Chevrolet Monte Carlo LS 1999 - 1999 GENERAL MOTORS Lumina & Monte Carlo

Chevrolet Monte Carlo LS 1999 - BUZZERS, RELAYS & TIMERS

Chevrolet Monte Carlo LS 1999 BUZZERS, RELAYS & TIMERS

Component	Component Location
A/C Compressor Clutch Relay	In engine wiring harness junction block No. 1.
Blower Motor Relay	Behind right side of dash. See Fig. 8 .
Cooling Fan Control Relay No. 1	In engine wiring harness junction block No. 1.
Cooling Fan Control Relay No. 2	In engine wiring harness junction block No. 1.
Cooling Fan Control Relay No. 3	In engine wiring harness junction block No. 2.
Door Lock Relay	Behind right side of dash.
Electronic Brake Control Relay	In engine wiring harness junction block No. 2.
Emergency Vehicle Front Lamp Flasher	Behind right side of dash, mounted on relay bracket.
Fuel Pump Relay	In engine wiring harness junction block No. 1.
Hazard Lamp/Turn Signal Lamp Flasher	Behind left side of dash.
Horn Relay	In engine wiring harness junction block No. 2.
Ignition System Relay	In engine wiring harness junction block No. 1.
Rear Window Defogger Relay	Behind right side of dash. See Fig. 8 .
Theft Deterrent Relay	Under right side of dash, above glove box.

Chevrolet Monte Carlo LS 1999 - CIRCUIT PROTECTION DEVICES

Chevrolet Monte Carlo LS 1999 CIRCUIT PROTECTION DEVICES

Component	Component Location
Circuit Breakers	On fuse block.
Engine Wiring Harness Junction Block No. 1	Forward of right front strut tower. See Fig. 7 .
Engine Wiring Harness Junction Block No. 2	Forward of left front strut tower. See Fig. 6 .
Fuse Block	On right side of dash.
Fusible Links (3.1L VIN M)	At starter solenoid. See Fig. 2 .
SEO Circuit Breaker Panel	Behind dash, on right side of blower motor.
SEO Fusible Links	In engine wiring harness junction block No. 2.
SEO Switch Panel Diode	In dash harness, approximately 12 cm from digital speedometer module connector breakout.

Chevrolet Monte Carlo LS 1999 - CONTROL UNITS

Chevrolet Monte Carlo LS 1999 CONTROL UNITS

Component	Component Location
Brake Modulator (ABS)	On left rear of engine compartment, mounted on master cylinder.
Cruise Control Module	On left strut tower.
Daytime Running Lamp (DRL) Control Module	Behind left side of dash, on electronic brake control module bracket.
Digital Speedometer Module	Inside the instrument cluster.
Electronic Brake Control Module (EBCM)	Behind dash, left of brake pedal bracket.
Engine Coolant Level Indicator Module	On right side of radiator.
HVAC Module	Behind right side of dash.
Ignition Control Module (3.1L VIN M)	Top right side of engine, at ignition coil. See Fig. 1 .
Ignition Control Module (3.8L VIN K)	Top left front of engine, at ignition coil.
Inflatable Restraint Sensing & Diagnostic Module (SDM)	Below front passenger seat.
Powertrain Control Module (PCM)	On right side of engine compartment, forward of strut tower.
Remote Control Door Lock Receiver (RCDLR)	Below right rear window trim panel.
Sun Roof Control Module	In roof.
Theft Deterrent Module	Behind dash, above glove box.

Chevrolet Monte Carlo LS 1999 - MOTORS

Chevrolet Monte Carlo LS 1999 MOTORS

Component	Component Location
Blower Motor	Behind right side of dash, in plenum.
Brake Motor (ABS)	In left rear of engine compartment, on brake master cylinder.
Door Lock Actuators	Near rear of each door.
Electric Actuators (2)	Behind dash, left & right ends of A/C-heater module.
Engine Coolant Fan Motor No. 1	Behind left side of radiator.
Engine Coolant Fan Motor No. 2	Behind right side of radiator.
Fuel Pump	In fuel tank.
Power Seat Motors	Under respective front seats.
Power Window Regulator Motors	In bottom center of each door.
Sun Roof Actuator	On center of windshield header.
Windshield Washer Pump	In windshield washer fluid reservoir. See Fig. 6 .
Windshield Wiper Motor	On left side of firewall, in engine compartment.

