Contents Wiring diagrams Section: Procedures All sections

Maintenance Information Chevrolet Corvette C4

Procedures 10 illustrations ~3403 words

MODEL IDENTIFICATION

Note. This article covers VIN [P] only.

Note. For scheduled maintenance intervals and the related fluid capacities, fluid specifications and labor times for major service intervals, see SCHEDULED SERVICES article in this section. Warranty information and specifications for fluid capacities, lubrication specifications, wheel and tire size, and battery type are covered in this article.

VIN LOCATION

The Vehicle Identification Number (VIN) is located on the left side of the dash panel at the base of the windshield. The VIN chart explains the code characters.

VIN CODE ID EXPLANATION

Numbers preceding the explanations in the legend below refer to the sequence of characters as listed on VIN identification label. See VIN example below.

VIN Code ID Explanation. Scheme 1

Scheme 1: VIN Code ID Explanation

SEVERE & NORMAL SERVICE DEFINITIONS

Note. Use the Severe Service schedule if the vehicle to be serviced is operated under ANY (one or more) of these conditions

Service is recommended at mileage intervals based on vehicle operation. Service schedules are based on the following primary operating conditions

Severe Service

  1. Short Trips (4 Miles Or Less)
  2. Severe Dust Conditions
  3. Hot Weather, Stop-And-Go Driving
  4. Trips Less Than 10 Miles In Freezing Temperatures
  5. Extensive Idling Conditions

Normal Service

  1. Driven More Than 10 Miles Daily
  2. No Severe Service Operating Conditions

Scheme 2

Scheme 2: SERVICE POINT LOCATIONS

Scheme 3

Scheme 3: INFORMATION LABEL LOCATIONS

SERVICE LABOR TIMES

Note. For 1990 and newer vehicles, labor times are provided, where available, within appropriate SERVICE INTERVAL table in SCHEDULED SERVICES article.

WHEEL & TIRE SIZES

Tire sizes are listed on the Tire Information Label located on rear of drivers door. Use only tire combinations listed on the label. Ensure wheel size and offsets match those recommended for the tire in use.

TIRE INFLATION

The tire specification decal is located on rear of the driver's door.

WHEEL TIGHTENING

Tighten wheel lug nuts to 100 ft. lbs. (136 N.m). Tighten compact spare wheel to 80 ft. lbs. (110 N.m).

BATTERY SPECIFICATIONS

CAUTIONWhen battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See the appropriate COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section.
  1. COMPUTER RELEARN PROCEDURES - 1984-90
  2. COMPUTER RELEARN PROCEDURES - 1991-93
  3. COMPUTER RELEARN PROCEDURES - 1994
  4. COMPUTER RELEARN PROCEDURES - 1995
  5. COMPUTER RELEARN PROCEDURES - 1996

SUPPLEMENTAL RESTRAINT SYSTEM (AIR BAG)

Note. See the AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT Section.

Modifications or improper maintenance, including incorrect removal and installation of the Supplemental Restraint System (SRS), can adversely affect system performance. DO NOT cover, obstruct or change the steering wheel horn pad in any way, as such action could cause improper function of the system. Use only plain water when cleaning the horn pad. Solvents or cleaners could adversely affect the air bag cover and cause improper deployment of the system.

WARNINGTo avoid injury from accidental air bag deployment, read and carefully follow all warnings and service precautions. See appropriate AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.

Modification to the air bag system component or wiring can adversely affect system performance and possibly cause injury.

