transmission oil CHEVROLET CORVETTE 1994 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine How long should you keep the coolant
heater plugged in? The answer depends
on the weather, the kind of
oil you have,
and some other things. Instead of trying
to list everything here, we ask that you
contact your Chevrolet dealer in the area
where you’ll be parking your vehicle. The
dealer can give you the best advice for
that particular area.
. i:,
Automatic Transmission
There are several different positions for
your shift lever.
P (Park)
This locks your rear wheels. It’s the best
position to use when you start your
engine because your vehicle can’t move
easily. Ensure the shift
lever is fully in
“P”
(Park) range before starting the engine.
Your Corvette has a brake-transmission
shift interlock. You have to fully apply
your regular brakes before you can shift
from “P” (Park) when the ignition key is
in the “Run” position. If you cannot shift
out of
“P” (Park), ease pressure on the
shift lever
- push the shift lever all the
51 ...

Downloaded from www.Manualslib.com manuals search engine Here you will find information
about the care of your Corvette
.
This part begins with service
and fuel information. and then it
shows how
to check important
fluid and lubricant levels
. There
is also technical information
about your vehicle. and a section devoted
to its
appearance care
.
Part 6
Service & Appearance Care
Service ........................................................
Fuel ..........................................................
Checking Things under the Hood ...................................
HoodRelease .................................................
Engineoil .................................................
Aircleaner ........................... ...................
Automatic Transmission Fluid ..................................
Manual Transmission Fluid ......................................
Hydraulic Clutch ...............................................
RearAxle ....................................................
Enginecoolant ................................................
Power Steering Fluid ...........................................
Windshield Washer Fluid ........................................
Brake Master Cylinder ..........................................
Battery ......................................................
Bulb Replacement ...............................................
Windshield Wiper Blades ..........................................
Tires ..........................................................
Appearancecare ................................................
Appearance Care Materials Chart ...................................
Vehicle Identification Number (VIN) ................................
Service Parts Identification Label ...................................
Add-on Electrical Equipment ......................................
Fuses and Circuit Breakers ........................................
Replacement Bulbs ..............................................
Capacities and Specifications ...................................
LoadingYourVehicle ............................................
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171 ..

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
When you open the hood, you'll see:
1. Hydraulic Clutch Fluid Reservoir (if
2. Brake Fluid Reservoir
equipped)
. . .I76
1
Before closing the hood, be sure all
the filler caps are on.
'*?-
5.7L LTI (Code P)
3. Battery
4. Electrical Engine Fan
5. Air Cleaner
6. Coolant Recovery Tank
7. Power Steering Fluid Reservoir
8. Engine Oil Fill Cap
9. Engine Oil Dipstick
10. Windshield Washer Fluid Reservoir
11. Coolant High Fill Reservoir
12. Automatic Transmission Dipstick
(if equipped)
I

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5.
0
0
Reverse the steps.
Align the tabs
to the slots in the
bottom of the assembly before you
replace it.
Install the short knob into the middle
hole first. Then install the longer
knobs into the outer holes.
Automatic Transmission Fluid
When to Check and Change
4 good time to check your automatic
:ransmission fluid level is when the
mgine oil is changed. Refer to the
Maintenance Schedule to determine when
co change your fluid. See “Scheduled
Maintenance Services” in the Index.
How to Check
Because this operation can be a little
iifficult, you may choose to have this
done at a Chevrolet dealership Service
Department.
[f you do it yourself, be sure to follow all
the instructions here, or you could get a
false reading on the dipstick.
NOTICE:
Too much or too little fluid can dam-
age your transmission.
Too much can
mean that some of the fluid could
come out and fall
on hot engine parts
or exhaust system, starting a fire. Be
sure to get an accurate reading if you
check your transmission fluid. Wait
at least 30 minutes before checking
the transmission fluid level if you have
been driving:
0 When outside temperatures are above
0 At high speed for quite a while.
0 In heavy traffic - especially in hot
To get the right reading, the fluid should
be at normal operating temperature, which is
180°F to 200°F (82°C to 93°C).
To check transmission fluid hot: Get
the vehicle warmed up by driving
about
15 miles (24 km) when outside
temperatures are above
50°F (10°C). If
it’s colder than
50°F (10°C)’ drive the
vehicle in
“D’ (Third Gear) until the
engine temperature gage moves and then
remains steady for ten minutes. Then follow the hot check procedures.
To check transmission fluid cold: A cold
check is made after the vehicle has been sitting for eight hours or more with the
engine
off and is used only as a reference.
Let the engine run at idle for five minutes
if outside temperatures are 50” F ( 1 OOC)
or more. If it’s colder than 50°F ( 10°C)’
you may have to idle the engine longer.
Should the fluid level be low during a
90°F (32°C).
weather.
. . .184