Chevrolet Monte Carlo LS 1999 - SENDING UNITS & SENSORS

Chevrolet Monte Carlo LS 1999 SENDING UNITS & SENSORS

Component	Component Location
A/C Refrigerant Pressure Sensor	On left front of engine compartment, on A/C line.
Automatic Transaxle Input Shaft Speed Sensor	In automatic transaxle.
Camshaft Position (CMP) Sensor (3.1L VIN M)	On front of engine, below intake plenum.
Camshaft Position (CMP) Sensor (3.8L VIN K)	On front of engine, above right side of crankshaft pulley. See Fig. 4 .
Crankshaft Position (CKP) Sensor (7X) (3.1L VIN M)	Lower right side of engine. See Fig. 1 .
Crankshaft Position (CKP) Sensor (7X) (3.8L VIN K)	Lower right side of engine.
Crankshaft Position (CKP) Sensor (24X) (3.1L VIN M)	At end of crankshaft, behind harmonic balancer. See Fig. 2 .
Crankshaft Position (CKP) Sensor (24X) (3.8L VIN K)	At end of crankshaft, behind harmonic balancer.
Daytime Running Lamp (DRL) Ambient Light Sensor	On right top of dash, near defogger air duct.
Engine Coolant Temperature (ECT) Sensor (3.1L VIN M)	Near coolant outlet, left rear of engine.
Engine Coolant Temperature (ECT) Sensor (3.8L VIN K)	Near coolant outlet, left rear of engine. See Fig. 5 .
Engine Oil Level Sensor (3.1L VIN M)	In center of engine oil pan.
Engine Oil Level Sensor (3.8L VIN K)	In left side of engine oil pan.
Fuel Level Sensor	In fuel tank.
Heated Oxygen Sensor (HO2S) No. 1 (3.1L VIN M)	In exhaust manifold, right side of engine.
Heated Oxygen Sensor (HO2S) No. 1 (3.8L VIN K)	In exhaust manifold, right side of engine.
Heated Oxygen Sensor (HO2S) No. 2 (3.1L VIN M)	In exhaust system, behind catalytic converter.
Heated Oxygen Sensor (HO2S) No. 2 (3.8L VIN K)	In exhaust system, behind catalytic converter.
Intake Air Temperature (IAT) Sensor	In air cleaner canister.
Knock Sensor (KS) Bank 1 (3.1L VIN M)	Lower left side of engine block, above starter. See Fig. 2 .
Knock Sensor (KS) Bank 2 (3.1L VIN M)	Lower right side of engine block, below exhaust manifold.
Knock Sensor (KS) Bank 1 (3.8L VIN K)	Lower left side of engine block, above starter.
Knock Sensor (KS) Bank 2 (3.8L VIN K)	Lower right side of engine block, below exhaust manifold.
Manifold Absolute Pressure (MAP) Sensor (3.1L VIN M)	On top rear of engine, on intake plenum.
Manifold Absolute Pressure (MAP) Sensor (3.8L VIN K)	On top front of engine, on intake plenum.
Mass Airflow (MAF) Sensor (3.1L VIN M)	On air intake, on rear of engine.
Mass Airflow (MAF) Sensor (3.8L VIN K)	On air intake, on rear of engine. See Fig. 5 .
Steering Wheel Position Sensor	On base of steering column.
Throttle Position (TP) Sensor (3.1L VIN M)	On throttle body assembly. See Fig. 3 .
Throttle Position (TP) Sensor (3.8L VIN K)	On throttle body assembly. See Fig. 5 .
Transaxle Fluid Temperature (TFT) Sensor	In automatic transaxle.
Vehicle Speed Sensor (VSS)	On right rear of engine compartment, end of transaxle.
Wheel Speed Sensors (4)	Behind each wheel hub.

Chevrolet Monte Carlo LS 1999 - SOLENOIDS & SOLENOID VALVES

Chevrolet Monte Carlo LS 1999 SOLENOIDS & SOLENOID VALVES

Component	Component Location
1-2 Shift Solenoid (1-2 SS) Valve	In automatic transaxle.
2-3 Shift Solenoid (2-3 SS) Valve	In automatic transaxle.
Automatic Transmission Shift Interlock (BTSI) Control Solenoid	Center console.
Brake Solenoid Valves (ABS)	On left rear of engine compartment, mounted to brake master cylinder.
Evaporative Emissions (EVAP) Canister Purge Solenoid Valve (3.1L VIN M)	On top right of engine, on intake plenum.
Evaporative Emissions (EVAP) Canister Purge Solenoid Valve (3.8L VIN K)	On top right side of engine, near center of valve cover.
Evaporative Emissions (EVAP) Canister Vent Solenoid Valve	Behind left rear fascia splash shield, in wheel well.
Exhaust Gas Recirculation (EGR) Valve (3.1L VIN M)	Top rear of engine. See Fig. 3 .
Exhaust Gas Recirculation (EGR) Valve (3.8L VIN K)	Top right rear of engine.
Idle Air Control (IAC) Valve (3.1L VIN M)	On throttle body assembly. See Fig. 3 .
Idle Air Control (IAC) Valve (3.8L VIN K)	On throttle body assembly. See Fig. 5 .
Pressure Control Solenoid Valve	Inside automatic transaxle.
Rear Compartment Lid Lock Release Solenoid	In center of trunk lid.
Steering Column Brake Transmission Shift Interlock (BTSI) Solenoid	In steering column, near ignition switch.
Torque Converter Clutch Pulse Width Modulation Solenoid (TCC PWM SOL) Valve	In transaxle valve body.
Torque Converter Clutch Solenoid (TCC SOL) Valve	In transaxle valve body.
Vacuum/Electric Solenoid	Behind dash, right side of plenum.