CAUTIONThe Diagnostic Energy Reserve Module (DERM) can maintain enough voltage to cause a deployment of the inflator module for up to 10 minutes after the ignition switch is turned off and the battery is disconnected. Many of the service procedures require disconnection of the inflator module to avoid an accidental deployment.
CAUTIONDisconnect negative battery cable before servicing any air bag system, steering column or passenger side dash component. After any repair, turn ignition key to the ON position from passenger's side of vehicle in case of accidental air bag inflation

AIR CONDITIONING SERVICING

CAUTIONAvoid breathing R-134a refrigerant and PAG lubricant vapors, exposure may irritate eyes, nose and throat. To remove R-134a from system use R-134a recycling equipment that meets SAE J2210 specifications. If accidental system discharge occurs, ventilate work area before resuming service.
WARNINGR-134a service equipment or vehicle A/C systems SHOULD NOT be pressure tested or leak tested with compressed air. Some mixtures of air/R134a have shown to be combustible at elevated pressures. These mixtures are dangerous and may cause fire and/or explosions. See the appropriate A/C SYSTEM GENERAL SERVICING article in the AIR CONDITIONING & HEAT section.

ANTI-LOCK BRAKE SYSTEM

The anti-lock brake system contains electronic equipment that can be susceptible to interference caused by improperly installed or high output radio transmitting equipment. Since this interference could cause the possible loss of the anti-lock braking capability, such equipment should be installed by qualified professionals.

On models equipped with anti-lock brake systems, ALWAYS observe the following cautions

  1. DO NOT attempt to bleed hydraulic system without first referring to the appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES Section.
  2. DO NOT mix tire sizes. As long as tires remain close to the original diameter, increasing the width is acceptable. Rolling diameter must be identical for all 4 tires. Some manufacturers recommend tires of the same brand, style and type. Failure to follow this precaution may cause inaccurate wheel speed readings.
  3. Use ONLY recommended brake fluids. DO NOT use silicone brake fluids in an ABS-equipped vehicle.

REPLACING BLOWN FUSES

Before replacing a blown fuse, remove ignition key, turn off all lights and accessories to avoid damaging the electrical system. Be sure to use fuse with the correct indicated amperage rating. The use of an incorrect amperage rating fuse may result in a dangerous electrical system overload.

BATTERY WARNING

WARNINGWhen battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See appropriate COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section below.
  1. COMPUTER RELEARN PROCEDURES - 1984-90
  2. COMPUTER RELEARN PROCEDURES - 1991-93
  3. COMPUTER RELEARN PROCEDURES - 1994
  4. COMPUTER RELEARN PROCEDURES - 1995
  5. COMPUTER RELEARN PROCEDURES - 1996

BRAKE PAD WEAR INDICATOR

Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.

CATALYTIC CONVERTER

To prevent catalytic converter overheating, DO NOT allow engine to idle for more than 20 minutes.

COOLANT (DEX-COOL 1995-96 MODELS)

CAUTIONSome 1995 build-out and all 1996 models have DEX-COOL engine coolant installed at the factory. DEX-COOL coolant is a silicate-free coolant that is orange in color. It should not be mixed with regular ethylene-glycol coolant. To avoid possible damage to vehicle cooling system, visually check engine coolant color before adding and/or changing engine coolant. Vehicle should have an identification label placed under the hood stating what type coolant is installed.

COOLANT (PROPYLENE-GLYCOL FORMULATIONS)

CAUTIONTo avoid possible damage to vehicle use only ethylene-glycol based coolants with a mixture ratio from 44-68% anti-freeze. DO NOT use 100% anti-freeze as it will cause the formation of cooling system deposits. This results in coolant temperatures of over 300° F (149°C) which can melt plastics. 100% anti-freeze has a freeze point of only -8° F (-22°C).
CAUTIONPropylene-Glycol Mixtures has a smaller temperature range than Ethylene-Glycol. The temperature range (freeze-boil) of a 50/50 Anti-Freeze/Water Mix is as follows: Propylene-Glycol -26° F (-32°C) - 257° F (125°C) Ethylene-Glycol -35° F (-37°C) - 263° F (128°C)
CAUTIONPropylene-Glycol/Ethylene-Glycol Mixtures can cause the destabilization of various corrosion inhibitors. Also Propylene-Glycol/Ethylene-Glycol has a different specific gravity than Ethylene-Glycol coolant, which will result in inaccurate freeze point calculations.

ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS

WARNINGMany solid state electrical components can be damaged by static electricity (ESD). Some will display a warning label, but many will not. Discharge personal static electricity by touching a metal ground point on the vehicle prior to servicing any ESD sensitive component.