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I EoA7 I
POWER WINDOW
lu
D
.
Instrument Panel Fuse Block
1 - A/C Module (5 Amp)
2 - Blank
3 - Windshield WiperNVasher Switch
4 - Radio Receiver Box (Ignition)
5 - Heated Mirrors (5 Amp.)
6 - Taillight, Daytime Running Lights
Module (15 Amp.)
Assembly
(30 Amp.)
(5 Amp.)
7 - Horn Relay
(15 Amp.)
*Export Horn
(20 Amp.)
8 - Hazard Flashers; Brake Switch
(20 Amp.)
9 - Crank-Air Bag (5 Amp.)
10 - Crank-Parmeutral Shitch
(Automatic); Clutch (Manual)
(5 Amp.)
11 - RH Illumination (5 Amp.)
12 - LH Illumination (5 Amp.)
13 - Console Illumination (5 Amp.)
14 - Fuel Pump 1 (10 Amp.)
15 - Fuel Pump 2 (LT5) (IO Amp.)
16 - Central Control Module; Daytime
Running Lights Module
(5 Amp.)
17 - Generator; Vacuum Pump (LT5);
Valet Mode (LT5); EGR Circuit
(LT5); Oxygen Sensors (LT5)
(10 Amp.)
and A/C Control Head; Heater and
A/C Programmer; Rear Defog
Relay
(10 Amp.)
19 - Utility Plug (15 Amp.)
20 - Heated Oxygen Sensors (LT1)
(15 Amp.)
21 - Fuel Pump Relay Coil #2 (LT5);
Selective Ride Control Module;
ABS Module; Transmission Clutch
Control Switch (Automatic);
Air Pump Relay; Diverter Valve;
Secondary Bypass Valve (LT5)
(10 Amp.)
22 - Injectors #1,4,6,7 (LT1); Primary
Injectors #1-8 (LT5); Ignition Coil
Module (LT5); Ignition Coil Plate
Connector (LT5) (10 Amp.)
18 - A/C Compressor Clutch; Heater
. . .220

Downloaded from www.Manualslib.com manuals search engine 23 - Injectors #2, 3, 5, 8 (LTI);
Secondary Injector Relays (#1,2
(LT5); Secondary SF1 Control
Modules (LT5)
(10 Amp.)
24 - Turn Signal Flashers (10 Amp.)
25 - Ignition Coil and Ignition Coil
26 - Passive Keyless Entry Module
27 - Instrument Cluster; Driver Module (10 Amp.)
(5 Amp.)
Information Center; Air Bag Derm; Acceleration Slip Regulation
Switch
(15 Amp.)
Transmission Position Switch; One
to Four Shift Solenoid
(10 Amp.)
29 - Primary Cooling Fan Relay Coil;
Secondary Cooling Fan Relay Coil
28 - Backup Lights Switch;
(5 Amp.)
30 - Direct Ignition Module; Camshaft Sensor; Canister Purge Solenoid;
Throttle Position Sensor Buffer
Module; EGR Circuit (LT1);
31
32
Secondary Air Inlet Solenoid
(LT5); Electronic Ignition Control
Module (LT5); One to Four Shift
Relay
( 10 Amp.)
Power Mirror Adjuster Control;
Lighted Rearview Mirror; Visor
Vanity Mirrors
(5 Amp.)
Cruise Control Engage Switch;
Daytime Running Lights Module;
Low Tire Pressure Warning
Module
(5 Amp.)
33 - Engine Control Module (5 Amp.)
34 - Air Bag System (15 Amp.)
35 - Central Control Module (5 Amp.)
36 - Footwell Courtesy Lights; Door
Courtesy Lights; Glove
Compartment Lights; Lighted
Rearview Mirror
(5 Amp.)
37 - Bose Amplifier Relay; Power
Antenna Relay; Cargo
Compartment Lights
(20 Amp.)
Relay
(5 Amp.)
38 - LCD; Tone Generator; Dome Light
39 - Central Control Module (5 Amp.)
40 - Radio Receiver Box (Battery);
Radio Control Head; Passive
Keyless Entry Module
(5 Amp.)
41 - Sport Seat (10 Amp.)
42 - Power Door Lock Switches; Driver
Information Center; Passive
Keyless Entry Module
(20 Amp.)
43 - A/C Programmer (5 Amp.)
44 - Cigar Lighter; Accessory Plug
45 - Hatch or Deck Lid Release Relay
K - Power Seats (30 Amp. Circuit
L - Blank
M - Power Windows (30 Amp: Circuit
N - Blank
P - Blank
(15 Amp.)
(25 Amp.)
Breaker)
Breaker)
221 . I

