Buick LeSabre Custom 2003 - 2003 GENERAL MOTORS LeSabre

Buick LeSabre Custom 2003 - BUZZERS, RELAYS & TIMERS

Buick LeSabre Custom 2003 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
ACCY Relay	In underhood fuse block.
A/C CLU Relay	In underhood fuse block.
AIR PUMP Relay	In underhood fuse block.
CIGAR Relay	In rear fuse block.
COOLFAN 1 (Low Speed) Relay	In underhood fuse block.
COOLFAN 2 (High Speed) Relay	In underhood fuse block.
COOLFAN S/P Relay	In underhood fuse block.
DRL Relay	In underhood fuse block.
ELC Relay	In rear fuse block.
F/PMP Relay	In rear fuse block.
FRT CTSY Relay	In rear fuse block.
F/TNKDRLOCK Relay	In rear fuse block.
HDLP HI BM Relay	In underhood fuse block.
HDLP LO BM Relay	In underhood fuse block.
HORN Relay	In underhood fuse block.
HVAC SOL Relay	In underhood fuse block.
IGN 1 Relay	In underhood fuse block.
IGN 1 Relay	In rear fuse block.
IGN 3 Relay	In rear fuse block.
INT LP Relay	In rear fuse block.
PARK Relay	In rear fuse block.
PRK LP Relay	In rear fuse block.
RAP Relay	In rear fuse block.
REVERSE Relay	In rear fuse block.
RR DEFOG Relay	In rear fuse block.
START 1 Relay	In underhood fuse block.
TRK REL Relay	In rear fuse block.
Turn Signal/Hazard Flasher Module	Behind left side of dash, above data link connector.

Buick LeSabre Custom 2003 - CIRCUIT PROTECTION DEVICES

Buick LeSabre Custom 2003 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Rear Fuse Block	Under left rear seat. See Fig. 7 .
Underhood Fuse Block	Right front side of engine compartment.

Buick LeSabre Custom 2003 - CONTROL UNITS

Buick LeSabre Custom 2003 CONTROL UNITS LOCATION

Component	Location
Audio Amplifier	Under right side of rear package shelf.
Blower Control Processor	Behind dash, at right front side of blower motor. See Fig. 4 .
Cruise Control Module (CCM)	On left side of engine compartment, on strut tower. See Fig. 3 .
Dash Integration Module	Behind right side of dash, under sound insulator.
Electronic Brake Control Module	On left front of engine compartment.
Ignition Control Module (ICM)	On top left front of engine. See Fig. 2 .
Inflatable Restraint Sensing & Diagnostic Module	Under rear of center console, mounted to floorpan.
Instrument Panel Integration Module	Behind left side of dash.
Memory Seat Module	Under driver's seat.
Powertrain Control Module	In air cleaner housing.
Radio Antenna Module	On center rear of headliner.
Rear Integration Module	Behind upper left rear seat cushion.
Remote Control Door Lock Receiver	Under rear package shelf.
Sun Roof Module	Rear of glass assembly, above headliner. See Fig. 6 .
Vehicle Communication Unit	Behind right rear seat back.
Vehicle Interface Unit	Behind right rear seat back.

Buick LeSabre Custom 2003 - MOTORS

Buick LeSabre Custom 2003 MOTORS LOCATION

Component	Location
Air Temperature Actuator (Auto A/C) (Right)	Behind glove box, on right side of HVAC assembly. See Fig. 4 .
Air Temperature Actuator (Manual A/C)	Behind dash, at left front side of blower motor. See Fig. 4 .
Automatic Level Control Compressor	Above left side of rear axle.
Blower Motor	Under right side of dash, above sound insulator. See Fig. 4 .
Engine Cooling Fan (Left)	Behind left side of radiator.
Engine Cooling Fan (Right)	Behind right side of radiator.
Idle Air Control (IAC) Valve	On throttle body assembly. See Fig. 2 .
Mode Actuator	On left side of HVAC assembly.
Recirculation Actuator	Under right side of dash, to right of blower motor. See Fig. 4 .
Sun Roof Motor	Rear of glass assembly, above headliner. See Fig. 6 .
Windshield Washer Fluid Pump	Behind right front wheelwell splash shield.
Windshield Wiper Motor	Behind left front strut tower.

