Buick LeSabre Limited 1999 - 1999 GENERAL MOTORS Bonneville, Eighty Eight, LeSabre & LSS

Buick LeSabre Limited 1999 - BUZZERS, RELAYS & TIMERS

Buick LeSabre Limited 1999 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C Clutch Relay	On center rear of engine compartment, below right underhood fuse block. See Fig. 4 .
Automatic Level Control Relay	At right side of rear compartment, near wheelhouse. See Fig. 12 .
Blower Relay	On center rear of engine compartment, below right underhood fuse block. See Fig. 4 .
Fuel Pump Relay	On right I/P fuse block.
Hazard Flasher	Under left side of dash, to right of steering column.
High Blower Relay	On center rear of engine compartment, below right underhood fuse block. See Fig. 4 .
High Speed Fan Control Relay	On rear of engine compartment, below left underhood fuse block. See Fig. 4 .
Horn Relay	On center rear of engine compartment, below right underhood fuse block. See Fig. 4 .
Low Speed Engine Cooling Fan Relay	On rear of engine compartment, below left underhood fuse block. See Fig. 4 .
Perimeter Lighting Relay	Behind right side of dash, near rear of glove box. See Fig. 11 .
Power Antenna Relay	In luggage compartment, on power antenna.
Starter Enable Relay	Under left side of dash, above I/P fuse block.
Theft Deterrent Relay	Under left side of dash, above I/P fuse block.
Turn Signal Flasher	Under left side of dash.

Buick LeSabre Limited 1999 - CIRCUIT PROTECTION DEVICES

Buick LeSabre Limited 1999 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
A/C Clutch Diode	On wiring harness, near A/C compressor.
Brake Warning Diode	Behind left side of dash, right of steering column.
I/P Fuse Block	Behind left side of dash, on dash panel sound insulator. See Fig. 9 .
Left Underhood Fuse Block	On center rear of engine compartment, near firewall. See Fig. 4 .
Right I/P Fuse Block	Behind right side of dash.
Right Underhood Fuse Block	On center rear of engine compartment, near firewall. See Fig. 4 .
Steering Column Fuse Holder	Near base of steering column.

Buick LeSabre Limited 1999 - CONTROL UNITS

Buick LeSabre Limited 1999 CONTROL UNITS LOCATION

Component	Location
Audio Amplifier	Under center of dash, near back of radio.
Blower Control Module	On right side of firewall, near blower motor. See Fig. 7 .
Body Control Module (MALL)	Behind right side of dash, near rear of glove box. See Fig. 11 .
Brake Lamp Driver Module	Under right side of dash. See Fig. 11 .
Cruise Control Module	On left side of firewall. See Fig. 8 .
Electronic Brake (& Traction) Control Module (EBCM/EBTCM)	On left front of engine compartment.
Electronic Compass Module	Under left side of rear shelf.
Electronic Suspension Control Module	Below left front seat.
Fuel Pump Module (3.8L VIN 1)	On front left side of luggage compartment.
Head-Up Display (HUD) Module	On top left side of dash.
Heater & A/C Programmer	Under right side of dash, near glove box.
Ignition Control Module (ICM) (3.8L VIN K)	On top left front of engine. See Fig. 2 .
Ignition Control Module (ICM) (3.8L VIN 1)	On top left front of engine. See Fig. 6 .
Inflatable Restraint Sensing & Diagnostic Module (SDM)	Below right front seat.
Interior Lamp Control Module	Under left side of dash, on knee bolster. See Fig. 10 .
Lamp Control Module (LCM)	In center of dash, below center heater outlets.
Lamp Driver Module (LDM)	Under right side of dash, near rear of glove box.
Lamp Monitor Control Module	In center of dash, near radio.
Memory Seat/Mirror (MSM) Module	Under driver's seat.
PASS Key II Theft Deterrent Module	Behind right side of dash, near rear of glove box.
Powertrain Control Module (PCM)	Near air cleaner housing.
Radio Antenna Module	On left rear sail panel.
Remote Dimmer Module	Behind left side of dash, right of steering column.
Remote Function Actuator (RFA) Module	Behind right side of dash, near rear of glove box. See Fig. 9 .
Sun Roof Control Module	Near right front of sun roof opening. See Fig. 14 .
Theft Deterrent Module	Behind right side of dash, near rear of glove box.
Transmission Position Decoder Module	Under front of center console.

