Chevrolet Cavalier 2003 - 2003 GENERAL MOTORS Cavalier & Sunfire

Chevrolet Cavalier 2003 - BUZZERS, RELAYS & TIMERS

Chevrolet Cavalier 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Compressor Clutch Relay	In underhood fuse block. See Fig. 5 .
A/C Relay	In engine compartment fuse/relay center. See Fig. 11 .
AF Injector Relays (4)	At left front of engine compartment. See Fig. 8 .
ALT. FUEL Relay	In engine compartment fuse/relay center. See Fig. 11 .
COOLING FAN Relay	In engine compartment fuse/relay center. See Fig. 11 .
Cooling Fan Relay	In underhood fuse block. See Fig. 5 .
Door Lock Relay	Above right kick panel.
Foglamp Relay	On front impact bar.
Fuel Pump Relay	In underhood fuse block. See Fig. 5 .
FUEL PUMP Relay (CNG)	In engine compartment fuse/relay center. See Fig. 11 .
Heater Blower Relay	In underhood fuse block. See Fig. 5 .
HEATER BLOWER Relay (CNG)	In engine compartment fuse/relay center. See Fig. 11 .
Horn Relay	Behind left end of dash.

Chevrolet Cavalier 2003 - CIRCUIT PROTECTION DEVICES

Chevrolet Cavalier 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Engine Compartment Fuse/Relay Center (CNG)	Left side of engine compartment. See Fig. 11 .
I/P Fuse Block	Behind lower left side of dash.
Underhood Fuse Block	Left front of engine compartment. See Fig. 5 .

Chevrolet Cavalier 2003 - CONTROL UNITS

Chevrolet Cavalier 2003 CONTROL UNITS LOCATION

Component	Location
Body Control Module	Behind lower left side of dash.
Cruise Control Module	On rear right side of engine compartment. See Fig. 4 .
Electronic Brake Control Module	Next to master cylinder.
Fuel Tank Module	Under rear of passenger compartment, at fuel tank.
Ignition Control Module	On top left of engine.
Inflatable Restraint Sensing & Diagnostic Module	Under front passenger seat, under carpet.
Inflatable Restraint Side Impact Module (Left Front)	On driver seat back.
Inflatable Restraint Side Impact Module (Right Front)	On passenger seat back.
Powertrain Control Module	On right rear of engine compartment. See Fig. 4 .
Turn Signal/Hazard Flasher Module	On dash harness, near steering column.
Vehicle Communication Interface Module	Under right side of dash, right of blower motor.

Chevrolet Cavalier 2003 - MOTORS

Chevrolet Cavalier 2003 MOTORS LOCATION

Component	Location
Blower Motor	Under right side of dash, in HVAC assembly.
Cooling Fan	In center front of engine compartment.
Fuel Pump & Sender Assembly	In top of fuel tank.
Windshield Washer Fluid Pump	Left front of engine compartment, in washer reservoir.
Windshield Wiper Motor Assembly	On left side of firewall.

Chevrolet Cavalier 2003 - SENDING UNITS & SENSORS

Chevrolet Cavalier 2003 SENDING UNITS & SENSORS LOCATION

Component	Location
A/C Refrigerant Pressure Sensor	In right front corner of engine compartment, on refrigerant line. See Fig. 6 .
Automatic Transmission Fluid Temperature Sensor	In transmission valve body.
CNG Fuel Rail Pressure (FRP) Sensor	On CNG fuel rail. See Fig. 10 .
CNG Fuel Rail Temperature (FRT) Sensor	On CNG fuel rail. See Fig. 10 .
CNG Fuel Tank Pressure (FTP) Sensor	Rear of vehicle, on CNG tank. See Fig. 9 .
Crankshaft Position Sensor	On left rear of engine.
Engine Coolant Temperature Sensor	On top right rear of engine. See Fig. 1 .
Engine Oil Pressure Sensor	On left rear of engine.
Fuel Tank Pressure Sensor	On top of fuel tank.
Global Positioning Sensor	On underside of rear package shelf trim.
Heated Oxygen Sensor 1	In exhaust manifold, forward of catalytic converter.
Heated Oxygen Sensor 2	In exhaust, rearward of catalytic converter.
Inflatable Restraint Front End Discriminating Sensor	On center of front bumper, behind fascia.
Inflatable Restraint Side Impact Sensor (Coupe) (Left)	In left front door.
Inflatable Restraint Side Impact Sensor (Coupe) (Right)	In right front door.
Inflatable Restraint Side Impact Sensor (Sedan) (Left)	At driver side "B" pillar.
Inflatable Restraint Side Impact Sensor (Sedan) (Right)	At passenger side "B" pillar.
Intake Air Temperature Sensor	On air cleaner outlet duct assembly.
Knock Sensor	On left rear side of engine block.
Manifold Absolute Pressure Sensor	Mounted on side of throttle body. See Fig. 1 .
Passlock Sensor	In right side of steering column.
Throttle Position Sensor	On throttle body assembly. See Fig. 1 .
Vehicle Speed Sensor	On right rear of transaxle. See Fig. 3 .
Wheel Speed Sensors (4)	On each wheel hub assembly.

