check engine light CHEVROLET CORVETTE 1994 4.G Owner's Manual

Downloaded from www.Manualslib.com manuals search engine 1 Jump Starting
If your battery has run down, you may
want to use another vehicle and some
jumper cables to start your Corvette.
But please follow the steps below to
do it safely.
NOTICE:
Ignoring these steps could result
in costly damage to your vehicle
that wouldn’t be covered by your
warranty.
Trying to start your Corvette by
pushing or pulling it could damage
your vehicle,
even if you have a
manual transmission. And if you
have an automatic transmission, it
won’t start that way.
Ib Jump Start Your Corvette:
1. Check the other vehicle. It must have
a 12-volt battery with a- negative
ground system.
NOTICE:
If the other system isn’t a 12-volt
system with a negative ground, both
vehicles can be damaged.
2. Get the vehicles close enough so the
jumper cables can reach, but be sure
the vehicles aren’t touching each
other. If they are, it could cause a ground connection you don’t
want.
You wouldn’t be able to start your
Corvette, and the bad grounding could
damage the electrical systems.
3. Turn off the ignition on both vehicles.
Turn
off all lights that aren’t needed,
and radios. This will avoid sparks and
help save both batteries. And it could
save your radio!
I NOTICE:
I
If you leave your radio on, it could be
badly damaged. The repairs wouldn’t
be covered by your warranty.
4. Open the hoods and locate the
batteries. Find the positive
(+) and
negative
(-) terminals on each.
143 ...

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
Remove the nut on the outboard side
of the unit. Then loosen the front and
inboard nuts. For the LT5 engine, loosen
the two inboard nuts. Move the ECM unit
to either side.
Fluid should be added if the fluid level
is at or below the “ADD” mark on the
reservoir. There are additional instructions
on the reservoir cap.
When returning the ECM to its proper
position, make sure the bolts are aligned
with the slots in the bracket. Then gently
push down on the unit. When replacing
the unit, be careful not to over-tighten the
nuts -just tighten them until they are
snug.
. . * 188
Rear Axle
When to Check Lubricant
Refer to the Maintenance Schedule
to determine how often to check the
lubricant. See “Periodic Maintenance
Inspections” in the Index.
How to Check Lubricant
If the level is below the bottom of the
filler plug hole, you’ll need to add some
lubricant. Add enough lubricant to raise
the level to the bottom of the filler plug
hole.
What to Use:
To add lubricant when the level is low, use
Axle Lubricant (GM Part
No. 12345977)
or
SAE 8OW-90 GL-5 gear lubricant.
To completely refill after draining,
add 4 ounces (1 18 ml) of Limited-Slip
Differential Lubricant Additive (GM Part
No. 1052358). Then fill to the bottom of
the filler plug hole with Axle Lubricant
(GM Part
No. 12345977) or SAE 8OW-90
GL-5 gear lubricant.
Engine Coolant
The following explains your cooling
system and how to add coolant when
it
is low. If you have a problem with
engine overheating or
if you need to add
coolant to your high fill reservoir, see
“Engine Overheating” in the Index.
The proper coolant for your Corvette will:
0
0
0
0
0
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 262°F
(128°C).
Protect against rust and corrosion.
Help keep the proper engine
temperature.
Let the warning lights work as they
should.

Downloaded from www.Manualslib.com manuals search engine Extended Mobility Tires (omoiv)
If your Corvette has optional Goodyear
Extended Mobility Tires (EMT’s), the tires will have “EMT” molded on the
sidewalls. These tires perform
so well
without any air that a Low Tire Pressure
Warning System (LTPWS)
is used to
alert you if a tire has lost pressure.
A
“LOWELAT TIRE” light will appear on
your Driver Information Center if a tire’s
inflation pressure is less than
25 psi
(1 70 kPa). If the “LOWELAT TIRE”
light comes on, check your tire pressures
as soon as you can. See “Low Tire
Pressure Warning System” in
the Index
for additional information.
If a tire goes flat, you won’t need to stop
on the side of the road to change the tire.
You can just keep on driving. The shorter
the distance you drive and the slower the
speed, the greater the chance that the tire
will not have to be replaced. If you drive on
a deflated EMT for distances
of
50 miles (80 km) or less and at speeds of
55 mph (90 km/h) or less, there is a good
chance that the tire can be repaired. The
tire can operate effectively with no air
pressure for up to
200 miles (320 km) at
speeds up to
55 mph (90 km/h), but the
tire would then have to be replaced. Also
remember: When a tire is filled with air, it
provides a cushion between the road and
the wheel. Because you do not have this
cushion when driving on a deflated tire,
try to avoid potholes that could damage
your wheel and require replacement of it.
Some road hazards can damage a tire
beyond repair. This damage could occur
before you’ve driven on the tire in a
deflated condition. Whenever a tire has
been damaged, or if you’ve driven any
distance on a deflated EMT, check with
a Goodyear EMT Service Center to
determine whether the tire can be
repaired or should be replaced. To
maintain your vehicle’s extended
mobility feature, all replacement tires
must be Extended Mobility Tires.
See the Goodyear Extended Mobility Tire
Owner’s Manual and Limited Warranty
supplied with your Corvette for additional
information.
205. .