Chevrolet Monte Carlo LS 1999 - SWITCHES

Chevrolet Monte Carlo LS 1999 SWITCHES

Component	Component Location
Automatic Transaxle Fluid Pressure Manual Valve Position Switch	In automatic transaxle.
Brake Fluid Level Indicator Switch	On left side of brake fluid reservoir.
Cruise Control Release Switch	On brake pedal support.
Engine Oil Pressure Indicator Switch (3.1L VIN M)	On left side of engine, above starter. See Fig. 2 .
Engine Oil Pressure Indicator Switch (3.8L VIN K)	On lower right front of engine, on oil filter housing.
Park Brake Indicator Switch	Part of park brake assembly.
Park/Neutral Position Switch	Mounted to top of steering column, near gear selector.
Rear Compartment Lid Ajar Indicator Switch	On center rear of rear compartment lid.
Seat Belt Switch	In driver's seat belt assembly.
Stoplamp Switch	On brake pedal support.
Transaxle Range Switch	Top of transaxle.

Chevrolet Monte Carlo LS 1999 - MISCELLANEOUS

Chevrolet Monte Carlo LS 1999 MISCELLANEOUS

Component	Component Location
A/C Compressor Clutch Diode	About 10 cm from A/C compressor clutch.
Auxiliary Power Drop Connector	Taped in harness, behind right side of dash.
Blower Motor Resistors	Behind right side of dash, in plenum.
Data Link Connector (DLC)	Below dash, right of steering column.
Emergency Vehicle Rear Window Panel Lamp Relay Panel	Below rear package shelf.
Fuel Injectors (3.1L VIN M)	Top of engine, at each intake port.
Fuel Injectors (3.8L VIN K)	Top of engine, at each intake port.
Remote Battery Stud (Negative)	On left front of engine compartment. See Fig. 6 .
Remote Battery Stud (Positive)	On right front of engine compartment. See Fig. 7 .
RKE Programming Connector	In rear compartment, taped to harness near antenna mast.
Seat Belt/Ignition Key/Lamps (Warning) Alarm	Behind right side of dash, on right end of A/C-Heater module. See Fig. 8 .

Chevrolet Monte Carlo LS 1999 - CONNECTORS

Chevrolet Monte Carlo LS 1999 CONNECTORS

Component	Component Location
C100 (Black, 36 Pin)	Near right strut tower. See Fig. 7 .
C102 (Black, 10 Pin)	Near generator.
C110 (Black, 8 Pin)	Above ignition control module.
C111 (Black, 7 Pin)	On left side of transaxle housing.
C113 (Gray, 14 Pin)	On left side of transaxle housing.
C156 (Black, 3 Pin)	Near left strut tower.
C171 (Black, 2 Pin)	Near windshield washer pump breakout. See Fig. 6 .
C200 (Gray, 41 Pin)	Behind right side of dash.
C201 (Black, 17 Pin)	On right side of steering column.
C210 (Gray, 1 Pin)	Near SEO circuit breaker panel.
C213 (Black, 4 Pin)	On right side of brake pedal support.
C219 (Black, 23 Pin)	On right side of brake pedal support.
C240 (Black, 10 Pin)	Behind center of dash.
C299 (Gray, 1 Pin)	Left side of dash.
C301 (Black, 23 Pin)	On left "A" pillar.
C302 (Black, 23 Pin)	On right "A" pillar.
C313 (Black, 2 Pin)	Under left front seat.
C355 (Black, 8 Pin)	On left "B" pillar.
C356 (Black, 8 Pin)	On right sunshade.
C398 (Black, 2 Pin)	Near right sunshade.
C400 (Blue, 8 Pin)	Below right sill panel of rear compartment.
C404 (4 Pin)	Behind right side of rear seat.
C405 (Black, 6 Pin)	Below center rear of vehicle, above fuel tank.
C410 (4 Pin)	Below left side of rear package shelf.
C412 (1 Pin)	Behind right side of rear seat.
C430 (Black, 4 Pin)	Center rear of rear compartment lid.