FUEL SYSTEM SERVICE

WARNINGRelieve fuel system pressure prior to servicing any fuel system component.

HALOGEN BULBS

WARNINGHalogen bulbs contain pressurized gas which may explode if overheated. DO NOT touch glass portion of bulb with bare hands. Eye protection should be worn when handling or working around halogen bulbs.

METHANOL GASOLINE

CAUTIONFuel that is more than 5% methanol should not be used in this vehicle. It can corrode metal parts in the fuel system, and damage plastic and rubber parts. Even at 5% methanol or less, solvents and corrosion preventers must be used with this fuel to avoid these problems.

RADIATOR CAP

CAUTIONAlways disconnect the fan motor when working near the radiator fan. The fan is temperature controlled and could start at any time even when the ignition key is in the OFF position. DO NOT loosen or remove radiator cap when cooling system is hot.

RADIATOR FAN

WARNINGKeep hands away from radiator fan. Fan is controlled by a thermostatic switch which may come on or run for up to 15 minutes even after engine is turned off.

SPARK PLUGS

Note. Allow engine to cool before removing spark plugs from aluminum cylinder heads.

TRACTION CONTROL SYSTEM (IF EQUIPPED)

CAUTIONIf tires are allowed to spin at high speeds when TRACTION OFF light is on, tires can explode. Also, spinning the tires with the warning light on can cause the transaxle to overheat. DO NOT spin wheels above 35 MPH.

WARRANTY INFORMATION

CAUTIONDue to the different warranties offered in various regions and the variety of after-market extended warranties available, please refer to the warranty package that came with the vehicle to verify all warranty options.

BASIC NEW CAR WARRANTY

Everything covered for 12 months or 12,000 miles, whichever occurs first.

POWERTRAIN WARRANTY

Begins at 12 months or 12,000 miles and lasts for 6 years or 60,000 miles, whichever occurs first. Covers all moving internal and external parts, including seals and water pump on engine and clutch cover and "U" joints on transaxle. Items not covered include accessory drive belts, clutch discs and brake pads.

SUPPLEMENTAL INFLATABLE RESTRAINT COVERAGE

Begins at Warranty Start Date and lasts 3 years regardless of mileage.

CORROSION COVERAGE

Begins at Warranty Start Date and lasts 6 years or 100,000 miles, whichever occurs first. Covers any holes in body sheet metal caused by corrosion.

EMISSIONS PERFORMANCE WARRANTY

Begins at Warranty Start Date and lasts for 5 years or 50,000 miles, whichever occurs first. Applies only in states that require EPA emission performance testing. Coverage is limited to fewer components after 2 years or 24,000 miles.

Scheme 4

Scheme 4: FUSE PANEL IDENTIFICATION (1984-85)