Downloaded from www.Manualslib.com manuals search engine Glass
Glass should be cleaned often. GM Glass
Cleaner (GM Part
No. 1050427) or a
liquid household glass cleaner will
remove normal tobacco smoke and dust
films.
Don’t use abrasive cleaners on glass,
because they may cause scratches. Avoid
placing decals on the inside rear window,
since they may have to be scraped
off
later. If abrasive cleaners are used on the
inside of the rear window, an electric
defogger element may be damaged. Any
temporary license should not be attached
across the defogger grid.
Cleaning Dulso-Coated Moldings
These moldings are around the hatch
opening in your Corvette’s rear area.
When lightly soiled, wipe with a
sponge or
soft lint-free cloth
dampened with water.
water.
When heavily soiled, use warm soapy
You can remove scratches from a
Dulso-coated molding by wiping briskly
with the solvent-type cleaner described
earlier. If a ring forms, repeat the procedure
over a larger area, feathering
toward the center of the ring. If the ring
still remains, wipe the whole molding.
Cleaning the Outside of the Windshield
and Wiper Blades
If the windshield is not clear after using
the windshield washer, or if the wiper
blade chatters when running, wax or other
material may be on the blade or
windshield.
Clean the outside of the windshield with
GM Windshield Cleaner, Bon-Ami
Powder@
(GM Part No. 1050011). The
windshield is clean
if beads do not form
when you rinse it with water.
If you use a glass treatment or conditioner
containing ethyl alcohol or ethyl sulfate
on your glass, be sure to remove the
acrylic roof panel, if
so equipped. These
products may damage the panel.
Clean the blade by wiping vigorously
with a cloth soaked in full strength
windshield washer solvent. Then rinse the
blade with water.
Wiper blades should be checked on a
regular basis and replaced when worn.
Cleaning a Removable Roof Panel
Special care is necessary when cleaning,
removing and/or storing the roof panel.
Flush with water to remove dust and
dirt, then dry the panel.
Cleaner (GM Part
No. 1050427) or
a liquid household glass cleaner.
Leave the cleaner on the panel for
one minute, then wipe the panel with
a
soft, lint-free cloth.
Clean the panel with GM Glass
Don’t use abrasive cleaning materials.
If water drops are frequently allowed to
dry on the roof panel, impurities in the
water will adhere to the top, These
impurities may destroy the finish. When
the panel gets wet, you should dry it
off.
Do not use a glass treatment or
conditioner containing ethyl alcohol
or ethyl sulfate on the roof panel.
These products may damage the
panel.
213..

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
Cleaning the Outside of Your
Corvette
The paint finish on your vehicle provides
beauty, depth of color, gloss retention and
durability.
Washing Your Vehicle
The best way to preserve your vehicle’s
finish is to keep it clean by washing it
often with lukewarm or cold water.
Don’t wash your vehicle in the direct rays
of the
sun. Don’t use strong soaps or
chemical detergents. Use liquid hand,
dish or car washing (mild detergent)
soaps. Don’t use cleaning agents that
are petroleum-based, or contain acid or
abrasives. All cleaning agents should be
flushed promptly and not allowed to dry
on
the surface, or they could stain. Dry
the finish with a soft, clean chamois or a
100% cotton towel to avoid surface
scratches and water spotting.
High pressure car washes may cause
water to enter your vehicle.
. . .214
NOTICE:
Conveyor systems on some
automatic car washes may damage a
Corvette. They may not have enough
clearance for the undercarriage or for
the extra wide rear tires on ZR-1
models. Check with the manager
before using a car wash.
Finish Care
3ccasional waxing or mild polishing of
your Corvette may be necessary to
-emove residue from the paint finish.
You
:an get GM approved cleaning products
?ram your dealer. (See “Appearance Care
ind Materials” in the Index.)
Your Corvette has a “basecoat/clearcoat”
Jaint finish. The clearcoat gives more
lepth and gloss to
the colored basecoat.
4lways use waxes and polishes that are
lon-abrasive and made for a
>asecoat/clearcoat paint finish.
NOTICE:
Machine compounding or aggressive
polishing on a basecoat/clearcoat
paint finish may dull the finish or
leave swirl
marks,
Cleaning Your Convertible Top
Your convertible top should be cleaned
often. If you use an automatic car wash,
use one with water jets and hanging
cloths.
When you hand wash the top, do it in
partial shade. Vacuum away any dust and
other material. Use a mild soap,
lukewarm water and a soft sponge.
A
chamois or cloth may leave lint on the
top, and a brush can chafe the threads in
the top fabric. Don’t use detergents, harsh
cleaners, solvents or bleaching agents.
When you clean
the top, put one hand
under it to support
it. Wet the entire
vehicle and wash the top evenly to avoid
spots or rings. Let the soap remain on the
fabric for a few minutes. When the top is
really dirty, use a mild foam-type cleaner.
Thoroughly rinse the entire vehicle,
then
let the top dry in direct sunlight.

