check engine light CHEVROLET CORVETTE 1993 4.G Owner's Manual

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Freeway Driviing
Mile--for mile, .freeways (also called
thruways,
parkways, -expressways,
turnpikes,'
or superhighways) are the
safest of all roads. But they have their
own specid rules.
The most important advice on freeway
driving is: Heep.up with tretffic and keep
to the right. Drive at the same speed
most of the ,ot.her drivers are driving-.
Too-fast :or too-slow driving breaks a
mo'oth traffic flow. Treat the left €me
on a :freeway as :a passing lane.
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Entering the Freeway
At the entrance 'there' is usually a ramp
that l;md$ to the freeway. .If you' have a
clear view of the h.my as you drive
along thr: entrance ramp, you .shmild
begin to c.heclr. trdfic. Try to determine
where. you expect to- blend with the
flav. If traffic is light, you may have no
problem. But if it -is heavy, hd.a gap as
you move dong the entering lane &id
time pur qpmach. Tryto merge into
the gap at close to ,the prevailing speed.
Switch on yow: turn signal, check your
rearview mirrors .as you move along,
and.glmce .over your shoulder as often
as necessary. 'Try to blend smoothly
with the. traffic fluw.
DrJvfng on the Freeway
Once you are on the freeway, adjust
your speed
to the posted limit or to,the
prekbg rate if it's slower. Stay in
right fane unless you want to pass. If
you are ma two-lme freeway; treat the
right lane as the sbw lane and the,left
lane the passing lane.
If you are on a thee-lane freeway, treat
the right-
lane as the. slower-speed
through lane, the middle €ane as the
higherdpeed through lane, and the left
lane -as the passing .. lane.
Before changing lanes, check your
rearview minors. Then use YOU turn
signal. Just before you I-cave-the lane,
glance
quickly over pw shoulder to
make sure there isn't another vehicle in
your "blind" spot.

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Driving a Long Distance
Although most long trips today are
made on freeways, there are still many
made
on regular highways.
Long-distance driving
on freeways and
regular highways is the same in some
ways. The trip has to be planned and
the vehicle prepared, you drive at
higher-than-city speeds, and there are
longer turns behhd the wheel. You’ll
enjoy your
trip more if you and your
vehicle
are in good shape. Here are
some.fips for
a successful long trip.
Before Leaving on a Long Trip
Make sure you’re ready. Try to be well
rested.
If you must start when you’re
not fresh-such as after
a day’s work-
don’t plan to
make too many miles that
first part of the journey. Wear
comfortable clothing and shoes you
can
easily drive in.
Is your vehicle ready for a long trip? If
you keep it serviced and maintained, it’s
ready to
go. If it needs service, have it
done before starting
out. Of course,
you’ll find experienced and able service
experts in Chevrolet dealerships all
across North America. They’ll be ready
and willing to help if you need it. Here
&e some
things you can check
before
a trip:
Windshield Washer Fluid: .Is the
reservoir full? Are ,all windows
clean
inside and outside?
shape?
you checked all levels?
lenses clean?
safe, trouble-hee trip. Is the tread
good enough for lofig-distance
drivhg? Are the tires all inflated to
the recammended pressure?
weather outlook
along your route?
Should you delay your trip a
short
time to avoid a major storm system?
0 Maps: Do you have up-to-date maps?
Wiper Blades: Are they in good
Fuel,, Enme Oil, Other Fluids: Have
Lights: Are they all working? Are the
Tires: They are vitally important to a
Weather Forecasts: What’s the
193