Buick LeSabre Custom 2003 - SENDING UNITS & SENSORS

Buick LeSabre Custom 2003 SENDING UNITS & SENSORS LOCATION

Component	Location
A/C Refrigerant Pressure Sensor	Behind A/C compressor, on A/C line.
Air Temperature Sensor (Inside)	On dash, right of steering column. See Fig. 5 .
Air Temperature Sensor (Lower Left)	Behind left dash air discharge vent. See Fig. 5 .
Air Temperature Sensor (Lower Right)	Behind right dash air discharge vent.
Air Temperature Sensor (Outside)	At front center of engine compartment, on hood latch support.
Air Temperature Sensor (Upper Left)	Behind left dash air discharge vent.
Air Temperature Sensor (Upper Right)	Behind right dash air discharge vent. See Fig. 5 .
Automatic Level Control Sensor	Above left side of rear axle.
Engine Coolant Temperature (ECT) Sensor	On rear of engine, near thermostat housing. See Fig. 2 .
Engine Oil Pressure Sensor	On front of engine, below power steering pump.
Forward Discriminating Sensor	In engine compartment, on top of lower tie bar.
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1	In right exhaust manifold. See Fig. 1 .
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2	At rear of catalytic converter.
Inflatable Restraint Side Impact Sensor (Left)	At base of left "B" pillar, behind trim panel.
Inflatable Restraint Side Impact Sensor (Right)	At base of right "B" pillar, behind trim panel.
Intake Air Temperature Sensor	On left side of engine compartment, in air intake duct.
Knock Sensor Bank 1	On lower left side of engine block, near starter.
Knock Sensor Bank 2	On lower right side of engine block, near oil filter.
Lateral Acceleration Sensor	Under left rear seat. See Fig. 7 .
Manifold Absolute Pressure Sensor	On top front of engine, near ignition control module.
Mass Airflow (MAF) Sensor	On top of throttle body. See Fig. 2 .
Outside Moisture Sensor	Near inside rear view mirror.
Power Steering Pressure Sensor	Near rack & pinion unit input shaft.
Rear Compartment Occupant Sensor	Under center of rear package shelf.
Steering Wheel Position Sensor	On base of steering column.
Sunload Sensor Assembly	On top center of dash. See Fig. 5 .
Throttle Position (TP) Sensor	On throttle body assembly. See Fig. 2 .
Vehicle Speed Sensor	On transaxle right axle case extension.
Wheel Speed Sensor (Left Front)	Near left front brake rotor.
Wheel Speed Sensor (Left Rear)	On left rear wheel backing plate.
Wheel Speed Sensor (Right Front)	Near right front brake rotor.
Wheel Speed Sensor (Right Rear)	On right rear wheel backing plate.
Yaw Rate Sensor	Under rear shelf, behind lid hinge.

Buick LeSabre Custom 2003 - SOLENOIDS & SOLENOID VALVES

Buick LeSabre Custom 2003 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Brake Pressure Modulator Valve	At left front corner of engine compartment, under air cleaner housing.
Evaporative Emissions Canister Purge Solenoid	At top of engine, on left side of intake manifold.
Exhaust Gas Recirculation (EGR) Valve	On top right rear of engine. See Fig. 1 .
Rear Compartment Lid Release Actuator	On center rear of luggage compartment, near latch.
Secondary Air Injection By-Pass Valve Solenoid	On top of air pump.
Secondary Air Injection Solenoid	On top right of engine.