Fuse & Circuit Breaker Identification

  1. 1 - Blank
  2. 2 - 15 Amp - Center Information Cluster, Underhood Lights, Horn Relay, Courtesy Lights, Map Lights, Door, Power Door Lock Control, Radio Clock, Key Warning & Headlight ON Chime, Dome Light Timer, Spare Tire Illumination, Power Antenna Relay, Cargo Lights, Cigarette Lighter, Console Storage Compartment Light, Vanity Mirror Light
  3. 3 - 10 Amp - Hatch Release Switches, Left & Right Door, Storage Compartment
  4. 4 - 5 Amp - LCD Speedometer Cluster
  5. 5 - 25 Amp (Circuit Breaker) - A/C Control
  6. 6 - 30 Amp - Rear Window Defogger Switch
  7. 7 - 10 Amp - Headlight Switch
  8. 8 - 3 Amp - Fuel Injector No. 1
  9. 9 - 10 Amp - Rear Window Defogger Switch, Center Information Cluster, Canister Purge, Seat Belt Chime, Auto. Trans. Converter Clutch Brake (TCC), EGR Control, Air Switch, Air Control, Dome Light Timer, "E" Cell
  10. 10 - 3 Amp (Circuit Breaker) - Engine Cooling Fan Relay
  11. 11 - 5 Amp - LCD Speedometer Cluster
  12. 12 - 5 Amp - Fuel Pump, Oil Pressure Sender
  13. 13 - 3 Amp - Fuel Injector No. 2
  14. 14 - 15 Amp - Turn Signal Flasher, Foglight Switch, Back-Up Light Switch, Neutral Safety Switch
  15. 15 - 30 Amp (Circuit Breaker) - Power Windows
  16. 16 - 10 Amp - Hatch Release Relay
  17. 17 - 10 Amp - Radio, Theft Deterrent Module
  18. 18 - 3 Amp - Electronic Spark Control Module, Electronic Control Module
  19. 19 - 3 Amp - Cruise Engage Switch, Rear View, Mirror Adjuster Switch
  20. 20 - 30 Amp (Circuit Breaker) - Power Seats Switch, Power Door Lock Relay
  21. 21 - Blank
  22. 22 - 25 Amp - Wiper Switch
  23. 23 - 3 Amp - Headlight Switch
  24. 24 - 10 Amp - Oil Pressure Switch, Fuel Pump Relay, Electronic Control Module
  25. 25 - 20 Amp (Circuit Breaker) - Hazard Flasher, Stoplight Switch

Scheme 5

Scheme 5: FUSE PANEL IDENTIFICATION (1986-87)

Fuse Identification

  1. 1 - 3 Amp - Hatch Release Switches, Left & Right Door Storage Compartment
  2. 2 - 10 Amp (1986) - 15 Amp (1987) - Theft Deterrent Module
  3. 3 - Blank
  4. 4 - 5 Amp - Fuel Pump, Oil Pressure Sender
  1. 1 - 10 Amp - ABS Harness & Unit
  2. 2 - 15 Amp - Center Information Cluster, Underhood Lights, Horn Relay, Courtesy Lights, Map Lights, Door, Power Door Lock Control, Radio Clock, Key Warning & Headlight On Chime, Dome Light Timer, Spare Tire Illumination, Power Antenna Relay, Cargo Lights, Cigarette Lighter, Console Storage Compartment Light, Vanity Mirror Light
  3. 3 - 3 Amp - Engine Cooling Fan Relay
  4. 4 - 5 Amp - LCD Speedometer Cluster
  5. 5 - 30 Amp (Circuit Breaker) - Hatch Release Relay
  6. 6 - 25 Amp - A/C Control
  7. 7 - 10 Amp - Headlight Switch
  8. 8 - 7.5 Amp - Fuel Injector No. 1
  9. 9 - 10 Amp - Center Information Cluster, Canister Purge, Seat Belt Chime, Auto. Trans. Converter Clutch Brake (TCC), EGR Control, Air Switch, Air Control, Dome Light Timer
  10. 10 - 35 Amp (Circuit Breaker) - Rear Window Defogger
  11. 11 - 5 Amp - LCD Speedometer Cluster
  12. 12 - 20 Amp - Hazard Flasher, Stoplight Switch
  13. 13 - 5 Amp - Fuel Injector No. 2
  14. 14 - 15 Amp - Turn Signal Flasher, Foglight Switch, Back-Up Light Switch, Neutral Safety Switch
  15. 15 - 30 Amp (Circuit Breaker) - Power Window Switches
  16. 16 - Blank
  17. 17 - 10 Amp - Radio, Theft Deterrent Module
  18. 18 - 3 Amp - Electronic Spark Control Module, Electronic Control Module
  19. 19 - 3 Amp - Cruise Engage Switch, Rear View Mirror Adjuster Switch
  20. 20 - 30 Amp (Circuit Breaker) - Power Seats Switches, Power Door Locks Relay
  21. 21 - 10 Amp - Theft Deterrent Decoder Module (VATS)
  22. 22 - 25 Amp - Wiper Switch
  23. 23 - 3 Amp - Headlight Switch
  24. 24 - 10 Amp - Oil Pressure Switch, Fuel Pump Relay, Electronic Control Module
  25. 25 - Blank