Buick LeSabre Limited 1999 - MOTORS

Buick LeSabre Limited 1999 MOTORS LOCATION

Component	Location
Automatic Level Control Compressor	Below rear of vehicle, right of rear frame rail. See Fig. 13 .
Blower Motor	On center rear of engine compartment, below left underhood fuse block. See Fig. 7 .
Engine Cooling Fan Motor (Left/Right)	In front of engine compartment, behind radiator.
Idle Air Control (IAC) Valve (3.8L VIN K)	On throttle body assembly. See Fig. 3 .
Idle Air Control (IAC) Valve (3.8L VIN 1)	On throttle body assembly. See Fig. 6 .
Power Antenna	On right side of luggage compartment.
Sun Roof Actuator	In front center of passenger compartment, above headliner. See Fig. 14 .
Temperature Actuator	Under right side of dash, on right of HVAC module.
Windshield Washer Pump	In bottom of windshield washer reservoir.
Windshield Wiper/Washer Module	On left rear of engine compartment, near brake master cylinder. See Fig. 8 .

Buick LeSabre Limited 1999 - SENDING UNITS & SENSORS

Buick LeSabre Limited 1999 SENDING UNITS & SENSORS LOCATION

Component	Location
A/C Pressure Sensor	On hose assembly, near A/C compressor.
Ambient Light Sensor	In left center of dash, in defroster grille.
Ambient Temperature Sensor	On lower radiator rail.
Automatic Level Control Sensor	Under rear of vehicle, near rear suspension. See Fig. 13 .
Camshaft Position (CMP) Sensor (3.8L VIN K)	On front of engine, below water pump. See Fig. 2 .
Camshaft Position (CMP) Sensor (3.8L VIN 1)	On front of engine, below water pump. See Fig. 6 .
Crankshaft Position (CKP) Sensor (3.8L VIN K)	On front of engine, behind crank pulley. See Fig. 2 .
Crankshaft Position (CKP) Sensor (3.8L VIN 1)	On front of engine, behind crank pulley. See Fig. 6 .
Engine Coolant Temperature (ECT) Sensor (3.8L VIN K)	On rear of engine, near thermostat housing. See Fig. 2 .
Engine Coolant Temperature (ECT) Sensor (3.8L VIN 1)	On rear of engine, near thermostat housing. See Fig. 6 .
Fuel Sender	On top of fuel tank.
Fuel Tank Pressure Sensor	On top of fuel tank.
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 (3.8L VIN K)	In right exhaust manifold. See Fig. 1 .
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 (3.8L VIN 1)	In right exhaust manifold. See Fig. 5 .
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (3.8L VIN K)	Near front of catalytic converter.
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (3.8L VIN 1)	Near front of catalytic converter.
Inflatable Restraint Front End Discriminating Sensor	On center of upper radiator support.
Inside Air Temperature Sensor	In left knee bolster, right of steering column. See Fig. 10 .
Intake Air Temperature (IAT) Sensor (3.8L VIN K)	On left side of engine compartment, in air intake duct. See Fig. 3 .
Intake Air Temperature (IAT) Sensor (3.8L VIN 1)	On left side of engine compartment, in air intake duct.
Knock Sensor (KS) Bank 1 (3.8L VIN K)	On lower front of engine block, near starter.
Knock Sensor (KS) Bank 1 (3.8L VIN 1)	On lower front of engine block, near starter.
Knock Sensor (KS) Bank 2 (3.8L VIN K)	On lower rear of engine block, near oil filter. See Fig. 1 .
Knock Sensor (KS) Bank 2 (3.8L VIN 1)	On lower rear of engine block, near oil filter.
Lateral Accelerometer	Below driver's seat.
Manifold Absolute Pressure (MAP) Sensor (3.8L VIN K)	On top front of engine, near ignition control module. See Fig. 2 .
Manifold Absolute Pressure (MAP) Sensor (3.8L VIN 1)	On top right side of engine, above valve cover. See Fig. 5 .
Mass Airflow (MAF) Sensor (3.8L VIN K)	On top of throttle body. See Fig. 3 .
Mass Airflow (MAF) Sensor (3.8L VIN 1)	On top of throttle body. See Fig. 6 .
Sunload Sensor	On top of dash, in defroster grille.
Throttle Position (TP) Sensor (3.8L VIN K)	On throttle body assembly. See Fig. 2 .
Throttle Position (TP) Sensor (3.8L VIN 1)	On throttle body assembly. See Fig. 6 .
Vehicle Speed Sensor (VSS)	On right front of transaxle, below power steering pump.
Wheel Speed Sensor (4)	On wheel hub assembly.