Chevrolet Cavalier 2003 - SOLENOIDS & SOLENOID VALVES

Chevrolet Cavalier 2003 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
A/T Shift Lock Solenoid	On left side of dash, at bottom of steering column.
CNG Fuel Injectors (4)	On CNG fuel rail. See Fig. 10 .
Evaporative Emission Canister Purge Solenoid	On top rear of engine. See Fig. 1 .
Evaporative Emission Canister Vent Solenoid	Under rear of vehicle.
High Pressure Lock-Off (HPL)	Rear of vehicle, on CNG tank. See Fig. 9 .
HPL Solenoid Tank Valve	Rear of vehicle, on CNG tank. See Fig. 9 .
Idle Air Control Valve	On throttle body assembly. See Fig. 1 .
Low Pressure Lock-Off (LPL) Solenoid Valve	In engine compartment. See Fig. 10 .
Rear Compartment Lid Release Actuator	On lower side of rear compartment lid.
Torque Converter Clutch Solenoid Valve	In transaxle valve body.
1-2 Shift Solenoid (1-2 SS) Valve	In transaxle valve body.
2-3 Shift Solenoid (2-3 SS) Valve	In transaxle valve body.

Chevrolet Cavalier 2003 - SWITCHES

Chevrolet Cavalier 2003 SWITCHES LOCATION

Component	Location
Back-Up Lamp Switch	On left rear of transaxle. See Fig. 3 .
Brake Fluid Level Switch	Integral to brake fluid reservoir.
Clutch Pedal Position Switch	On left lower dash, below steering column.
Coolant Level Switch	On right side of engine compartment, in surge tank. See Fig. 6 .
Cruise Control Brake Switch	On left side of dash, below steering column.
Engine Coolant Level Switch	On right side of engine compartment.
Park Brake Switch	In console, at base of parking brake lever.
Park/Neutral Position Switch	On top of transaxle.
Seat Belt Switch	In driver seat belt assembly.
Stoplight Switch	Below left side of dash, near steering column.

Chevrolet Cavalier 2003 - MISCELLANEOUS

Chevrolet Cavalier 2003 MISCELLANEOUS LOCATION

Component	Location
Audio Amplifier	In luggage compartment, on left rear wheelwell.
Blower Motor Resistor Assembly	Under right side of dash, on blower motor assembly.
Data Link Connector	Below left side of dash.
Daytime Running Lamps Resistor	Below right headlamp assembly.
Digital Radio Receiver	Below rear package shelf trim.

Chevrolet Cavalier 2003 - CONNECTORS

Chevrolet Cavalier 2003 CONNECTORS LOCATION

Component	Location
C001 (Black, 10 Pin)	At left front of engine compartment. See Fig. 8 .
C002 (Black, 6 Pin)	At left rear of engine compartment, under brake master cylinder.
C003 (Black, 3 Pin)	Behind left side of dash. See Fig. 7 .
C004 (Black, 6 Pin)	Rear of vehicle near CNG tank. See Fig. 7 .
C005 (Black, 1 Pin)	Rear of vehicle, near CNG tank. See Fig. 7 .
C100 (Black, 38 Pin)	At left side of engine compartment.
C101 (Black, 15 Pin)	At left front of engine compartment.
C102 (Black, 8 Pin)	Near throttle body.
C103 (Gray, 14 Pin)	On automatic transmission.
C104 (Gray, 2 Pin)	On left rear center of engine, near crankshaft position sensor.
C200 (Black, 23 Pin)	Behind left end of dash.
C201 (Black, 3 Pin)	Near right "B" pillar.
C202 (Black, 6 Pin)	Behind left end of dash.
C203 (Black, 3 Pin)	Behind left side of dash.
C204 (Black, 8 Pin)	Behind right side of dash.
C206 (Yellow, 2 Pin)	At lower dash tie bar.
C207 (Yellow, 2 Pin)	At lower dash tie bar.
C220 (Light Green, 6 Pin)	Behind left end of dash.
C221 (Yellow, 8 Pin)	Behind left end of dash.
C222 (10 Pin)	Behind right end of dash.
C313 (Light Gray, 16 Pin)	Under center of rear seat.

Chevrolet Cavalier 2003 - GROUNDS

Chevrolet Cavalier 2003 GROUNDS LOCATION

Component	Location
G102	At left front of engine compartment.
G110	On rear of engine. See Fig. 1 .
G112	On rear of engine. See Fig. 1 .
G201	Behind upper left side of dash, on steering column support bracket.
G204	Behind upper left side of dash, on steering column support bracket.
G302	Below right front seat, on frame rail.
G303	Below right front seat.
G304	Below left front seat, on frame rail.