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On She Road
Uidess you are the -only driver, it is good
to share the driving task with others.
Limit turns behind
the wheel to about
100 miles (160 km) Or two hours at a
sitting.-Then, either change drivers ar
stop for some rdreshment like coffee,
tea or
soft drinks and some limbering
up.
But do stop and move around. Eat
lightly along the way. Heavier meals
tend to
mdke some people sleepy.
On two-lane highways or
undivided
multilane highways that do not have
controlled .access,.you’ll
wmt to watch
for some situations :not usustlly found
on freeways. Examples: are: stop signs
and signals, shopping tenters with
direct access
to the highway, no passing
zones and school zones, vehicles
turning
le& and- right off the-road,
pedestrians, cyclists, parked vehicles, and even a&&.
Highway Hypnosis
Is thete-actually such a condition as
“highway hypnosis”? Or
is it just plain
falling asleep at the wheel? Call it
highway hypnosis, lack
of awareness, or
whatever.
There is
something about an easy
stretch
of road with the same scenery,
along with the
hum of the tires on the
road, the drone of the engine; and the
rush of the wind against the vehicle that
can make you sleepy. Don’t let it
happen
to you! If it does, your vehicle
can leave the road in less than a
second, and you could crash and be
injured.
What can you do about highway
hypnosis? First, be aware that it can
happen.
Then here
are some tips:
4 Make sure your vehicle is well
ventilated,
with a comfortably cool
interior.
Keep your eyes moving. Sca.n the road
ahead and
-to the sides. Check your
rearview mirrors frequently and your
instruments from time to time. This
can help you avoid
a fixed stare.
Wear good sunglasses in bright light.
Glare can cause drowsiness. But
don’t
wear sunglasses at night. They will.
drastically reduce-your,overall.~sion
at the very time you need all the.
seeing power
you have.
If you get sleepy, pull off the road into
a rest, service, &‘parking area and
take a nap, get so.me exercise, or both.
For safety, treat drowsiness on the
highway
as an emergency.
As in any driving situation, keep pace
with traffic and allow adequate
foIlowing distances.

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Leaving your hood open and your
underhood lights on can drain your
battery.
If you need to keep the hood
open for an extended period
of time,
remove the Underhood Lights Fuse.
This 1O-amp fuse is located under the
hood on the left-hand marker light
assembly. See the
Index under Fuses &
Circuit Breakers.
Engine Oil
It's a good.idea to check pur engine oil
level every time you get fuel. In order to
get
an accurate reading, the vehicle
must be on level
ground.
If you have the LTl engine, the best
time
to check your engine oil is when
the
engine is warn. If the engine is
mnning, the engine oil won't drain back
into the pan.
Turn off the engine and
give the oil a few minutes to drain back
into the-oil
pan. If you don't, the oil
dipstick might not show the actual
level. If
you have a ZR-1, the best time to
chegk your engine oil is when
the
engine
is cold. If you run the engine, the
engine oil
won't drain back into the pan
fast enough.
Give the oil two hours to
drain
back into the oil pan. If you don't,
the oil dipstick might not
show the
actual level.
249 .

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Just fill it enough to put' the level
Somewhere in the proper operating
parge-. Push the dipstick all the-way
back in when you're. through.
Your vehic1.e has- a LOW OIL light-on
the Driver InfomaAion Center that
canes on and stays on if your oil. is '/z to
1% quarts low (see t-he Index tilid&
Low Oil Ljght). Do not wait until this
light comes on to check your oil level.
This light is an added reminder
only-you should check your oil level
regularly.
LT1 Engine: Adding .Engine, Oil
CT5 Engine: Adding Engine Oil
What Kind of Oil To Use
'Lo& fcrr Three Things:
GM4718M
Your Corvette engine requires a
special. oil me,et&g GM Standard
GM4718M. Oils meeting this
Standard may be identified as
synthetic,
and should also. be
identified as API Service SG.
However, not all SynthetkAPI
Service SG oils will meet this GM
Standard. You should lo& for and
use only an .oil that meets GM
Stand;ird GM4718M.
25 I

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Improperly aimed headlights can be
dangerous. Periodic headlight. checks
for proper aiming and adjustment are
strongly recommended. Your Chevroket
dealer is well. equip,ped to
provide such
service.
Fog Ught Bulb Replacement
The fog lights can be reached from
under the- front bumper.
1 Remove the hex-head screw using a
7 m hex-head socket.
2. Open the door. Then reach up into
the fog light assembly €or the bulb.
3. Rotate the bulb base eounter-
doclm&e l/s turn. Then pull the bulb
bise out.
from the wiring harness.
reconnect the
wiring h-mess. Cluse
and secure the door.
4. &refully disconnect the bulb base
5. Insert the neq7 bulb -and then
If your fog 'lights become improperly
aimed,
have your Chwrokt dealer aim
tka QQr YOU.