Downloaded from www.Manualslib.com manuals search engine Fuses and Circuit
Breakers
The wiring circuits in your vehicle are
protected from short circuits by a
combination of maxi-fuses, mini-fuses
and circuit breakers. This greatly reduces
the chance of fires caused by electrical
problems.
There are three fuse centers on your
vehicle. One
is in the right side of your
instrument panel. Turn the knob and pull
the door to access the fuses. The other
two fuse blocks are in the
engine compartment. One is part of the
Forward Lamp wiring harness
(A), and
the other is part of the ECM-Engine
wiring harness
(B).
Look at the silver-colored band inside
the fuse. If the band is broken or melted,
replace the fuse. Be sure you replace a
bad fuse with a new one of the correct
size.
If you ever have a problem on the road
and don’t have a spare fuse, you can
borrow one of the correct value. Just pick
some feature of your vehicle that you can
get along without
- like the radio or
cigarette lighter
- and use its fuse, if it
is the size you need. Replace it as soon
as you can.
Headlights
The headlight wiring is protected by a
circuit breaker
in the switch. An electrical
overload will cause the lights to go on and
off, or in some cases to remain
off. If this
happens, have your headlight wiring
checked right away.
Windshield Wipers
The windshield wiper motor is protected
by a circuit breaker and a fuse. If the
motor overheats due to heavy snow, etc.,
the wiper will stop until the motor cools.
If the overload is caused by some
electrical problem and not snow, etc.,
be sure to get
it fixed.
Power Windows and Other Power
Options
Circuit breakers protect the power
windows and other power accessories.
When the current load is too heavy,
the circuit breaker opens and closes,
protecting the circuit until the problem
is fixed or goes away.
II
219 ...

Downloaded from www.Manualslib.com manuals search engine INSPECTION
OR SERVICE
I WHAT SHOULD BE DONE
Manual Transmission
Inspect the complete system. Inspect brake lines and hoses for proper hookup, binding, leaks,
Brake System Check the gear lubricant level in the rear axle and add
if needed. See “Rear Axle” in the Index.
Rear Axle Service Check the transmission fluid level;
add if needed. See “Manual Transmission” in the Index.
Inspection cracks, chafing, etc. Inspect disc brake pads
for wear and rotors for surface condition. Inspect
A fluid loss may indicate a problem. Check the system and rep\
air
if needed.
A fluid loss may indicate a problem. Check the axle and repair it
if needed.
other brake parts, including calipers, parking brake, etc. You may need to have your brakes
inspected more often if your driving habits or conditions result in frequent braking.
NOTE: A low brake fluid level can indicate worn disc brake pads whi\
ch may need to be
serviced. Also, if the brake system warning light stays on or comes on, something may be
wrong with the brake system. See “Brake System Warning Light” in the Index.
If your anti-lock
brake system warning light stays on or comes on, something may be wrong with the anti-lock
brake system. See
“ Anti-Lock Brake System Warning Light” in the Index.
I 1
243. . .