Chevrolet Monte Carlo LS 1999 - GROUNDS

Chevrolet Monte Carlo LS 1999 GROUNDS

Component	Component Location
G101	Left side of radiator support.
G102	Right side of radiator support.
G111 (3.1L VIN M)	On transaxle stud.
G111 (3.8L VIN K)	Below ignition control module.
G113	On transaxle stud.
G117	On transaxle stud.
G201	On right side of brake pedal bracket.
G204	Below right side of dash.
G205	On left side of brake pedal.
G251	On right side of brake pedal bracket.
G301	At base of left "B" pillar.
G302	At base of right "B" pillar.
G306	At base of right "A" pillar.

Chevrolet Monte Carlo LS 1999 - SPLICES

Chevrolet Monte Carlo LS 1999 SPLICES

Component	Component Location
S102	Engine harness, 17 cm from engine wiring harness junction block breakout.
S105 (3.1L VIN M)	Engine harness, 20 cm from engine cooling fan breakout.
S105 (3.8L VIN K)	Engine harness, 8 cm from cruise control breakout.
S106 (3.1L VIN M)	Engine harness, 7 cm from C111 breakout.
S106 (3.8L VIN K)	Engine harness, 4 cm from powertrain control module.
S108	Engine harness, 6 cm from engine coolant level indicator module breakout.
S109 (3.1L VIN M)	Engine jumper harness, 2 cm from fuel injector No. 2 breakout.
S109 (3.8L VIN K)	Engine jumper harness, 4 cm from EGR valve.
S115 (4T60-E)	Automatic transaxle harness, 11 cm from C111.
S115 (4T65-E)	Automatic transaxle harness, 19 cm from C113.
S123	Forward lamp harness, 8 cm from right headlamp breakout.
S124	Forward lamp harness, 8 cm from left headlamp breakout.
S132	Wiper harness, at windshield washer pump breakout.
S133	Wiper harness, 4 cm from windshield washer pump breakout.
S134	Wiper harness, 20 cm from brake solenoid valves.
S137	Forward lamps harness, 15 cm from C200.
S142	Engine harness, 11 cm from PCM.
S156 (3.1L VIN M)	Engine harness, 34 cm from C102 breakout.
S156 (3.8L VIN K)	Engine harness, 17 cm from HO2S connector.
S159 (3.1L VIN M)	Engine harness, 5 cm from engine coolant level indicator module breakout.
S159 (3.8L VIN K)	Engine harness, 8 cm from engine coolant level indicator module breakout.
S164 (3.1L VIN M)	Engine harness, 4 cm from right engine coolant fan breakout.
S164 (3.8L VIN K)	Engine harness, 10 cm from engine coolant level indicator module.
S170	Wiper harness, 7 cm from brake motor breakout.
S171	Wiper harness, 4 cm from windshield washer pump breakout.
S201	I/P harness, 4 cm from fuse block breakout.
S202	Instrument harness, 15 cm from C240 breakout.
S209	I/P harness, 5 cm from C201 breakout.
S211	I/P harness, 4 cm from radio breakout.
S224	I/P harness, 4 cm from theft deterrent module breakout.
S227	I/P harness, 41 cm from radio connector.
S228	I/P harness, 19 cm from fuse block.
S233	I/P harness, 4 cm from compartment lamp breakout.
S237	I/P harness, 5 cm from blower motor relay breakout.
S240	I/P harness, 4 cm from C219 breakout.
S243	I/P harness, 4 cm from C100 breakout.
S245	I/P harness, 21 cm from fuse block.
S247	I/P harness, 11 cm from blower motor relay breakout.
S263	I/P harness, 25 cm from fuse block.
S298	I/P harness, 11 cm from accessory switch.
S299	I/P harness, 13 cm from headlamp switch breakout.
S303	Cross-body harness, 17 cm from G302 breakout.
S305	Cross-body harness, 7 cm from C371 breakout.
S306	Cross-body harness, 66 cm from G302 breakout.
S308	Cross-body harness, 10 cm from C302 breakout.
S318	Cross-body harness, 7 cm from seat belt switch breakout.
S375	Console harness, 5 cm from cigar lighter breakout.
S390 (W/Sun Roof)	Roof harness, 4 cm from courtesy lamp breakout.
S390 (W/O Sun Roof)	Roof harness, 17 cm from dome lamp breakout.
S391	Roof harness, 4 cm from inside rear view mirror breakout.
S399	Sun roof harness, between C398 & sun roof control module connector.
S402	Rear body harness, 13 cm from license lamp breakout.
S406	Cross-body harness, 15 cm from left rear radio speaker breakout.
S501	Left front door harness, 4 cm from window regulator motor breakout.
S504	Left front door harness, 12 cm from window switch breakout.
S604	Right front door harness, 12 cm from window switch breakout.