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c-
Electronic Heating and Air
Conditioning
The blower motor for the ,optional
(C683 Automatic Electronic Climate
Control 6yst.em is protected by a 5-amp
underhood- fuse. -See your dealer for
service.
Headlight. Wiring
The headlight wiring is protected by a
circuit breaker in the.Iight switch, An
electrical overload will cause the lights
to go on and off, QT in some cases to
remain o€E. If this happens, have your-
headlight system checked right away.
Windshield. Wipers
The windshield wiper- motor is
protected.
by a circuit breaker and a
fuse. If the rn0to.r overheats due to
heavy snow, etc., the wiper will stop
until the. motor cools. If, the overload is
caused by some electrical problem, 'ham
it
fixed.
Power Windows and Other
Power Options
Circuit breakers in the fuse panel
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.proHern is
fixed.

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Section C: Periodic Maintenance Inspections
Listed below are inspections and services which should be performed at least twice a year (for instance, each spring and fall).
You should let your- GM dealer's service department or other qualified ssvj,cg [email protected] do these j-obs. Make sure any necessary
repairs are completed
at once.
INSPECTION
OR SERVICE
Steering and
Suspension Inspection
Tire and Wheel
Inspection
Exhaust System
Inspection
~-
Rear Axle Service
Brake System
Inspection
WHAT SHOULD BE DOME
Inspect. the front and rear susp-ension and steering system for damaged, loose or missing parts,
signs of wear, or lack of lubrication. Inspect the power steering lines and hoses. for proper
hookup,
bindmg-, leaks, cracks, chafing, etc.
Inspect the tires for uneven wear or damage. If there is irregular or premature wear, check the
wheel alignment. Inspect for damaged wheels.
Inspect the complete exhaust system. Inspect the
body neat the exhaust system. Look for broken,
damaged, missing or out-of-position parts as well as open seams, holes, loose connections, or
other conditions which could cause a heat buildup in the floor pan or could let exhaust fumes
into the- vehicle.
See the Index under Engine Exhaust.
Check:the gear lubricant leve1.h the rear axle and add if needed. See the Index: under Rear Axle.
A fluid loss in this system;may indicate a problem. Check the system and repair it if needed.
Inspect the complete system. Inspect brake lines and
hoses for proper hookup, binding, leaks,
cracks, chafing, etc. Inspect disc brake pads for wear and rotors for surface condition. Inspect
-other brake parts, .hcluding calipers, parking brake, etc. Check parking brake adju\
stment. 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 which 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 the Index under Brake System Warning Light. 'If your anti-lock brake
systemwarning light stays on, comes on or flashes, something may be wrong with the anti-lock
brake system. See the Index under Anti-Lock Brake System Warning Light.