FUSE & CIRCUIT BREAKER IDENTIFICATION - FUSE HOLDER (1988-89)

  1. 1 - 3 Amp - Hatch Release Switches, Left & Right Door, Storage Compartment
  2. 2 - 15 Amp - Theft Deterrent Module (U.T.D.)
  3. 3 - Blank
  4. 4 - 5 Amp - Fuel Pump, Oil Pressure Sender

FUSE & CIRCUIT BREAKER IDENTIFICATION - FUSE PANEL (1988-89)

  1. 1 - 3 Amp - Engine Cooling Fan
  2. 2 - 15 Amp - Center Information Cluster, Underhood Lights, Horn Relay, Courtesy Lights, Map Lights, Door, Power Door Lock Control, Radio Clock, Key Warning & Headlight ON Chime, Dome Light Timer, Spare Tire Illumination, Power Antenna Relay, Cargo Lights, Cigarette Lighter, Console Storage, Compartment Light
  3. 3 - 10 Amp - Theft Deterrent Decoder, Module (VATS) (1988), Low Pressure Tire Sensor (1988), Pass Key (1989)
  4. 4 - 5 Amp - LCD Speedometer Cluster
  5. 5 - 30 Amp (Circuit Breaker) - Hatch Release Relay
  6. 6 - 25 Amp - A/C Control
  7. 7 - 10 Amp - Headlight Switch
  8. 8 - 7.5 Amp - Fuel Injector No. 1
  9. 9 - 10 Amp - Center Information Cluster, Canister Purge, Seat Belt Chime, Auto. Trans. Converter Clutch Brake (TCC), EGR Control, Air Switch, Air Control, Dome Light Timer, Vanity Mirror & Map Light
  10. 10 - 35 Amp (Circuit Breaker) - Rear Window Defogger
  11. 11 - 5 Amp - LCD Speedometer Cluster
  12. 12 - 10 Amp - Heated Mirrors
  13. 13 - 5 Amp - Fuel Injectors No. 2
  14. 14 - 15 Amp - Turn Signal Flasher, Foglight Switch, Back-Up Light Switch, Neutral Safety Switch
  15. 15 - 30 Amp (Circuit Breaker) - Power Window Switches
  16. 16 - 10 Amp - ABS Harness & Unit
  17. 17 - 10 Amp - Radio, Theft Deterrent Module
  18. 18 - 3 Amp - Electronic Spark Control Module, Electronic Control Module
  19. 19 - 3 Amp - Cruise Engage Switch, Rear View, Mirror Adjuster Switch
  20. 20 - 30 Amp (Circuit Breaker) - Power Seats Switch, Power Door Lock Relay
  21. 21 - 20 Amp - Hazard Flasher, Stoplight Switch
  22. 22 - 25 Amp - Wiper Switch
  23. 23 - 3 Amp - ECM
  24. 24 - 10 Amp - Oil Pressure Switch, Fuel Pump, Relay, Electronic Control Module
  25. 25 - Blank

FUSE & CIRCUIT BREAKER IDENTIFICATION - FUSE HOLDER (1990)

  1. 1 - 10 Amp - Secondary Fuel Pump
  2. 2 - 15 Amp - Horns/Theft
  3. 3 - 15 Amp - Power Door Locks
  4. 4 - 10 Amp - Crank Fuse For SIR

FUSE & CIRCUIT BREAKER IDENTIFICATION - FUSE PANEL (1990)