Buick LeSabre Limited 1999 - SOLENOIDS & SOLENOID VALVES

Buick LeSabre Limited 1999 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Brake Pressure Modulator Valve (BPMV)	On left front of engine compartment, near base of radiator support.
Evaporative Emissions (EVAP) Canister Purge Valve (3.8L VIN K)	On top of engine, near generator. See Fig. 2 .
Evaporative Emissions (EVAP) Canister Vent Valve (3.8L VIN K)	On left front of engine compartment, on top of vapor canister.
Exhaust Gas Recirculation (EGR) Valve (3.8L VIN K)	On top rear of engine, near throttle body. See Fig. 1 .
Exhaust Gas Recirculation (EGR) Valve (3.8L VIN 1)	On top rear of engine, near throttle body.
Heater & A/C Vacuum Solenoid	Under right side of dash, on HVAC case.
Inflator Air Solenoid Valve	On right front of luggage compartment, near wheelhouse. See Fig. 12 .
Rear Compartment Lid Release Actuator	On center rear of luggage compartment, near latch.
Shift Interlock Actuator	On base of steering column.
Supercharger By-Pass Valve (3.8L VIN 1)	On top rear left of engine, near engine oil fill. See Fig. 6 .
Variable Steering Actuator	In rear of engine compartment, on power steering rack.

Buick LeSabre Limited 1999 - SWITCHES

Buick LeSabre Limited 1999 SWITCHES LOCATION

Component	Location
ABS/TCC Switch	Near brake pedal.
Brake Fluid Level Switch	In master cylinder reservoir.
Coolant Level Switch	In right radiator tank.
Engine Oil Level Switch (3.8L VIN K)	In left side of engine oil pan. See Fig. 2 .
Engine Oil Level Switch (3.8L VIN 1)	In left side of engine oil pan. See Fig. 6 .
Engine Oil Pressure Switch (3.8L VIN K)	On front of engine, below power steering pump. See Fig. 1 .
Engine Oil Pressure Switch (3.8L VIN 1)	On front of engine, below power steering pump. See Fig. 5 .
Hood Ajar Switch	On left side of radiator support.
Inflator Switch	Center rear of luggage compartment.
Park Brake Switch	On top of park brake pedal assembly.
Park/Neutral Position (PNP) Switch	On rear of transaxle, below EGR valve.
Stoplight/BTSI Switch	Near brake pedal.
Windshield Washer Fluid Level Switch	On left side of engine compartment, in windshield washer fluid reservoir.

Buick LeSabre Limited 1999 - MISCELLANEOUS

Buick LeSabre Limited 1999 MISCELLANEOUS LOCATION

Component	Location
Blower Motor Resistor	On center rear of engine compartment, below right underhood fuse block. See Fig. 7 .
Data Link Connector (DLC)	Under left side of dash, on dash sound insulator.
Daytime Running Lamps (DRL) Resistor	On left front side of engine compartment, near left horn.