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ABS Active Light ........................... 117
ABS Service Light ........................... 117
ABS Light ......................................... 117
Acceleration Slip Regu’laticin
(ASR) System .......................... 89,. 175
Accessory Wiring . Plug .................... 147
Action Center, Corvette ................... 343
Adding
Brake Fluid
.......... ........... ............ . 27 1
Electrical Equipment ...... 65, 146, 304
Engine Coolant ..... 216, 262,311,3.27
Engine Oil ............................... 250, 31 1
Hydraulic Clatch Fluid’ ......... 260, 3 17
Power Steeting Fluid ............ 269, 318
Rear Axle Fluid ..................... 262, 318
Sound Equipment ........................... 146
Transmission Fluids. ..... 25.9,260, 317
Windshield Washer
Fluid ............................... 84, 269, 3 17
Air .Bag (see Supplemental Inflatable
AirCieaner Filter ..................... 254, 312
.Air Conditioner ....................... 136., ‘142
Alcohol, .Driving Under thi Influence
of ..................................................... 169
Restraint)
Alcohol in Gasoline ......................... 242
Aluminum Wheels
Cleaning
................................ 296. 301
Antenna, Power ............................... 161
Antifreeze ......... 216, 262, 263, 311., 317
Anti-Lock Br.& e
Removing ....................................... 228
System (ABS) ....................... 117? 1-73
Anti-Lock Brake System Light ........ 117
Ashtray and Lighters .......................... 96
ASR Off Light .............................. .... 116
ASR System ................................. 89, 175
Cassette Playek ........................... 149
Music System) ............................ 152
Music System) ............................ 155
Appearance Care .............................. 289
ASR Active Light ............................. 115
Audio Systems ................................. 146
AM/FM Stereo with
.AM/F M. Stereo-with
Cassette Player
(Delco-Base@
AM/FM Stereo with CassetteKD
Player (Delco-Bose*
Care of Audio Systems ................. 160
-Radio Reception. For the Best ...... 159
Setting.the Clock ............................ I48
Automatic Electroriic Climate
Aptomatic
Transmission
Control ........................................... 140
Adding Fluid ................................. 259
Axle, Rea Liniited-Slip ....................... 76
Checking Fluid ................................. 2.56
Shifting., ....................................... 67, 78
&ry ..................................... 205, 272
Jump Starting ..........................?........ 205
Warnings .......................... 205, 206, 272
Battery Warning . Gage ..................... 105
Battery Warning Light ....................... 118
Blizzard ............ ..i.. ........................... 200
Block Heater, Engine ......................... 66
“Blowout, ” Tire .................................. 224
Brake AdjustmenL
..................................... 178
Fluid ...................................... 270, 317
Master Cylinder ............................ 270
Parking ............................................. 77
Pedal Travel .................................... 178
Warning Light .................................. 106
Wear Indicators .............................. 177
351 I..
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Downloaded from www.Manualslib.com manuals search engine Brake System Warning Light .......... 106
Brakes, Anti-Lock ........................... 173
Active Light .................................... 117
Service Light ................................. 117
Braking ............................................. 172
Braking Emergencies ....................... 178
. Anti-Lo.ck Brake System .............. ‘173
Braking Technique ........................... I32
“Break-In, ” New Vehicle .................... 59
Bu&ling Up (see Safe@ Belts)
Bulb ‘Replacement
Back-up Light ................................ 277
Center High-Momte-d
Cornering Lights. ........................... 277
Fog Light ....................in................. 275
‘Rear Cargo Light ........................... 278
Side Marker Lights ....................... 277
Taillight ............................................. 2%
.Turn Signals, Front and Rear ....... 276
Bulbs, Replacement .......................... 514
Cpcities and Specifications ........ 389
Carbon Monoxide in
Exhaust ........................ 59, 79, 80, 2
stop Light ............................. 278: 279
Headlight ........................................ 273
158
Cassette Tape Player
Center
Storage Console ....................... 95
Central Control Module ..................... 120
Chains,
Tire ............................. 236, 288
Changing a .Flat .Tire ........................ 225
Charging System Light ..................... 118
Check . Gauges Light ........................ 108
Checking
Brake Fluid .................................... 270
Engine Coolant ............................... 262
(see Audio Systems)
h@e Oil Level .................... 249, 250
Power Steering Fluid ..................... 269
Rear Axle Fluid .............................. 261
Safety Belt Systems ................... ...,.. 37
Transmission Fluids ...... 257,258, 259
Under the Hood .............................. 245
Ch~d Paint Spotting .................... 303
CMd Restraints .................................. 33
CWhn and Safety Belts ............. 32, 36
Cigarette Lighter ................................. 96
Cinch Fawe .................................... 24
Circuit Breakers & Fuses ................. 305
city, Driving ..................................... 190
Checking Things
8
Cleaner. Air ..................................... 254
Aluminum Wheels ................ 296. 301
Carpet ............................................ 292
Cassette Player
.............................. 160
Compact Discs .............................. 160
Convertible
. Rear Window ....................... 125, 298
Top ............................................... 297
“Dulso”’-Coated Molding ............... 294
~ngine .............................................. 301
Fabric .............................................. 290
Fibeiglass Springs ........................ 303
Finis3l ................................................ .OO
Foreign Material .............................. 302
Glass .............................................. 295-
.Hardtop ......................................... 300
hide of Your Corvette ................. 2510
Instrument Panel .......................... 294
Leather or Vinyl ............................ 293
Outside of Your Corvette .............. 296.
Power Antenna .............................. 161
Removable Roof Panels ................. 297
%oft Touch” Surfaces .................... 293
Special Problems ........................... 292
Cleaning
Safety Belts
.................................... 295