Buick LeSabre Custom 2003 - SWITCHES

Buick LeSabre Custom 2003 SWITCHES LOCATION

Component	Location
Brake Fluid Level Switch	In master cylinder reservoir. See Fig. 3 .
Engine Oil Level Switch	In left side of engine oil pan.
Park Brake Switch	On top of park brake pedal assembly.
Seat Belt Switch (Left Front)	In seat belt assembly, near floor.
Seat Belt Switch (Right Front)	In seat belt assembly, near floor.
Stoplamp/Auto Transmission Shift Lock Control Switch	On brake pedal bracket.
Stoplamp Switch	On brake pedal bracket.
Windshield Washer Fluid Level Switch	Behind right front wheelwell splash shield.

Buick LeSabre Custom 2003 - MISCELLANEOUS

Buick LeSabre Custom 2003 MISCELLANEOUS LOCATION

Component	Location
A/C Compressor Clutch Diode	On wiring harness, near A/C compressor.
Data Link Connector	Under lower left side of dash.
Head-Up Display (HUD)	On top left side of dash. See Fig. 5 .

Buick LeSabre Custom 2003 - CONNECTORS

Buick LeSabre Custom 2003 CONNECTORS LOCATION

Component	Location
C100	Top left of transmission. See Fig. 1 .
C101	Near left strut tower. See Fig. 3 .
C102	In left front corner of engine compartment.
C103	Top left of engine. See Fig. 2 .
C106	Near left strut tower.
C108	Near left headlight.
C109	Near right headlight.
C112	Above left strut tower.
C200	On underside of dash.
C201	Under upper dash trim pad.
C202	On steering column.
C204	Near HVAC blower motor.
C205	Near HVAC blower motor.
C301	Near bottom left corner.
C302	Under left front seat.
C303	Under rear of center console.
C305	Under rear seat.
C314	Under left front seat.
C318	Under left front seat.
C322	Behind right rear "C" pillar.
C329	Behind left rear "C" pillar.
C345	Behind rear seat back.
C400	Behind left rear taillight assembly.
C401	Behind right rear taillight assembly.
C402	Behind right rear taillight assembly.
C405	Behind right "C" pillar.
C406	Behind rear seat back.
C410	Behind rear seat back.
C420	In right rear wheelwell.
C500	In left front door pillar.
C503	Left front door.
C600	Near right front door, in pillar.
C603	Left front door.
C700	Left rear door pillar.
C701	Left rear door pillar.
C703	Left rear door pillar.
C800	Right rear door pillar.
C803	Right rear door.

Buick LeSabre Custom 2003 - GROUNDS

Buick LeSabre Custom 2003 GROUNDS LOCATION

Component	Location
G100	Left side of engine.
G102	Lower front of engine.
G103	On inner body panel.
G104	On top of transmission.
G105	Behind power steering pump.
G106	Near left strut tower. See Fig. 3 .
G107	In front of underhood fuse block.
G200	On left front door pillar.
G201	On right front door pillar.
G300	On forward crossmember.
G301	On forward crossmember.
G302	Under left side of rear seat.
G303	Under right front seat.
G305	Under right side rear seat.
G310	On right "C" pillar.
G401	On lower right corner of trunk.
G402	On lower left corner of trunk.
G404	Behind left rear "C" pillar.