Buick LeSabre Limited 1999 - CONNECTORS

Buick LeSabre Limited 1999 CONNECTORS LOCATION

Component	Location
C100 (Gray, 20 Pin)	Below throttle body.
C101 (Black, 66 Pin)	Near right strut tower.
C107 (Black, 8 Pin)	Near ignition coils.
C119 (1 Pin)	Near EBTCM.
C120 (Light Gray, 2 Pin)	Left rear of engine compartment.
C121 (Light Gray, 2 Pin)	Right rear of engine compartment.
C122 (Black, 5 Pin)	Right front of engine compartment.
C123 (Gray, 5 Pin)	Left front of engine compartment.
C200 (Black, 116 Pin)	Under center of dash.
C202 (Natural, 48 Pin)	Left of steering column.
C205 (Black, 8 Pin)	On top of front pillar.
C206 (3 Pin)	Under center of dash.
C221 (3 Pin)	On top of front pillar. See Fig. 14 .
C301 (Black, 2 Pin)	Under right front seat.
C302 (Black, 2 Pin)	Under left front seat.
C303 (2 Pin)	Under left front seat.
C304 (Blue, 8 Pin)	Under front of center console.
C312 (Black, 2 Pin)	Under left front seat.
C313 (2 Pin)	Under right front seat.
C323 (2 Pin)	Under right front seat.
C345 (Black, 2 Pin)	Under left front seat.
C360 (2 Pin)	Under console trim plate.
C400 (Black, 4 Pin)	Left rear of rear compartment.
C401 (Black, 4 Pin)	Center rear of rear compartment.
C402 (4 Pin)	Right rear of rear compartment.
C404 (6 Pin)	Left rear of rear compartment.
C405 (6 Pin)	Right rear of rear compartment.
C406 (Black, 3 Pin)	Left rear of rear compartment.
C410 (Black, 3 Pin)	Left rear of rear compartment.
C411 (3 Pin)	Right rear of rear compartment.
C430 (Black, 3 Pin)	Left rear of rear compartment lid.
C431 (Black, 3 Pin)	Right rear of rear compartment lid.
C440 (Black, 6 Pin)	Under right side of vehicle.
C502 (Black, 6 Pin)	Lower front of left front door.
C503 (3 Pin)	Lower front of left front door.
C602 (Black, 3 Pin)	Lower front of right front door.
C603 (Black, 6 Pin)	Lower front of right front door.
C702 (Black, 4 Pin)	Lower front of left rear door.
C802 (Black, 4 Pin)	Lower front of right rear door.

Buick LeSabre Limited 1999 - GROUNDS

Buick LeSabre Limited 1999 GROUNDS LOCATION

Component	Location
G100	Under ignition control module bracket.
G101	Below power steering pump.
G102	Near battery.
G104	Near air cleaner housing.
G105	Near battery.
G106	Near air cleaner housing.
G201	Behind right kick panel trim plate.
G202	Behind left kick panel trim plate.
G301	Under right front seat. See Fig. 14 .
G402	On rear edge of wheelwell.

