check engine light CHEVROLET CORVETTE 1993 4.G User Guide

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Low 7ire Pressure Warning Light
(OPTION)
The LTPWS has a sensor 'on each road
wheel that transmits-to
a receiver on the
instrument panel.
The system operates
on a radio frequency subject
to Federal
Communications Cbmission
(FCC)
Ruks.
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
interhence,
and (2) This device.must
accept
any interhence received,
including interference that-may cause
undesired operation.
Changes or modifications to- this system
by other than an authorized service
facility could void authorization to use
this equipment.
The Low Tre Pressure Warning System
(LTPWS) monitors the
air pressure in
each road tire (except the spare tire)
while the car is being driven. The
LTFWS will not warn the driver if a tire
is
already flat before the vehicle is started.
This light comes on whenever a tire
pressure
goes below 25 psi (I 75 Ha) in
any road tire while your Corvette is being
driven.
You must drive the car faster than
25 mph (40 km/h) and for more than 2
miles (4 h) -for the system to work
properly.
The Low Tire Pressure Warming
Light also warns you if any of the
system's comp.onents-are not working
properly. The
LOW TIRE PRESSURE
light will remain on until the ignition is
turned
off. This will also reset the system.
When the LOW TIRE PRESSURE
fight comes on, check the tire -pressure
.in
all four road tires as soon as you can,
using the
tire pre:ssure gage.provided in
thesenter console. Adjust the tire
pressure as needed to those shown on
the Tire-Loading Information label
10-cated
on the driver's door, The LOW
TIRE PRESSURE light may come on
if your vehicle is close to aaother
vehicle that has
a Low Tire Pressure
Warning System
and has a tire-with low
pressure.
The LTPWS sensor is directly opposite
the valve stem on the tire. Take extreme
care when servicing or
having your tires
serviced. The sensors may not work
properly
if damaged.
If you need to take the tire off the wheel,
do it at a
90" angle from the valve stem.
Removing the tire from the wheel at any
.. 1

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point more than 90" from the valve stem
may damage the LTPWS sensors..
If this light stays on after the tire pressure
is properly adjusted, see your dealer.
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Service LTPWS Light (OPTION)
The SERVICE LTPWS light comes on
whenever a Low Tire PressureWrtming
System component is not working
properly. It
may also come on during
law speed (less than 25 rnph,
40 Idh) or. stop-and-go driving, even
though tire pressure is above 25 psi
(175 kPa-) in each tire. This light turns
o€f when the electronic receiver gets a
coded signal
from each sensor..
.Check the system
by turning the ignition
off, then on again. If'lhe system is
worling, the light should come on-and
then go out. See your dealer if the light
remains on
or doesn'.t come on .at ail.
If your vehicle is operated for three
consecutive half-hour time periods
without being moved,
the .. SERVICE
LTPWS light will come on. Each time
the vehicle
is started thereafter, the light
will come mand stay on until the vehicle.
is moved. When the vehicle
is moved, the-
SERVICE LTPWS light will go out.
This is a normal condition, and does
not indicate
anything-wrong with the
system.
(If you would Iilre to permanently
clear the
SERVICE LTPWS light from
your Driver Information Center, see
your dealer for assistance.)
The
SERVICE LTPWS light will also
corne. on if.the vehicle is operated for
three consecutive half-hour periods-
when
,dl four tires- have been replaced
with
snow tires or aftermarket tires, or
if all four LT-PWS sensors. are damaged
or missing. The SERVICE LTPWS
light will stay o.n until the system
receives
a sensor signal. I€ the light
'comes on and stays on even when the
vehicle is driven, this may .indicate
a
problem. See your dealer for assistance.
To prevent damage to the sensor, follow
the instructions
for mounting and
dismounting tires in
the 1993 Corvette,
Service Manua.1.
LTPWS can warn you of a Idw tire
situation-or
a system problem, but it
-does not substitute .foT.norrnal tire
maintenance. See the
Itzdex under Tires;

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I
I
/iflatable Restraint light
The. INFL REST (Inflatable. Re'str'aint)
light
Is part ofthe Supplemental
Inflatable
Restraint system on your
vehicle. This light will flash -seven t,o
hine ti-mes when you turn the ignition
key
to Ruil. If: thklight comes oh.when
you are driving, fails to glow when you
turn the key to Run, or stays on after
turning the key to Run, there may be a
problem with the system.
.ASR System. Warning and
lndicator Lights
The following three 1ights.m your
Driver Information Center tell you
abo.ut your .ASR (Ac.ce1eratio.n Slip
Regulation),
ASR Acfive Light
This indicator on the Driver- Information
Center will
come on when you turn the
ignition
on and remain on for a few
seconds during
a system check. It also
indicates when the ASR system has
been activated. See the Index under
Accel@rution Slip Regulation. (ASR)
System.