  1. 1 - 15 Amp - Courtesy Lights, Antenna Speakers, A/C
  2. 2 - 25 Amp - A/C, DRL, CCM, O2 Sensor (ZR1)
  3. 3 - 10 Amp - CCM, LTPWS, Vanity Mirrors
  4. 4 - 5 Amp - Instrument Cluster, DIC, Warning Lights
  5. 5 - 30 Amp (Circuit Breaker) - Hatch Release
  6. 6 - 15 Amp - Parking Lights, Foglights, DRL, IP Lights
  7. 7 - 5 Amp - HVAC, DIC, Radio, Power Seats
  8. 8 - 20 Amp - Electronic Fuel Injectors
  9. 9 - 10 Amp - HVAC, Cooling Fans, DRL, Ignition (ZR1)
  10. 10 - 35 Amp (Circuit Breaker) - Rear Window Defogger
  11. 11 - 10 Amp - CCM, Tone Generator, Dome Lights
  12. 12 - 10 Amp - Heated Mirrors, A/C
  13. 13 - 10 Amp - Electronic Fuel Injectors
  14. 14 - 15 Amp - Turn Signals, Back-Up Lights
  15. 15 - 30 Amp (Circuit Breaker) - Power Windows
  16. 16 - 10 Amp - Anti-Lock Brakes
  17. 17 - 10 Amp - Radio
  18. 18 - 10 Amp - Instrument Cluster, SIR, ECM, ABS, Selective Ride
  19. 19 - 3 Amp - Cruise Control, Power Mirror
  20. 20 - 30 Amp (Circuit Breaker) - Power Seats, Locks
  21. 21 - 20 Amp - Stoplight/Hazard Flasher
  22. 22 - 25 Amp - Wipers, Radio
  23. 23 - 3 Amp - ECM
  24. 24 - 10 Amp - Primary Fuel Pump
  25. 25 - Blank

Scheme 6

Scheme 6: FUSE PANEL IDENTIFICATION (1991-92)

Scheme 7

Scheme 7

FUSE & CIRCUIT BREAKER IDENTIFICATION - AUXILIARY FUSE HOLDER (1991-92)

  1. 1 - 10 Amp - Secondary Fuel Pump
  2. 2 - 15 Amp - Horns/Theft
  3. 3 - 15 Amp - Power Door Locks
  4. 4 - 10 Amp - Crank Fuse For SIR
  5. 5 - 10 Amp - LH Switch Pod, HVAC, LH Power Mirror, A/C Prog., DIC, LH Power Window, LH Map Light (Door)
  6. 6 - 10 Amp - Accessory Plug
  7. 7 - 15 Amp - Accessory Plug, Cigarette Lighter
  8. 8 - 10 Amp - Radio Receiver

FUSE & CIRCUIT BREAKER IDENTIFICATION - MAIN PANEL (1991-92)

  1. 1 - 15 Amp - Dome Light, Glove Box Light, Map Light, Interior Lights, Map Light Mirror, A/C Prog., Spare Tire Light, Speakers, Power Antenna
  2. 2 - 10 Amp - DRL, A/C Clutch, CCM, O2 Sensor (ZR1), ALT (ZR1), A/C Prog., Valet Mode Switch, HVAC, Rear Window Defogger
  3. 3 - 10 Amp - CCM
  4. 4 - 5 Amp - Instrument Cluster, Air Bag, DIC Warning Lights
  5. 5 - 30 Amp (Circuit Breaker) - Hatch Release
  6. 6 - 15 Amp - Parking Lights, Foglights, DRL, IP Lights
  7. 7 - 10 Amp - RH Power Window, Power Seat, SRC, Map Light Mirror, PRNDL Light, RH Map LP (Door)
  8. 8 - 20 Amp - Injectors No. 1, 2, 3, 5 & 7, Injectors No. 1, 2, 3, 4, 5, 6, 7 & 8 (ZR1), Coil (ZR1)
  9. 9 - 10 Amp - TCC Brake Switch (Auto), DRL, A/C Solenoid, Cooling Fan, 4/6 Gear, Ignition (ZR1), Secondary Solenoid (ZR1), Camshaft Sensor (ZR1), EGR, Air Switch Solenoid, Air Control Valve, Alternator
  10. 10 - 35 Amp (Circuit Breaker) - Rear Window Defogger
  11. 11 - 5 Amp - CCM, Tone Generator, Instrument Cluster
  12. 12 - 10 Amp - Elect. Door Mirrors, Auto A/C Prog., A/C Prog.
  13. 13 - 10 Amp - Injectors No. 2, 4, 6 & 8, Secondary Injector (ZR1)
  14. 14 - 15 Amp - Turn Signals, Back-Up Lights, 4/6 Gear, Park Neutral (Auto)
  15. 15 - 30 Amp (Circuit Breaker) - Delayed Access Bus
  16. 16 - 10 Amp - Anti-Lock Brakes (1991), Fuel Pump (1992)
  17. 17 - 10 Amp - Radio Receiver, Radio Control Head
  18. 18 - 10 Amp - Instrument Cluster, Air Bag, Secondary Fuel (Manual), SRC, Over Voltage Protection, Diverter Valve (ZR1), Air Pump (ZR1)
  19. 19 - 10 Amp - Cruise Engage Switch, Tire Tell, Vanity Mirrors, Map Light Mirror, LH Power Mirror Switch
  20. 20 - 30 Amp (Circuit Breaker) - Power Seats, Sport Power Seats
  21. 21 - 20 Amp - Stoplights, Hazard Flasher
  22. 22 - 25 Amp - Windshield Washer Switch
  23. 23 - 3 Amp - ECM
  24. 24 - 10 Amp - Primary Fuel Pump (1991), Coil (1992)
  25. 25 - 30 Amp (Circuit Breaker) - Delayed Access Bus

