1993 CHEVROLET CORVETTE check engine light

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Check Gauges Light
This light will come on briefly whien y6u
are starting the engine. I€ the light
comes on and stays on while you are
driving, check your various gages to see
if they are in the warning zones.
If this light comes on and stays on with
the engine running, this indicates one of
the following conditions:
high oil temperature
high coolant temperattiE’
high battery voltage
low battery voltage
IOW oil pressure
or low fuel level (zero bars showing).
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Security Light
The SECURITY light reminds you to
arm your theft deterrent system by
flashing when the ignition is in Lock-
and the doors are opened. It keeps
flashing until
you arm the theft
deterrent system
by locking the doors
using the power door lock button or the
Passive Keyless Entry system.
Once the system
is armed, the light
stops flashing
and remains lit. When the
last
door is shut, the light will stay on
for two seconds and then
go out. It will
also remain lit if the hatch is left open
but the theft deterrent system is still
armed.
If you close the doors and the hatch
without arming the system, the
SECURITY light goes out immediately.
When you re-enter the vehicle, the light
w.ill flash until
you close the door or the
hatch,
or turn the ignition .on. See the
Index under PASS-Key TM and Universal
.Theft Deterrent.

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1 Engine ~e. oni it or
The Engine Oil Life Monitor us&&
engine oil temperature and engine
revolutions
to 'determine when the oil is
nearly worn out.
There ,is a CHANGE OIL light on the
left side ,of the- instrument cluster. It
comes
on for a fkw seconds as a bulb
check when you sta-rtyour vehicle. It
mrnes on and stays on when it is time
to change yuur oil.
The CHANGE OIL light is only a
reminder.
You should change, your oil at
$he intervals recommended in your
Maintersance- Schedule menif the
CHANGE OIL 1-ight hasn't come on.
Resetting the Engine Oil Life
Monitor:
1, %LEU the key to the Run pasition, but
don't
start the engine.
2. Press the ENG MET button .on the
Trip Monitor. Within five seconds,
press the ENG MET button again.
3. Within five seconds of step 2, press
and hold the GAUGES button on
the Trip Monitor. The CHANGE
OIL light d flash.
4..Hold the GAUGES button until the.
CHANGE OIL light stops flashing
and goes out; This should take about
ten seconds. When the light goes out,
the Engine Oil Life Monitor is reset.
If it doesn't reset, tum the- ignition to
Of€ and repeat the procedure.

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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
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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.
I14
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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/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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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.
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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*
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