Buick LeSabre Custom 2003 - SPLICES

Buick LeSabre Custom 2003 SPLICES LOCATION

Component	Location
SP301	In body harness, 8.5 cm from G300 breakout.
SP306	In body harness, 8 cm from rear fuse block breakout.
SP310	In body harness, 18 cm from rear fuse block breakout.
S100	In forward lamp harness, 4 cm from G103 breakout.
S102	In engine harness, 19 cm from right front wheel speed sensor breakout.
S103	In engine harness, 49 cm from left front wheel speed sensor breakout. See Fig. 1 .
S104	In engine harness, 42.5 cm from left front wheel speed sensor breakout. See Fig. 1 .
S105	In engine harness, 9.5 cm from PCM connector.
S106	In engine harness, 6.5 cm from idle air control valve connector breakout. See Fig. 2 .
S107	In engine harness, 23 cm from A/C clutch connector breakout. See Fig. 2 .
S108	In engine harness, 18 cm from A/C clutch connector breakout. See Fig. 2 .
S121	In forward lamp harness, 17 cm from C109.
S200	In I/P harness, 6 cm from instrument cluster breakout.
S201	In I/P harness, 23.5 cm from instrument cluster breakout.
S202	In I/P harness, 24 cm from IPM breakout.
S203	In I/P harness, 17.5 cm from IPM breakout.
S204	In I/P harness, 6.5 cm from sunload sensor assembly breakout.
S205	In I/P harness, 13.5 cm from HVAC breakout.
S206	In I/P harness, 6.5 cm from instrument cluster breakout.
S207	In I/P harness, 4 cm from sunload sensor assembly breakout.
S208	In I/P harness, 13 cm from sunload sensor assembly breakout.
S209	In I/P harness, 20 cm from radio breakout.
S210	In I/P harness, 13.5 cm outside from radio breakout.
S211	Body harness left side, 17 cm into steering column harness breakout.
S212	In body harness, 56 cm from rear of DIM breakout.
S214	In steering wheel harness, 5 cm from SIR coil.
S215	In body harness, 19.5 cm from P100.
S216	In body harness, 17 cm from P100.
S217	In body harness, 24 cm from P100.
S220	In HVAC harness, 36.5 cm from C204 breakout.
S221	In HVAC harness, 30 cm from C204 breakout.
S222	In HVAC harness, 23.5 cm from C204 breakout.
S225	In steering column harness.
S226	In steering column harness.
S227	In steering column harness.
S251	In I/P harness, 30.5 cm from I/P integration module breakout.
S252	In I/P harness, 37 cm from I/P integration module breakout.
S253	In I/P harness, 6.5 cm outside from radio breakout.
S302	In body harness, 14.5 cm from left power seat breakout.
S303	In body harness, 18 cm from G300 breakout.
S304	In body harness, 11.5 cm from G300 breakout.
S305	In body harness, 31.5 cm from G300 breakout.
S307	In body harness, 1.5 cm from rear fuse block breakout.
S308	In body harness, 5.5 cm from rear fuse block breakout.
S309	In body harness. 12 cm from rear fuse block breakout.
S311	In body harness, 6.5 cm forward of cross-car breakout.
S312	In body harness, 6.5 cm rear of cross-car breakout.
S315	In left seat harness, 6.5 cm from left heated seat module connector breakout.
S317	In left seat harness, 11.5 cm from left seat harness.
S319	In left seat harness, 16 cm from left seat harness.
S320	In left seat harness, 21 cm from left seat harness.
S321	In left seat harness, 9.5 cm from left seat harness.
S322	In right seat harness, 9.5 cm from right seat harness.
S323	In left seat harness, 9.5 cm from right seat harness.
S324	In left seat harness, 9.5 cm from left seat harness.
S325	In driver's seat harness, 6 cm from power seat switch breakouts.
S327	In headliner harness, 17.9 cm from C329.
S328	In headliner harness, 17.3 cm from C329.
S329	In headliner harness, 15.6 cm from C329.
S330	In left lumbar harness, 5 cm from C14 connector.
S331	In left lumbar harness, 5 cm from C14 connector.
S401	In body harness, 31.5 cm from fuel tank harness breakout.
S411	In rear compartment lid harness, 34.5 cm from P410 breakout.
S412	In rear compartment lid harness, 6 cm from P410.
S413	In rear compartment lid harness, 10.5 cm from P410.
S500	In left front door trim harness, 19 cm from C503 breakout.
S501	In left front door trim harness, 19 cm from C503 breakout.
S602	In right front door harness, 10 cm from door module connector breakout.
S603	In right front door trim harness, 9 cm from C603 breakout.
S604	In right front door trim harness, 21 cm from C603 breakout.