Scheme 8

Scheme 8: FUSE PANEL IDENTIFICATION (1993-96)

FUSE & CIRCUIT BREAKER IDENTIFICATION (1993-96)

  1. 1 - Blank (1993)
  2. 1 - 5 Amp (1994) - A/C Module
  3. 2 - Blank
  4. 3 - 30 Amp - Windshield Wiper/Washer Switch
  5. 4 - 5 Amp - Radio Receiver Box
  6. 5 - 5 Amp - Heated Mirrors
  7. 6 - 15 Amp - Taillights, DRL Module
  8. 7 - 15 Amp - Horn Relay, Export Horn (1994)
  9. 8 - 20 Amp - Hazard Flashers, Brake Switch
  10. 9 - 5 Amp - Crank, Air Bag
  11. 10 - 5 Amp - Crank, Park/Neutral (Auto), Clutch (Manual)
  12. 11 - 5 Amp - Right Illumination
  13. 12 - 5 Amp - Left Illumination
  14. 13 - 5 Amp - Console Illumination
  15. 14 - 10 Amp - Fuel Pump 1
  16. 15 - 10 Amp - Fuel Pump 2 (1993 and 1994 LT5)
  17. 16 - 5 Amp - Central Control Module, DRL Module
  18. 17 - 10 Amp (1993) - Valet Mode, Alternator, Vacuum Pump (LT5), Oxygen Sensors (LT5)
  19. 17 - 10 Amp (1994) - Generator, Vacuum Pump (LT5), Valet Mode (LT5), EGR Ckt (LT5), Oxygen Sensors (LT5)
  20. 18 - 10 Amp - A/C Compressor Clutch, Heater/A/C Control Head, Heater/A/C Programmer, Rear Defogger Relay (1994)
  21. 19 - 15 Amp - Utility Plug
  22. 20 - 5 Amp (1993) - A/C Programmer
  23. 20 - 15 Amp (1994) - Heated Oxygen Sensors (LT1)
  24. 21 - 10 Amp - Fuel Pump Relay Coil 2 (LT5), Selective Ride Control Module, ABS Module, Air Pump Relay, TCC Switch (Auto), Diverter Valve, Secondary Bypass Valve (1994 LT5)
  25. 22 - 10 Amp (1993) - Injectors No. 1, 3, 5 & 7 (LT1), Primary Injectors No. 1-8 (LT5), Ignition Coil Module (LT5)
  26. 22 - 10 Amp (1994) - Injectors No. 1, 4, 6 & 7 (LT1), Primary Injectors No. 1-8 (LT5), Ignition Coil Plate Connector (LT5)
  27. 23 - 10 Amp (1993) - Injectors No. 2, 4, 6 & 8 (LT1), Secondary Injector Relays No. 1 & 2 (LT5)
  28. 23 - 10 Amp (1994) - Injectors No. 2, 3, 5 & 8 (LT1), Secondary Injector Relays No. 1 & 2 (LT5), Secondary SFI Control Modules (LT5)
  29. 24 - 10 Amp - Turn Signal Flashers
  30. 25 - 10 Amp (1993) - Coil Module (LT1)
  31. 25 - 10 Amp (1994) - Ignition Coil & Ignition Coil Module
  32. 26 - 5 Amp - Passive Keyless Entry
  33. 27 - 5 Amp - Instrument Cluster, Air Bag DERM, Driver Info Center, Acceleration Slip Regulation Switch
