Chevrolet Lumina 1991 - ELECTRICAL COMPONENT LOCATOR 1991 ELECTRICAL COMPONENT LOCATIONS General Motors Corp. - Electrical Components

Chevrolet Lumina 1991 - BUZZERS, RELAYS & TIMERS

Chevrolet Lumina 1991 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C System
Compressor Control Relay
2.5L VIN "R"	In right side electrical center. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In right side electrical center. See Fig. 2 .
Right Side Electrical Center	In right side electrical center. See Fig. 3 .
Heater Blower Relays	Behind right side of dash, in convenience center. See Fig. 4 .
Air Pump Relay (3.4L)	In right side electrical connector. See Fig. 3 .
Cooling Fan Relays
2.5L VIN "R"	In right side electrical center. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In right side electrical center. See Fig. 2 .
Right Side Electrical Center	In right side electrical center. See Fig. 3 .
Defogger Timer Relay	Behind right side of dash, in convenience center. See Fig. 4 .
Fuel Pump Relay
2.5L VIN "R"	In left side electrical center. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In left side electrical center. See Fig. 2 .
Left Side Electrical Center	In left side electrical center. See Fig. 5 .
Hazard Flasher Relay	Behind right side of dash, in convenience center. See Fig. 4 .
Horn Relay	On right side of engine compartment.
Power Door Lock Relay	On right kick panel, above center access hole.
Turn Signal Flasher Relay	Behind instrument cluster, to right of steering column.

Chevrolet Lumina 1991 - CIRCUIT PROTECTION DEVICES

Chevrolet Lumina 1991 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Auto. Seat Belt Fuse	In convenience center. See Fig. 4 .
Circuit Breakers
Headlights	In convenience center. See Fig. 4 .
Power Accessories	In convenience center. See Fig. 4 .
Power Windows	In convenience center. See Fig. 4 .
Rear Defogger	In convenience center. See Fig. 4 .
Convenience Center	Behind right side of dash, below glove box. See Fig. 4 .
ECM Power Fuse
2.5L VIN "R"	In left side electrical center. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In left side electrical center. See Fig. 2 .
Left Side Electrical Center	In left side electrical center. See Fig. 5 .
Fuse Block
2.5L VIN "R"	Behind right side of dash, in glove compartment. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	Behind right side of dash, in glove compartment. See Fig. 2 .
Fusible Links
Right Side Electrical Center	In left and right side electrical center. See Fig. 3 .
Left Side Electrical Center	In left and right side electrical center. See Fig. 5 .
Electrical Centers
Left Side
2.5L VIN "R"	In engine compartment, on left strut tower. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In engine compartment, on left strut tower. See Fig. 2 .
Left Side Electrical Center	In engine compartment, on left strut tower. See Fig. 5 .
Right Side
2.5L VIN "R"	In engine compartment, on right strut tower. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	In engine compartment, on right strut tower. See Fig. 2 .
Right Side Electrical Center	In engine compartment, on right strut tower. See Fig. 3 .

Chevrolet Lumina 1991 - CONTROL UNITS

Chevrolet Lumina 1991 CONTROL UNITS LOCATION

Component	Location
Auto. Seat Belt Module	Behind right side instrument panel.
Chime Module	Behind right side of dash, in convenience center. See Fig. 4 .
Cruise Control Module	Behind instrument cluster, to left of brake pedal support.
Distributorless Ignition System (DIS) Module
2.5L	On left rear of engine, below intake manifold. See Fig. 1 .
3.1L & 3.4L	On left front of engine, above starter assembly. See Fig. 2 .
Electronic Control Module (ECM)	In engine compartment, in front of right strut tower.
Seat Belt Timer Control Module	Behind right side of dash, in convenience center.