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'I
ASR Off Ught
This indicator will coine on when you
turn the ignition on and remain on for a
few seconds during a system check. It
also comes on and stays on when the
ASR button is pressed to turn the
system off. See the Index under
Acceleration Slip Reguluat'a'on (ASR)
system.
I16
Seruice ASR Light
This indicator will come on when you
turn the ignition on and remain on for a
few seconds during a.system check.
If it
stays on, this may indicate a problem
with the ASR system. See your dealer
for
service.
A .'
. .. ..
~f you let ymi tires :spin at-
- high .speed when.~e.. .ASR. ..
.OFF light is.:on, :or dieg-the :
',SERVICE ASR Iight ,is on, .your . .'
tires can pplode,.and, you 'or others
could .be injured. And, spinning
your tires
with either- of -these light2
on can cause the-automatic . ;
transmission to overheat or can .:
'cause other problems. That .could
cause an engine fire or other
damage.
When you're stuck, spin
the wheels as little
as possible. If'
your vehicle is stuck; don't: .spin the
wheels above 35 mph (56 Wh) as
shown on the speedometer,

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Charging System Light
The charging system light will come on when
you turn on the ignition, but the
engine
is not running, as a check to
show you it is working. Then it should
go out. If it stays on when the engine is
running; or comes on while you are
driving,
you may have a problem with
the electrical charging system. It could
indicate that you have. a loose or broken
drive
belt or another electrical problem.
Have it checked right away. Driving
while thisJight
is. on could drain your
battery.
If you must drive a short distance with
the lght un, be certain to turn of€ aU.
your accessories, such as the radio and
air conditioner.
Low Oil Light
This light will come on for a few
seconds wheri
you start your vehicle
and
will stay on if your oil is '/z to 1%
quarts low (with the vehicle nearly
level).
See the Index under Engine UiE.
For the LT5 Engine Only: If this light
comes on, and you need to verify the oil
level, let
your vehicle sit for approximately
two hours
with the engine off before
checlung the
oil, See the Index under
Checking Engine Oil Level for the
proper procedure.
You should check your oil level
regulariy.
This light is an added
reminder.
Malfuncfion Indicator Lamp
(Senrice hghe Soon Light)
A computer monitors operation of your
fuel, ignition and emission control
systems. This light should
come on
when the ignition is on, but the engine
is not running,
as a check to show you it
is working. If
it does not come on at all,
have it fixed right away. If it stays on, or
it comes on while you
are driving, the
computer is indicating th,at you have a
problem.
You should take your vehicle
in for service soon.

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Passive Keyless Entry Light
If the.Passive Keyless Entry system is
on, this light comes on for two seconds
whenyou put the key in the ignition
and turn it to the Run position. If the
Passive -Keyless Entry .system is off, the
light will not cume on. This light also
comes on .md flashes when you we
programming~ one or more transmitters.
See
the- Index under. Passive Keyless
Entry System.
System Problems
The Central Control Module (CCM)
controls several electronic systems on
your Corvette. SYS will flash three
times every
15 seconds on the display
near the he1 gage if there is a problem
with one of the CCM-cantrolled
systems. Have your vehicle checked
by
a. Chevrolet dealer if SYS keeps
appearing.
If the SECURITY light flashes at the
same the SYS flashes on the
instrument panel, a ,problem has been
detected in your the& deterrent system.
If this OCCUTS, have YQW vehicle
serviced.
Roof Panel ~XWE)
Removing the Roof Panel:
' 1. Be sure your vehicle is on a level
2. Set the parking brake.
3. Shift your automatic transmission
into P (Park). Or, if you have the
manual
transmission, shift it into
R {Reverse).
4. Lower the side windows all the'way
down.
5. Turn your ignition key to the Lock
position.
6. Move both sun visors to the side to
uncover the
.front bolt access holes.
place.
k p*
.&
"' 120

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Automutic Electrunic
Climate Cuntvul (C0nt.j
Use These Settings to Set Your Fan
Speed
V (Lqw.Ean): 'This. setting overrides.
the automatic fan speed. To decrease
fan speed, press the
V button and
hold until
you see the fan speed you
want.
AUTO # (Automatic Fan): when
you use this setting, the controller
chooses the fan speed based on the
input signals.
In the AUTO mode
during hot weather (after the vehicle
has not been running for a period of
time) the-fan speed will be
low when
the vehicle is initially
started. This
I42
initial low fan speed is used to purge
the vehicle of hot interior air. In the
AUTO 3f mode during cold weather,
the
fan speed will be delayed. in the
heat
mode until the engine coolant
reaches
an adequate temperature to
provide heat.
A (High .Fan) : This setting overrides
the automatic fan speed. To increase
fan speed, press the A button and
hold until you see the fan speed you
want. There is no €an blower delay.
Fan speeds wil1 range from 1 (lowest
setting)
to 10 (highest setting). When
any fan speed is selected, it will appear
on the digital screen briefly and the
ot~tside temperature will also appear.
Air Conditioning System
If a light above a button flashes when
you turn
on the ignition, it may indicate
an electrical problem with your air
conditioning system. The flashing will
continue for one minute, then go but. It
means you should have your system
checked
and serviced if needed.
It may
also mean the rekigerant level is
too low in your air conditioner system.
The. light will still flash after rebigerant
is added. This means your system will
not cool the air until it is reset.