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
Section A: Scheduled Maintenance Services (Cont.)
Schedule I
Follow Schedule I if your vehicle is
MAINLY driven under one or more of
the following conditions:
0 When most trips are less than 4 miles
(6 km).
When most trips are less than 10 miles
(16 km) and outside temperatures
remain below freezing.
0 When most trips include extended idling and/or frequent low-speed
operation, as in stop-and-go traffic.
0 When operating in dusty areas.
Schedule
I should also be followed if the
vehicle
is used for delivery service. police,
taxi or other commercial applications.
* An Emission Control Service.
t The U.S. Environmental Protection Agency
or the California Air Resources Board has
determined that the failure to perform this
maintenance item will not nullify the emission warranty or limit recall liability prior to the
completion
of vehicle usefil life. General
Motors, however, urges that all recommended
maintenance services be performed at the
indicated intervals and the maintenance be
recorded in “Section E: Maintenance Record.”
WHAT TO SERVICE
See “Explanation of Scheduled
Schedules
I and II.
ITEM NO. Maintenance Services” following
WHEN TO PERFORM
Miles (kilometers) or Months
(whichever occurs first).
I I
1 I Engine Oil and Filter Change* 1 Every 3,000 miles (5 000 km) or 3 months.
2 I Chassis Lubrication I Every other oil change.
3
Cooling System Service” 4
Engine Adkessory Drive Belt Inspection
Every 30,000 miles (50 000 km) or 24 months.
5 I Transmission Service I
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
6
7
Every 100,000 miles (166 000 km).
Spark Plug Replacement*
Every
30,000 miles (50 000 km).
Spark flug Wire Inspection*?
8 I Air Cleaner Filter Replacement* I
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
9 I Fuel Tank, Cap and Lines Inspection*t Every 30,000 miles (50 000 km).
. . .232

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
Section A: Scheduled Maintenance Services (Cont.)
Schedule /I
Follow Schedule I1 ONLY if none of
the driving conditions specified in
Schedule
I apply.
* An Emission Control Service.
t The US. Environmental Protection Agency
or the California Air Resources Board has
determined that the failure to perform this
maintenance item will not nullify the emission
warranty or limit recall liability prior to the
completion
of vehicle useful life. General
Motors, however, urges that all recommended
maintenance services be performed at the
indicated intervals and the maintenance be
recorded in “Section E: Maintenance Record.”
. . ,234
ITEM NO.
2
3
4
5
6
-
-
7
8
-
9 -
WHAT TO SERVICE
See “Explanation of Scheduled
Maintenance Services” following
Schedules
I and II.
WHEN TO PERFORM
Miles (kilometers) or Months
(whichever occursfirst).
Engine Oil Change* Every 7,500 miles (12 500 km) or 12 months.
Oil Filter Change* At fist and every other oil change.
Chassis Lubrication Every
7,500 miles (12 500 krn) or 12 months.
Engine Accessory Drive Belt Inspection
Cooling Svstem Service* Every
30,000 miles (50 000 km) or 24 months.
Transmission Service
I
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
Spark Plug Replacement* Every 100,000 miles (166 000 km).
Spark Plug Wire
Inspection*t Every 30,000 miles (50 000 km).
Air Cleaner Filter Replacement* I
See
“Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
Fuel Tank, Cap and Lines Inspection*t I Every 30,000 miles (50 000 km).