Chevrolet Cavalier 2003 - SPLICES

Chevrolet Cavalier 2003 SPLICES LOCATION

Component	Location
SP102	Above windshield washer pump, below battery tray.
S101	In engine harness, at left side of engine, 7cm from cooling fan connector.
S102	In engine harness, at left rear of engine, 16cm from underhood fuse block.
S103	In dash harness, between SIR lead & CPP lead.
S104	In forward light harness, 68.5cm from horn connector.
S105	In forward light harness, 75cm from horn connector.
S107	In engine harness, at left rear of engine, 13cm from cooling fan connector breakout.
S108	In forward light harness, 44.5cm from C101.
S109	In forward light harness, 111cm from C101.
S110	In engine harness, at left front of engine, near A/C compressor clutch connector.
S111	In engine harness, at left front side of engine, near A/C compressor clutch connector.
S112	In automatic transmission harness, between C103 & shift solenoids.
S113	In forward light harness, 6.5cm from foglight relay breakout, towards C101.
S114	In forward light harness, 45.5cm from C101.
S115	In forward light harness, 52cm from C101.
S116	In forward light harness, 38cm from horn connector.
S117	In forward light harness, 44cm from C101.
S118	In forward light harness, 29cm from C101.
S119	In forward light harness, 33cm from horn.
S120	In underhood fuse block, between BATT 2 fuse & starter relay.
S121	In engine harness, at front of engine, 14.5 cm from underhood breakout.
S124	In HVAC wiring harness, 78cm from C204.
S125	In HVAC wiring harness, 85cm from C205.
S127	In forward light harness, 35.5cm from C101.
S128	In forward light harness, 56.5cm from C101.
S171	In engine harness, at front left side of engine, 4 cm from G110 breakout.
S201	In dash harness, 35cm from firewall grommet.
S202	In dash harness, 30cm from firewall grommet, toward column switches.
S203	In sun roof harness, between vent limit switch & soft stop limit switch.
S204	In dash harness, 28.5cm from firewall grommet.
S205	In dash harness, 39 cm from C207.
S206	In dash harness, 21.5cm from firewall grommet, toward instrument cluster connectors.
S207	In dash harness, 22cm from firewall grommet.
S208	In body harness, 61cm from front marker lamps grommet.
S209	In body harness, 44cm from front passenger door jamb switch connector.
S210	In headliner harness, near inside rearview mirror.
S213	In forward light harness, 24.5cm from foglamp relay.
S214	In dash harness, 18cm from electronic brake control module connector C2.
S215	In dash harness, 85cm from firewall grommet, toward sensing diagnostic module connector.
S216	In dash harness, 15cm from P210, toward instrument cluster connectors.
S217	In dash harness, 43cm from P210, toward instrument cluster connectors.
S218	In dash harness, 65.5cm from firewall grommet, toward passenger inflator module connector.
S219	In dash harness, 30cm from firewall grommet, toward instrument cluster connectors.
S220	In dash harness, 36.5cm from firewall grommet, toward instrument cluster connectors.
S221	In body harness, 10cm from C200.
S222	In body harness, 10cm from C200.
S228	In dash harness, 41.5cm from firewall grommet.
S233	In HVAC harness, 93cm from C204.
S242	In dash harness, 84cm from firewall grommet, toward data link connector.
S248	In body harness, 62cm from right front door grommet.
S280	In HVAC harness, 58cm from C204.
S281	In HVAC harness, 98.5cm from C204.
S301	In body harness, 41.5cm from seat belt switch connector, toward left side of vehicle.
S302	In body harness, 257cm from left front door grommet.
S303 (Coupe)	In body harness, 70cm from right front door grommet.
S303 (Sedan)	In body harness, 47cm from park brake switch, toward right side of vehicle.
S304	In body harness, 137cm from left front door grommet.
S305	In body harness, 71cm from front marker lamps grommet.
S306	In body harness, 69cm from seat belt switch connector, toward right side of vehicle.
S307	In body harness, 47cm from left front door grommet.
S308	In body harness, 112.5cm from radio connector.
S330	In body harness, 143cm from left tail/stoplight connector.
S331	In body harness, 113cm from right front door grommet.
S332	In body harness, 147cm from left front door grommet.
S351	In headliner harness, 46cm from domelight connector.
S352	In headliner harness, 56cm from domelight connector.
S353	In headliner harness, 36cm from domelight connector.
S390	In body harness, 30cm from G302.
S391	In body harness, 20cm from G302.
S400	In body harness, 86cm from left tail/stoplight connector.
S401	In body harness, between rear compartment light & rear compartment lid release actuator.