battery.
If attempts to resynchronize your transmitter to the
vehicle are not successful, you may need to match the
transmitter to the vehicle. See ªMatching Transmitter(s)
to Your Vehicleº in the Index.
Remote Hatch/Trunk Lid Release
To use the remote hatch/trunk lid release on automatic
transmission vehicles, your vehicle must be in PARK (P)
or NEUTRAL (N). For manual transmissions, set the
parking brake. See ªParking Brakeº in the Index.
Press the button with the trunk symbol on it, located at
the left
-hand side of the steering column on the
instrument panel, to release the hatch/trunk lid from
inside your vehicle.

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Theft
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft
-deterrent
features, we know that nothing we put on it can make
it impossible to steal. However, there are ways you
can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it's an
easy target for joy riders or professional thieves
-- so
don't do it.
When you park your vehicle and open the driver's door,
you'll hear a chime reminding you to remove your key
from the ignition and take it with you. Always do this.
Your steering wheel will be locked, and so will your
ignition. If you take the key with you, and you have an
automatic transmission, it will be locked. And remember
to lock the doors.
Parking at Night
Park in a lighted spot, close all windows and lock your
vehicle. Remember to keep your valuables out of sight.
Put them in a storage area, or take them with you.
Parking Lots
If you park in a lot where someone will be watching
your vehicle, it's best to lock it up and take your keys.
But what if you have to leave your key? Do not leave
valuables in your vehicle, since there would be no place
to secure them.
Universal Theft-Deterrent System
Your vehicle has
a theft
-deterrent
alarm system.
With this system, the SECURITY light will flash as you
open the door (if your ignition is off). This light reminds
you to arm the theft
-deterrent system.