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
C L Section A: Scheduled Maintenance Services (Cont.)
Explanation of Scheduled
Maintenance Services
Following are explanations of the services
listed in Schedule I and Schedule
11.
The proper fluids and lubricants to use are
listed in Section D. Make sure whoever
services your vehicle uses these. All parts
should be replaced and all necessary
repairs done before you or anyone else
drives the vehicle.
NOTE: To determine your engine’s
displacement and code, see
“Engine Identification” in the
Index.
ITEM
NO. SERVICE
1 Engine Oil and Filter Change* -
Always use SH or SG Energy
Conserving I1 oils of proper
viscosity. The engine requires a
special oil meeting GM Standard
GM4718M. Oils meeting this
Standard may be identified as
synthetic, and should also be
identified as API Service
SH or
SG. However, not all Synthetic
API Service
SH oils will meet
ITEM
NO. SERVICE
this GM Standard. You should
look for and use only an oil that
meets GM Standard GM4718M.
To determine the preferred
viscosity for your vehicle’s
engine (e.g.,
SAE 5W-30 or SAE
10W-30), see “Engine Oil” in
the Index.
Your vehicle has an Engine Oil
Life Monitor. This monitor will
show you when to change the oil
- usually between 3,000 miles
(5 000 km) and 7,500 miles
( 12 500 km) since your last oil
change. Under severe conditions
the indicator may come on before
3,000 miles
(5 000 km). Never
drive your vehicle more than
7,500 miles (12
500 km) or 12
months without an oil change.
The system won’t detect dust in
the oil..
So if you drive in a dusty
area be sure
to change your oil
every 3,000 miles
(5 000 km) or
sooner if the “Change Oil” light
comes on.
ITEM
NO.
2
3
4
SERVICE
Remember to reset the Oil Life
Monitor when the oil has been
changed. For more information, see “Engine Oil Life Monitor”
in the Index.
Chassis Lubrication
- Lubricate
suspension and steering linkage.
Lubricate the transmission shift
linkage, and parking brake cable guides, underbody contact points
and linkage.
Engine Accessory Drive Belt(s) Inspection
- Inspect the belt(s)
for cracks, fraying, wear and
proper tension. Replace as needed. (Belts can have many
small cracks in individual ribs
without affecting performance.)
Cooling System Service*
-
Drain, flush and refill the system with
new or approved recycled
coolant conforming to GM
Specification 1825M. Keep
coolant at the proper mixture as
specified. See “Coolant” in the
* An Emission Control Service.
. . .236

Downloaded from www.Manualslib.com manuals search engine ITEM
NO. SERVICE
Index. This provides proper
freeze and boil protection,
corrosion inhibitor level and
maintains proper engine
operating temperature.
Inspect hoses and replace if
they are cracked, swollen or
deteriorated. Tighten screw-type
hose clamps. Clean the outside of
the radiator and air conditioning
condenser. Wash the pressure cap
and neck.
To help ensure proper operation,
we recommend a pressure test of
both the cooling system and the
pressure cap.
5 Transmission Service - For
manual transmissions, fluid
doesn’t require changing. See
“Periodic Maintenance
Inspection.”
For automatic transmissions,
change both the fluid and filter
every
15,000 miles (25 000 km)
ITEM
NO. SERVICE
if the vehicle is mainly driven
under one or more of these
conditions:
In heavy city traffic where the
outside temperature regularly
reaches
90 OF (32 O C) or
higher.
In hilly or mountainous
terrain.
Uses such as found in taxi,
police car or delivery service.
If you do not use your vehicle
under any of these conditions,
change both
the fluid and
filter every
100,000 miles
(1 66 000 km).
Replace spark plugs with the
proper type. See “Replacement
Parts” in the Index.
6 Spark Plug Replacement* -
7 Spark Plug Wire Inspection*? -
Inspect for burns, cracks or other
damage. Check the boot fit at the
coils and at the spark plugs.
Replace wires as needed.
ITEM
NO. SERVICE
8 Air Cleaner Filter Replacement*-
Replace every
30,000 miles
(50 000 km) or more often under
dusty conditions. Ask your dealer
for the ’proper replacement inter-
vals for your driving conditions.
Inspection*?
- Inspect fuel tank,
cap and lines (including fuel rails
and injection assembly) for
damage or leaks. Inspect fuel cap
gasket for an even filler neck
imprint or any damage. Replace
parts as needed. Periodic replace-
ment of the fuel filter is not
required.
9 Fuel Tank. Cap and Lines
* An Emission Control Service.
t The U.S. Environmental Protection Agency
or the California Air Resources Board has
determined that the failure to perform this
maintenance item will not nullify the emission
warranty or limit recall liability prior to the
completion
of vehicle useful life. General
Motors, however, urges that all recommended
maintenance services be performed at the
indicated intervals and the maintenance be
recorded in “Section
E: Maintenance Record.”
I -I
237. . .