service CHEVROLET CORVETTE 1994 4.G User Guide

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RIDE CONTROL
SPORT
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Selective Ride Control
(OPTION)
This knob is on the center console. Turn i
to select the ride control of your choice:
TOUR: Use for city and highway driving
Provides a smooth, soft ride.
SPORT: Use where road conditions or
personal preference demand more control
Provides more “feel,” or response to the
road conditions.
PERF: Use for performance driving.
Provides tight, firm ride and precise
response to road conditions. ‘TOUR” and “SPORT” will
provide a
imilar ride at low speeds around town,
md both settings will increase control
tnd firmness at higher speeds. “SPORT,”
lowever, will adjust more at ‘higher
;peeds than “TOUR” will.
,‘PERF” will provide much more
Zontrol and a firmer ride at all speeds.
You can select a setting at any time.
Based on your speed,
the system
wtomatically adjusts to provide the best
aide and handling. Select a new setting
whenever driving conditions change.
The “SERVICE
RIDE CONTROL” light
monitors the system. Refer to “Service
Ride Control Light” in the Index.
Limited-Slip Rear Axle
Your rear axle can give you additional
traction on snow, mud, ice, sand or gravel.
It works like a standard axle most
of the
time, but when one of the rear wheels
has no traction and the other does,
the
limited-slip feature will allow the wheel
with traction to move the vehicle.
Parking
Parking Brake
To set the parking brake: Hold the brak
pedal down. Pull the parking brake lever
up, then move it back down. This sets
your parking brake, even though the leve
is down. If the ignition is on, the parking
brake indicator light will come on.
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It takes more (or less) fuel to fill up
than the gauge reads. For example, the
gauge reads half full, but it took more
(or less) than half of the tank’s
capacity to fill it.
The gauge moves a little when you
turn, stop or speed up.
You can use the Trip Monitor to display
more detailed fuel information. Each time
you press “FUEL INFO,” one
of the
following will appear next to the fuel
gauge.
INST The fuel economy calculated
for your current driving conditions.
AVERAGE: The fuel economy
calculated for the current tank of fuel,
or since you last reset the display.
RANGE: The distance you can drive
before refueling.
Blank: The fuel gauge is displayed
alone.
You should reset the fuel information
display every time you refuel. Press
“RESET FUEL” on the Trip Monitor. :loser to the floor.
It may
take longer to
stop. If the light is still on, have the
vehicle towed for service. (See “Towing
Your Vehicle” in the Index.)
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Brake System Warning Light
Your Corvette’s hydraulic brake system
is divided into two parts. If one part isn’t
working, the other part can still work and
stop you. For good braking, though, you
need both parts working well.
This light should come on as you start thc
vehicle. If it doesn’t come on then, have
it fixed
so it will be ready to warn you if
there’s a problem. If this warning light
stays on, there could be
a brake problem.
Have your brake system inspected right
away.
If the light comes on while you are
driving, pull
off the road and stop
carefully. You may notice that the pedal
is harder to push. Or, the pedal may go