Buick LeSabre Limited 1999 - SPLICES

Buick LeSabre Limited 1999 SPLICES LOCATION

Component	Location
S100	In engine harness, 34 cm from G101 breakout.
S104	In body harness, 25 cm from cooling fan relay. See Fig. 7 .
S106	In engine harness, 6 cm from A/C compressor clutch.
S108	In body harness, 37.5 cm from C121.
S110	In engine harness, 6.5 cm from generator harness breakout.
S114 (VIN 1)	In engine harness, 11 cm from fuel injector breakout.
S114 (VIN K)	In engine harness, 12 cm from heated oxygen sensor connector breakout.
S121 (VIN K)	In engine harness, 32 cm from C101.
S123 (VIN 1)	In engine harness, 53.5 cm from C101.
S126	In engine harness, 13 cm from mass air flow sensor.
S128	In body harness, 6.5 cm from engine cooling fan breakout.
S130	In engine harness, 25.5 cm from C101.
S150	In headlamp harness, 10 cm from C123.
S151	In headlamp harness, 10 cm from C122.
S201	In body harness, 10.5 cm from C101 breakout.
S202	In body harness, 4 cm from C101 breakout.
S203	In body harness, 43.5 cm from I/P fuse block.
S204	In I/P harness, 10.5 cm from instrument cluster C2 breakout.
S205	In body harness, 63.5 cm from I/P fuse block.
S206	In I/P harness, 60 cm from radio breakout.
S207	In body harness, 12 cm from center I/P harness channel breakout.
S211	In body harness, 4 cm from C202 breakout.
S213 (Buick)	In I/P harness, 4 cm from C200 breakout.
S213 (Oldsmobile)	In I/P harness, 26 cm from C200.
S213 (Pontiac)	In I/P harness, 6 cm from I/P compartment light breakout.
S214 (Buick)	In I/P harness, 10.5 cm from C200 breakout.
S214 (Oldsmobile)	In I/P harness, 30 cm from C200.
S214 (Pontiac)	In I/P harness, 6.5 cm from I/P compartment light breakout.
S215	In body harness, 73.5 cm from I/P fuse block.
S217	In body harness, 20 cm from C202.
S218	In body harness, 49.5 cm from left footwell harness channel.
S223	In body harness, 4 cm from IPC breakout.
S224	In I/P harness, 17 cm from radio breakout.
S225	In body harness, 49.5 cm from left footwell harness channel.
S227	In body harness, 17 cm from left kick wall channel.
S229	In I/P harness, 26 cm from C200.
S234 (Buick)	In I/P harness, 10 cm into C200 breakout.
S234 (Oldsmobile)	In I/P harness, 32 cm from C200.
S234 (Pontiac)	In I/P harness, 3 cm from radio breakout.
S237	In body harness, 22 cm from center I/P harness channel breakout.
S240	In body harness, 12 cm into heater & A/C programmer breakout.
S241	In body harness, 40 cm from interior lamp control module breakout.
S242 (Buick)	In I/P harness, 4 cm into instrument cluster breakout.
S242 (Pontiac)	In I/P harness, 7.5 cm from instrument cluster breakout.
S243	In I/P harness, 18 cm from C200.
S249 (Buick)	In I/P harness, 9 cm from instrument cluster breakout.
S249 (Oldsmobile)	In I/P harness, 17 cm from C200.
S249 (Pontiac)	In I/P harness, 3.5 cm from instrument cluster breakout.
S251	In body harness, 10 cm from right edge of I/P harness channel end.
S254	In body harness, 23.5 cm from left footwell harness channel.
S256	In body harness, 33.5 cm from interior lamp control module breakout.
S262	In body harness, 27.5 cm from P100.
S270	In body harness, 8 cm from right edge of I/P harness channel end.
S271	In body harness, 12 cm into C101 breakout.
S273	In body harness, 17 cm into C101 breakout.
S276	In I/P harness, 43 cm from C200.
S279	In body harness, 2 cm from I/P harness channel end.
S282	In body harness, 56.5 cm from I/P fuse block.
S287	In cigar lighter harness.
S288	In body harness, 39 cm from footwell harness channel.
S292	In body harness, 62.5 cm from left kick wall channel.
S293	In body harness, 7 cm from I/P harness channel end.
S295	In body harness, 7 cm from left edge of I/P harness channel end.
S297	In body harness, 23.5 cm from instrument cluster breakout.
S299 (Buick)	In I/P harness, 12 cm into instrument cluster breakout.
S299 (Pontiac)	In I/P harness, 12.5 cm into instrument cluster breakout.
S307	In body harness, 33 cm from G201 breakout.
S308	In body harness, 33 cm from GT201 breakout.
S314	In console harness, 10 cm from C304.
S332	In headliner harness, 23.5 cm from automatic day-night mirror breakout.
S334	In headliner harness, 73.0 cm from courtesy light.
S400 (Buick)	In body harness, 121.5 cm from P408.
S400 (Oldsmobile)	In body harness, 10 cm from G402 breakout.
S400 (Pontiac)	In body harness, 10 cm from G402 breakout.
S401	In left taillamp harness.
S402	In left taillamp harness.
S403	In left taillamp harness.
S405	In right taillamp harness.
S415	In body harness, 22.5 cm from P403.
S419	In body harness, 12.5 cm from P408.
S428	In rear compartment lid harness.
S430	In left rear lamp harness.
S432	In left rear lamp harness.
S435	In left rear side marker harness, 11.5 cm from P410.
S436	In right rear side marker harness, 11.5 cm from P410.
S437	In left rear side marker harness, 16 cm from P411.
S438	In right rear side marker harness, 16 cm from P440.
S441	In automatic level control harness, 10 cm from C440.
S501	In body harness, 43 cm from P500.
S603	In body harness, 5.5 cm from P500.