Downloaded from www.Manualslib.com manuals search engine Index
Bulb Replacement Front Turn Signal
............. 197
Headlights
.................. 195
Rear Cargo Compartment Light
. . 200
Rear Turn Signal and Taillight
... 197
Sidemarker
.................. 199
Bulbs. Halogen
................. 195
Bulbs. Replacement
............. 223
Capacities and Specifications
...... 224
Care of Safety Belts
............. 212
Canadian
Roadside Assistance
... 255
Carbon Monoxide
............... 59
Cassette Tape and Compact Disc
Player. AM/FM Stereo with
..... 11 5
Cassette Tape Player. AM/FM
Stereo with
.................. 113
Cassette Tape Player. Care of Your
. 11 7
Center Console
.................. 72
Chains. Tire
................... 209
Changing a Flat Tire
............. 159
Changing System Light
........... 94
Checking Things under the
Hood
....................... 175
Checking Your Restraint Systems
... 33
Chevrolet Roadside
Chevrolet Service Publications
Check
Gauges Light
.............. 93
Chemical Paint Spotting
.......... 2 16
Assistance
.................. 255
(Ordering Information)
........ 258 Child
Restraints
................. 29
Passenger Seat
................ 30
Top Strap
.................... 29
Children (Safety Belts)
............ 28
Children. Larger (Safety Belts)
..... 3 1
Cinch Feature. Lap Belt ........... 21
Circuit Breakers. Fuses and
....... 219
City Driving
................... 134
Cleaner. Air
................... 182
Cleaning Convertible Top
.............. 2 14
Dulso-Coated Moldings
........ 2 13
Fabric
...................... 211
Glass
....................... 213
Hardtop. and Storage of
........ 21 5
Inside of Your Corvette
........ 210
Instrument Panel. Top of
....... 2 12
Leather
..................... 2 12
Outside of Your Corvette ....... 214
Problems. Special
............. 2 1 1
Removable Roof Panel ......... 2 13
Soft-Touch Surfaces
........... 2 12
Speaker Covers
.............. 2 12
Tires ....................... 215
Vinyl
....................... 212
Windshield and
Cigarette
Lighter
................ 76
Engine
..................... 215
Wiper Blades
.............. 213
Climate Control. Automatic
Electronic
................... 108 Zlock.
Setting the
............... 113
Zluster. Instrument
............... 80
Clutch. Hydraulic ............... 187
Comfort Controls
............... 106
Comfort Controls and Audio
Systems
.................... 105
Compact Disc Player. AM/FM
Stereo with Cassette Tape and
... 115
Compact Discs. Care
of Your ....... 118
Compact Disc. To Play a
......... 116
Compact Spare Tire
............. 169
Compartments. Storage and
........ 72
Concealed Headlights
............ 67
Console. Center
................. 72
Control of a Vehicle
............. 124
Control. Loss of
................ 130
Controls Air Conditioner
.............. 106
Brightness
................... 67
Comfort
.................... 106
Cruise ....................... 64
Features and
.................. 35
Seat
......................... 12
Convertible Hardtop
............. 100
To Install Your
............... 103
To Remove Your
............. 100
Convertible Top
................. 96
Cleaning Your
............... 214
To Lower Your
................ 96
To Raise Your
................. 99
Convex Outside Mirror
........... 69
... 262

Downloaded from www.Manualslib.com manuals search engine Index
Engine Running
.................. 58. 59
Starting Your
................. 47
andthe
..................... 230
Extended Mobility Tires
......... 205
Extender. Safety Belt
............. 33
Fabric Protection
.............. 21 1
Fan Control Buttons
............. 106
Features and Controls ............ 35
Fiberglass Springs
.............. 2 16
Filling Your Tank
............... 174
Finish Care (Paint)
.............. 214
Finish Damage (Paint)
........... 2 15
Flashers. Hazard Warning
........ 142
Flat Tire. Changing a ............ 159
Flat Tire. Storing a
.......... 167. 168
Flat. If a Tire Goes
.............. 159
Fluid
Automatic Transmission
....... 184
Manual Transmission
.......... 186
Power Steering
............... 191
Recommended
............... 244
Windshield Washer
........... 192
Fog Lights
..................... 68
Foreign Countries. Fuels in
....... 174
Foreign Material Paint Damage
.... 21 5
Forward Lamp Fuse Block ........ 222
Freeway Driving
............... 134
... 264
Environment. Your Vehicle
Exhaust. Engine
................. 59 Front
Map Lights
................... 68
Seat. Manual
................. 12
Towing Hook-ups
............. 148
Fuel
......................... 173
Fuels in Foreign Countries
........ 174
Fuse Block FuelGage
...................... 83
ECM Engine
................. 222
Forward Lamp
............... 222
Instrument Panel
............. 220
Fuses and Circuit Breakers
..... 219
Gasolines for Cleaner Air
....... 173
Gauges Engine Coolant Temperature
..... 89
Engine Oil Pressure
............ 91
Engine Oil Temperature
......... 92
Fuel
........................ 83
Readings. Numeric
............. 83
Warning Lights and Indicators
.... 82
Glass ......................... 213
GM Participation in BBB Auto Line
-
Markings .................... 82
Alternative Dispute Resolution
Program
.................. 253
Halogen Bulbs
............... 195
Hardtop. Cleaning and Storage of
. . 215
Hardtop. Convertible
............ 100
Hatch Release. Remote ........... 41 Hazard Warning Flashers
......... 142
Headlights
..................... 67
Headlight Doors
................. 67
Headlight High/Low Beam
........ 62
Heater. Engine Coolant (Block)
..... 50
Heating ....................... 107
Highway Hypnosis
.............. 135
Hill and Mountain Roads ......... 136
Hood Release
.................. 175
Hood. Checking Things under the
. . 175
Hook.Ups. Front Towing
......... 148
Hook.Ups. Rear Towing
......... 149
Horn
.......................... 60
How to Add Coolant to the
Coolant Recovery Tank
........ 153
How To Add Coolant to the
Coolant High Fill Reservoir
............. 154. 157
Hydraulic Clutch
............... 187
Hydroplaning
.................. 133
Hypnosis. Highway
............. 135
Identification Number. Vehicle
.... 218
Idling. Rovgh
...... : ............ 50
If a Tire Goes Flat .............. 159
If You’re Stuck: In Sand. Mud. Ice or Snow
.................... 169
Ignition Switch
.................. 46
Inflation
- Tire Pressure .......... 206
Inside Daymight Rearview
Mirror
....................... 69