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’arking Brake Indicator Light
rhis light will come on when you set your
mking brake, and it will stay on if your
)arking brake doesn’t release fully.
rhis light should also come on as you
tart the.vehicle. If it doesn’t come on
hen, have it fixed
so it will be ready to
cmind you if the parking brake hasn’t
&eleased fully.
SERVICE
Anti-Lock Brake System Warning
Light
With anti-lock, this light will come on
when you start your engine and may stay
on for about two seconds. That’s normal.
If the light doesn’t come on, have it fixed
so it will be ready to warn you if there is i
problem.
If the light stays on, turn the ignition off.
Or, if the light comes on when you’re
driving, stop as soon as possible and turn
the ignition
off. Then start the engine
again to reset the system. If the light still
stays on, or comes on again while you’re
driving, your Corvette needs service. If
the regular brake system warning light
isn’t on, you still have brakes, but you
don’t have anti-lock brakes.
If the regular
brake system warning light is also on, you
don’t have anti-lock brakes and there’s a
problem with your regular brakes. See
“Brake System Warning Light” earlier in
this part.
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ABS
ACTIVE
Anti-Lock Brake System Active Light
When your anti-lock system is adjusting
brake pressure to help avoid a braking skid, the
“ABS ACTIVE’ light will come
on. Slippery road conditions may exist if
this light comes
on, so adjust your drivinl
accordingly. The light will stay on for a
few seconds after the system stops
adjusting brake pressure. The
“ABS ACTIVE’ light also comes on
briefly, as a bulb check, when the engine
is started.
. . .86
SERVICE
ASR
LSR System Warning Light
’his light will come on for a few seconds
vhen you turn the ignition on. If it stays
m, there may be a problem with
the ASR
ystem. See your dealer.
Vhen this warning light is on, the system
vi11 not limit
wheel spin. Adjust your
lriving accordingly.
ASR
OFF
LSR Off Light
’his light will come on for a few seconds
lrhen you turn the ignition
on. It also
omes on and stays on when the ASR
lutton is pressed to turn the system
off.
lee “Acceleration Slip Regulation
lystem” in the Index.

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ACTIVE
ASR Active Light
When your ASR system is limiting wheel
spin, the “ASR ACTIVE’ light will come
on. Slippery road conditions may exist if
this light comes
on, so adjust your driving
accordingly. The light will stay on for a
few seconds after the ASR system stops
limiting wheel spin. The “ASR ACTIVE’
light also comes
on briefly, as a bulb
check, when the engine is started.
Low Tire 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 Commission (FCC)
Rules.
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
2. This device must accept any
interference,
and
interference 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.
LOWIFLAT
TIRE
..
The Low Tire Pressure Warning System
(LTPWS) monitors air pressure in each
road tire while you’re driving your
Corvette. The “LOW/FLAT TIRE” light
will come
on whenever tire pressure in
any road tire goes below
25 psi (175 kPa)
and it will stay
on until you turn off the
ignition. The light may come on if any
LTPWS parts aren’t working properly.
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For LTPWS to work properly, you must
drive your Corvette faster than
25 mph
(40 km/h) and for more than
2 miles
(4 km). The system will not warn you
before
you begin to drive that a tire is flat.
When the “LOW/FLAT TIRE’ light
comes on, check
the tire pressure in all
four road tires as soon as you can. Adjust
the tire pressure as needed to those shown
on the Tire-Loading Information label on
the driver’s door. If the light stays on after
the tire pressure is adjusted, see your
dealer.
NOTICE:
Driving with a flat tire may damage
the tire,
the wheel or the tire pressure
sensor installed inside the tire on the
wheel rim. Using tire sealants may
also damage
the sensor.
If you have EMTs, see “Extended
Mobility Tires”
in the Index. The
LTPWS sensor is directly opposite
the valve stem on the tire. Take care when
servicing or having your tires serviced.
The sensors may not work properly if
damaged. To prevent damage to the
sensors, see the 1994 Corvette Service
Manual for correct tire mounting and
dismounting procedures.
The “LOWRLAT TIRE” light may come
on if your vehicle is close to another
vehicle that has LTPWS and has a tire
with low pressure.
LTPWS can
warn you about a low tire,
but it does not replace normal tire
maintenance. See “Tires” in the Index.
. . .88