  34. 28 - 15 Amp (1993) - Back-Up Light Switch, 4/6 Gear Solenoid, Trans. Position Switch
  35. 28 - 10 Amp (1994) - Back-Up Light Switch, 1 to 4 Shift Solenoid, Trans. Position Switch
  36. 29 - 5 Amp - Primary & Secondary Cooling Fan Relay Coil
  37. 30 - 10 Amp - Secondary Butterfly Relay (LT5), Direct Ignition Module, Camshaft Sensor, Traction Buffer, Canister Purge Solenoid, EGR Control (1993 LT1), 4/6 Gear Relay (1993 Manual), EGR Ckt (1994 LT1), 1 to 4 Shift Relay (1994)
  38. 31 - 5 Amp - Power Mirror Control, Lighted Mirror, Visor Mirrors
  39. 32 - 5 Amp - Cruise Engage Switch, DRL Module, Low Tire Pressure Module
  40. 33 - 5 Amp - Engine Control Module
  41. 34 - 15 Amp - Air Bag System
  42. 35 - 5 Amp - Central Control Module
  43. 36 - 5 Amp - Dome Light Relay, Footwell Lights, Door & Glove Box Lights, Lighted Rearview Mirror
  44. 37 - 20 Amp - Bose Amplifier, Power Antenna, Spare Tire Light, Cargo Light
  45. 38 - 5 Amp - LCD Tone Generator
  46. 39 - 5 Amp - Central Control Module 2
  47. 40 - 5 Amp - Radio Receiver Box (Battery), Radio Control Head, Passive Keyless Entry Module
  48. 41 - Blank (1993)
  49. 41 - 10 Amp (1994) - Sport Seat
  50. 42 - 20 Amp (1993) - Power Door Lock Switches
  51. 42 - 20 Amp (1994) - Power Door Lock Switches, Driver Info. Center, Passive Keyless Entry Module
  52. 43 - 5 Amp - A/C Programmer
  53. 44 - 15 Amp - Cigarette Lighter
  54. 45 - 25 Amp - Hatch/Deck Lid Release Relay

Scheme 9

Scheme 9: ECM ENGINE MAXI-FUSE (HIGH AMP) PANEL ID (1993-96)
WARNINGAlways disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
  1. 1 - 20 Amp - ECM
  2. 2 - 20 Amp - Fuel Pump
  3. 3 - 20 Amp - ABS, Acceleration Slip Regulation System
  4. 4 - 30 Amp - A/C Blower
  5. 5 - 40 Amp - Rear Defogger
  6. 6 - 60 Amp - Ignition
  7. 7 - 60 Amp - Ignition
  8. 8 - 40 Amp - Brake Hydraulics

Scheme 10

Scheme 10: FRONT LIGHTS MAXI-FUSE (HIGH AMP) PANEL ID (1993-94)
WARNINGAlways disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
  1. 1 - 20 Amp - Interior Lights
  2. 2 - 30 Amp - Primary Cooling Fan
  3. 3 - 30 Amp - LH Headlight Motor
  4. 4 - 30 Amp - RH Headlight Motor
  5. 5 - 40 Amp - Secondary Cooling Fan
  6. 6 - 60 Amp - Exterior Lighting
  7. 7 - 60 Amp - Power Accessories
  8. 8 - 20 Amp - Air Pump