Downloaded from www.Manualslib.com manuals search engine Instrumeqt Cluster ............... 80
Instrument Panel ................ 78
Instrument Panel Fuse Block
...... 220
Topof
...................... 212
Interior Lights
.................. 68
Jump Starting
................. 143
1 Instrument Panel. Cleaning the
Key in the Ignition (Theft)
....... 43 .
Key Release Button .............. 47
Keyless Entry System. Passive
..... 38
Keys
.......................... 36
Lane Change Indicator.
Turn Signal and
............... 61
Lap Belt Cinch Feature
........... 21
Lap-Shoulder Belt (Safety Belts) .... 20
Larger Children (Safety Belts)
...... 31
Latches. Seatback ................ 13
Leaving Your Vehicle ............. 38
Leaving Your Vehicle with the
Engine Running
............... 58
Lighter. Ashtray and .............. 75
Lights
Air Bag Readiness ............. 24
Anti-Lock Brake System
Active
..................... 86
Anti-Lock Brake System Warning
................... 85
ASR Active .................. 87 Lights
ASR
Off ..................... 86
ASR System Warning
.......... 86
Brake System Warning
.......... 84
Bulb Replacement
............ 195
Charging System
.............. 94
Check Gauges
................ 93
Courtesy
..................... 68
Daytime Running
.............. 68
Door Ajar .................... 94
Fog
......................... 68
Front Map
.................... 68
Gauges and Indicators. Warning
................... 82
Interior
...................... 68
Low Coolant
.................. 93
Low Oil
..................... 93
Low Tire Pressure Warning
...... 87
Malfunction Indicator Lamp
..... 91
Parking Brake Indicator
......... 85
One to Four .................. 55
Operation of .................. 66
Passive Keyless Entry
.......... 95
Safety Belt Reminder
........... 19
Security
..................... 96
Service Engine Soon
........... 91
Service LTPWS
............... 89
Service Ride Control
........... 95
Lights On Reminder
.............. 67
Limited-Slip Rear Axle
........... 56
Loading Your Vehicle ........... 202 Locks
Door
........................ 37
Power Door
.................. 38
Loss of Control
................ 130
Low Coolant Light
............... 93
Low Oil Light
.................. 93
Low Tire Pressure Warning
System
...................... 87
Lubricants. Recommended
....... 244
Maintenance Inspections. Periodic
.......... 242
Record
..................... 247
Schedule
.................... 229
Services. Scheduled
........... 231
Malfunction Indicator Lamp
..... 91
Front Seat
.................... 12
Reclining Seatbacks
............ 13
Transmission
................. 53
Transmission Fluid
............ 186
Map Lights. Front
............. 68
Master Cylinder. Brake
.......... 193
Mirrors
Convex Outside
............... 69
Inside Daymight Rearview
...... 69
Power Remote Control
.......... 69
Visor Vanity. Covered
.......... 75
Monitor. Engine
Oil Life .......... 94
Manual
265 .
.