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SERVICE
LTPWS
‘ervice LTPWS Light (Option)
‘he “SERVICE LTPWS” light comes on
rhenever a LTPWS part is not working
roperly. It may also come on when
ou’re going less than
25 mph (40 kmk)
r in stop-and-go traffic. The light will go
ut when the electronic receiver gets a
ignal from each sensor.
lheck the system by turning the ignition
n. The light should come on and then go
ut. See your dealer if the light stays on
r doesn’t come on. Here
are two situations that cause the
“SERVICE LTPWS” light to come on
and stay on. Both
of these situations are
normal and do not indicate that anything
is wrong with your Corvette.
You turn the ignition on three times in
a row for half an hour without moving
your Corvette. The light will then
come on every time you
turn the
ignition on until you move your
Corvette.
You run your Corvette three times in a
row for half an hour while all four
sensors are missing. (All the sensors
would be missing, for example, if yo,u
put different wheels on your Corvette
without transferring the sensors.)
If you would like to clear the
”SERVICE LTPWS” light from your
driver information center permanently,
see your dealer.
[f the light comes on and stays on, even
when the vehicle is driven, there may be a
problem with LTPWS. See your dealer.
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- TEMP .F
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rEMP “F
LT5 Engine LT1 Engine
Engine Coolant Temperature Gauge
This gauge shows the engine coolant
temperature. If the gauge pointer moves
into the shaded area, your engine is too
hot!
It means that your 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.
HOT COOLANT CAN BURN YOU
BADLY!
In “Problems on the Road,” this manual
shows what to do. See “Engine
Overheating” in the Index.
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SOON
0
Malfunction Indicator Lamp (Service Engine 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 that you have a
problem.
You should take your vehicle in
for service soon.
NOTICE:
If you keep driving your vehicle
with this light on, after a while the
emission controls won’t work as
well, your fuel economy won’t be as
good and your engine may not
run as
smoothly. This could lead to costly
repairs not covered by your warranty.
W
OIL
PRESS
PSI
. .,
Engine Oil Pressure Gauge
This gauge tells you if there could be a
problem with your engine oil pressure.
The engine oil pressure gauge shows the
engine oil pressure
in psi (pounds per
square inch) or kPa (kilopascals) when
the engine is running. Oil pressure
should be
20 to 80 psi (140 to 550 kPa).
It may
vary with engine speed, outside
temperature and oil viscosity, but readings
above the shaded area show the normal
operating range. Readings in the shaded
area tell you that the engine
is low on oil,
or that you might have some other oil
problem. See “Engine Oil” in the Index.
91 ...

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I NOTICE:
I
Damage to your engine from
neglected oil problems can be costly
and is not covered by your warranty.
... 92
TEMP OIL
OF TEMP OIL
‘F
280
T1 Engine LT5 Enginl
Zngine Oil Temperature Gauge
rhis gauge shows your engine oil
emperature. Oil temperature may
vary
vith the type of driving you do and
weather conditions, but readings above
the shaded area show the normal
operating range. If your oil temperature
is close to the shaded area and it stays
there, your oil temperature is too high.
Check the engine coolant temperature
and engine oil level. If your engine
is too
hot, see “Engine Overheating” in the
Index. Your vehicle may need service;
see your dealer.
1 IZI I
I ,I I
)r numeric gauge measurements,
ness the
“GAUGES” button on the Trip
[onitor until
“OIL” appears. The number
at appears next to the fuel gauge is the
1 temperature. If “LO’ appears, the
mperature
is below 32°F (OOC).

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Zharging System Light
rhis light will come on when you turn on
he ignition, but the engine is not running
LS a check to show you it is working. It
ihould go out when the engine starts. If
t stays on or comes on while you are
Iriving, you may have a problem with
he electrical charging system. It could
ndicate that you have a loose or broken
lrive belt or another electrical problem.
3ave it checked right away. Driving whil
his light is
on could drain your battery.
:f you must drive a short distance with thl
ight on, be certain to turn
off all your
tccessories, such as the radio and air
:onditioner.
loor Ajar Light
’his light comes on when you open one
If the doors with the ignition on. It stays
In until you fully close the door. Have
‘our vehicle serviced if the light comes
In and stays on even when the doors are
ully closed.
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Sngine Oil Life Monitor
?he “CHANGE OIL” light comes on for
, few seconds when you turn the ignition
In. It will come on and stay on when it’s
ime to change your oil.
:he monitor uses oil temperature and
rngine revolutions to decide when the oil
s nearly worn out. The light is only a
eminder, though. You should change
‘our oil at the intervals recommended in
‘our Maintenance Schedule, even if the
‘CHANGE
OIL” light hasn’t come on.
3e sure to reset the monitor when your oil
s changed, even if the “CHANGE OIL”
ight didn’t come on. If you don’t reset
he monitor, it won’t work correctly.
Tollow these steps:
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