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‘I
PaSShg (COW.)
Watch for traffic signs, pavement
markings,
-and lines. If you can see a
sign
up ahead that might indicate a
turn
or an intersection, delay your
pass. A broken center line usually
indicates -it’s all right
to pass,
(providing the road ahead
is clear).
Never cross a solid line on.your side
of the lane or a double solid line, even
if the road seems empty of
approaching traffic.
* If you suspect that the- driver of the
vehicle
you want to. pass isn’t .aware
of-your presence, tap the horn a
couple of times before. passing.
Do not.get too close- to the vehicle
you want
to pass while you’re
awaiting an opportunity. For one
thing, following tQo closely reduces
your area
of vision, especi-ally if you’re
following
a larger vehicle. Also, you
won’t have adequate space if the
vehicle
,ahead suddenly slows dr
stops. Keep back a- reasonable
distance.
I 82
When it 1cr.oks like a chance to:pass is
.doming up, start to-accelerate but stay
in the- right lane and don’t -get- too
close. Time your move so, you will be
increasing speed as’the time comes to
move into the other
lane.3 the. way is
clear to pass, you will have a “running
start’” that
more than makes up fix
the distance you would lose by
dropping back. And
if something
happens to Cause you to cancel your
pass, you need only slow down and
drop back again and wait for another
opportunity.
If other vehicles .are lined up to pass a
slow vehicle, wait your turn. But: take
care that someone- isn’t trying to pass
you as you pull out to pass the slow
vehicle. Remember to glance, over
your shoulder andxheck the blind
spot.
Check your mirr-ors, glance over your
shoulder, aad start your left lane
change-,signal before
,moving aut of
the right lane to pass. When you are
far enough ahead of the. passed
vehicle to see-its front in your inside
mirror, activate.your right lane ,change
signal
and move back into the right
lane; (Remember that-your right
0-utside mirror is-convex. The vehicle
you just passed ‘may seem to be
farther away+from you than it redly
is.)
Try n0t.t.o pass more than one vehicle
at a time on two-lane roads.
Reconsider before passing the next
vehicle.
.vehicle too rapidly. Even though the
brake lights. are not flashing, it may be
slowing dawn or starting to turn.
If you’re- being passed, make it easy
for the following. driver to get ahead
of
you. Perhaps you can ease. a little to
the right;
Don’t overtake a slowly .m,oving

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Remember that your hedlights light up
€arless of a roadway when you are .in a
turn or cuwe.
Keep your eyes: moving; that way, it's
easier to pick aut d.imly lighted objects.
Just as sour headlights should be
checked regulaily-far proper aim, so;
should your .eyes be mmined regularly.
Some drivers suffer from night
blindness-the inabiIity to
see in dim
light-and
wen? even aware .of it,
b '
c..
Driving in the.Rain
-Rainiand wet roads can mestll dtiving
,.trouble. On a wet road you can'-t stop.,
accelerate
or turn as well because your
tire-to-roacl traction.
isn't as good as on
dry roads. And, if your tires don't have
traction.
It% always wise t;p g~ slower and be
cautious'if rai.n starts to fall While ybir
are driving. The surface may get wet
suddenly when. your:reflexes are. tuned
far driving CI~ dry pavement.
Thei;he.avier. the rain,
the hatdef it is to-
see. Eveh if your windshield wiper
blades are in good shape, a heavy rain
can male it harder to see road signs and
traffic signals, pavement markings, the
edge of the road, and even pegple
much tread left, youl~ get even less

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Tips on Driving in Fog (CONT.)
something between you and moving
vehicles-space, trees, telephone poles,
a private driveway, anything that
removes you
from other trafic.
If visibility is near zero and you must
stop but are unsure whether you are
away
from the road, turn your lights on,
start your hazard warning flashers, and
sound your horn at intervals or when
you hear approaching traffic.
Pass other vehicles in fog only if you
can see far enough ahead to pass safely.
Even then, be prepared to delay your
pass if you suspect the fog is worse up
ahead. If other vehicles try to pass you,
make it easy for them.
City Driving
One of the biggest problems with city.
streets
is the amount o€ traffic on them.
You’ll want to watch
out for what the
other drivers are doing
and pay
attention
to traffic signals.
Here are ways to increase your safety in
city driving:
* Know the best way to get to where
you-are going.
Try not to drive around
trying to pick out a familiar street or
landmark. Get a city map
and plan
your trip into an unknown part of the
city
just .as you would for a cross-
country trip.
9 Try to use the freeways that rim and
crisscross
most large cities. You’ll
save time
and energy. (See the next
section,
Freeway Driving.)
Treat a green light as a warning
.signal, A traffic light is there because
the corner
is busy .enough to need it.
When a light turns green, and just
before you start to move, check both
ways for vehicles. that have not
cleared
the intersection or may be
running the red light.
Obey all posted speed limits. But
remenher that they are
for ideal road,
weather
and visibility conditions. You
may need to drive bglow the .posted
limit
.in b.ad weather or when visibility
is especially poor,
clear
of intersections when you see or
hear emergency vehicles.
9 Pull to the right (with care) and stop
c