Chevrolet Lumina 1991 - SENDING UNITS & SENSORS

Chevrolet Lumina 1991 SENDING UNITS & SENSORS LOCATION

Component	Location
Coolant Level/Corrosion Sensor	On right side of radiator. See Fig. 2 .
Coolant Temperature Sensor
2.5L VIN "R"	On top left side of engine, at coolant outlet. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On top left side of engine, at coolant outlet. See Fig. 2 .
Crankshaft Sensor	On lower right rear of engine.
Knock Sensor (3.1L & 3.4L)	Below exhaust manifold, at right rear of engine.
Manifold Absolute Press. (MAP) Sensor
2.5L	On top rear of engine, on right side of air cleaner.
3.1L & 3.4L	On bracket, behind alternator. See Fig. 2 .
Manifold Air Temp. (MAT) Sensor
2.5L	On right rear of engine, on intake manifold. See Fig. 1 .
3.1L & 3.4L	On air intake duct, near left strut tower. See Fig. 2 .
Oil Pressure Sensor
2.5L	On right rear of engine block.
3.1L & 3.4L With Oil Cooler	Left front of engine block, below oil cooler. See Fig. 2 .
3.1L & 3.4L Without Oil Cooler	Right front of engine block, above oil filter. See Fig. 2 .
Throttle Position Sensor (TPS)
2.5L VIN "R"	On throttle position. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On throttle position. See Fig. 2 .
Vehicle Speed Sensor (VSS)
2.5L VIN "R"	On top right rear of transaxle. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On top right rear of transaxle. See Fig. 2 .

Chevrolet Lumina 1991 - MOTORS

Chevrolet Lumina 1991 MOTORS LOCATION

Component	Location
A/C System
Air Temp. Valve Motor	Below right side of dash, on A/C-heater housing.
Blower Motor	Below right side of dash, on A/C-heater housing.
Idle Air Control (IAC) Motor
2.5L VIN "R"	Top of engine, below throttle body. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	Top of engine, below throttle body. See Fig. 2 .
Power Door Lock Motors	Near rear of each door.
Power Window Motors	In center of each door.
Windshield Washer Pump Motor	In windshield washer fluid reservoir.
Windshield Wiper Motor	In engine compartment, on left side of firewall.

Chevrolet Lumina 1991 - SOLENOIDS & SOLENOID VALVES

Chevrolet Lumina 1991 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Air Select/Switching Valve	On right rear side of engine.
Canister Purge Solenoid	On bracket, behind MAP sensor. See Fig. 2 .
Elec. Vac. Regulator Valve (EVRV)	At rear of engine, at valve cover.
Seat Belt Retractor Solenoids	In bottom of each door.
Torque Converter Clutch (TCC) Solenoid	On transaxle valve body.

Chevrolet Lumina 1991 - SWITCHES

Chevrolet Lumina 1991 SWITCHES LOCATION

Component	Location
A/C System
Cooling Fan Temperature Switch	In A/C line, on left front of engine compartment. See Fig. 1 .
A/C High Pressure Switch	On back of A/C compressor. See Fig. 2 .
Intermediate Pressure Switch	In A/C line, near A/C accumulator.
Low Pressure Switch
2.5L VIN "R"	On back of A/C compressor. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On back of A/C compressor. See Fig. 2 .
Pressure Fan Switch	On A/C pressure line, at condenser. See Fig. 2 .
Back-Up Light Switch	On top of transaxle.
Brake Fluid Level Switch	On master cylinder reservoir.
Brake Switch	Under left side of dash, on brake pedal support bracket.
Clutch Switch	Under left side of dash, on clutch pedal support bracket.
Coolant Temperature Switch	On right side of engine, below coolant outlet. See Fig. 2 .
Fuel Pump/Oil Pressure Switch	On left front side of engine, near oil filter. See Fig. 2 .
Park/Neutral (P/N) Switch
2.5L VIN "R"	On left side of transaxle, below brake master cylinder. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On left side of transaxle, below brake master cylinder. See Fig. 2 .
Parking Brake Switch	On parking brake pedal support.
Power Steering Press. Switch (PSPS)
2.5L VIN "R"	On steering gear assembly, near input shaft. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	On steering gear assembly, gear input shaft. See Fig. 2 .
Seat Belt Switch	In driver's seat belt.
Transaxle Position Switch	Left side of engine, on top of transaxle.

Chevrolet Lumina 1991 - MISCELLANEOUS

Chevrolet Lumina 1991 MISCELLANEOUS LOCATION

Component	Location
A/C-Heater System
Blower Motor Resistor	Below right side of dash, on A/C-heater housing.
Compressor Clutch Diode	In A/C compressor clutch connector.
Solenoid Box	Below right side of dash, on A/C-heater housing.
ALDL Connector
2.5L VIN "R"	Below instrument cluster, to right of steering column. See Fig. 1 .
3.1L VIN "T" & 3.4L VIN "X"	Below instrument cluster, to right of steering column. See Fig. 2 .
Fuel Pump Test/Prime Connector	Taped to wiring harness, below left electrical center. See Fig. 2 .