GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Clutch

Right hand lower front of the engine, on the A/C compressor

Engine Controls Component Views

Engine Controls Connector End Views

A/C Clutch Diode

In the engine harness, between S107 and S106

Engine Controls Component Views

Engine Controls Connector End Views

A/C Pressure Sensor

Right hand front of the engine, near the A/C compressor on the hose assembly

Engine Controls Component Views

Engine Controls Connector End Views

ABS/TCC Switch

Under the left hand of the instrument panel, near the brake pedal

Antilock Brake System Component Views in Antilock Brake Systems

Antilock Brake System Connector End Views in Antilock Brake Systems

Camshaft Position (CMP) Sensor

Right hand of the engine, below the water pump

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (CKP) Sensor

Lower right hand of the engine, near the crank pulley

Engine Controls Component Views

Engine Controls Connector End Views

Cruise Control Module

Center rear of engine compartment, near power brake master cylinder

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

Under left hand of the instrument panel, left of steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electronic Brake and Traction Control Module (EBTCM)

Left hand front of the engine compartment, near the base of the radiator support

Antilock Brake System Component Views in Antilock Brake Systems

Antilock Brake System Connector End Views in Antilock Brake Systems

Engine Coolant Temperature (ECT) Sensor

Left hand front of the engine, near the thermostat housing

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Level Switch

Center front of the engine, in the engine oil pan

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Pressure Sensor

Right hand rear corner of the engine, below the power steering pump

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Evaporative Emissions (EVAP) Canister Purge Valve

Right hand rear of the engine, near the generator

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Vent Valve

Body harness to the rear compartment of the vehicle

Engine Controls Component Views

Engine Controls Connector End Views

Exhaust Gas Recirculation (EGR) Valve

Left hand rear of the engine, near the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injectors

Top of the engine, in the intake runners

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Tank Pressure Sensor

Mounted in the fuel tank unit

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Sender

Under center rear of the vehicle, in the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

Generator

Right hand of the engine, near the power steering pump

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Head-Up Display (HUD)

Left hand top of the instrument panel, under the upper instrument panel pad

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Center rear of the engine, in the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Under the center of the vehicle, near the rear of the catalytic converter

Engine Controls Component Views

Engine Controls Connector End Views

Idle Air Control (IAC) Valve

Left hand of the engine, in the top of the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control Module

Right hand top of the engine, under the ignition coils

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

Left hand of the instrument panel, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Intake Air Temperature (IAT) Sensor

Left hand front of the engine compartment, in the air intake duct

Engine Controls Component Views

Engine Controls Connector End Views

IP Fuse Block

Under the right hand of the instrument panel, near the rear of the instrument panel compartment

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Knock Sensor Bank 1

Lower front of the engine, near the starter motor

Engine Controls Component Views

Engine Controls Connector End Views

Knock Sensor Bank 2

Right hand rear of the engine, below the power steering pump

Engine Controls Component Views

Engine Controls Connector End Views

LH Cooling Fan Motor

Center front of the engine compartment, behind the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Manifold Absolute Pressure (MAP) Sensor

Left hand rear of the engine, near the exhaust gas recirculation valve

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

Center left hand of the engine, on the top of the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module (PCM)

Left hand front of the engine compartment, in the air cleaner housing

Engine Controls Component Views

Powertrain Control Module Connector End Views

Rear Fuse Block

Center right hand rear of the passenger compartment, under the rear seat cushion

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

RH Cooling Fan Motor

Center front of the engine compartment, behind the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Supercharger Bypass Valve (VIN  1)

Left hand front of the engine, near the engine oil fill

Engine Controls Component Views

Engine Controls Connector End Views

Throttle Position (TP) Sensor

Center left hand of the engine, on the front of the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Underhood Fuse Block

Right hand front of the engine compartment, near the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (VSS)

Right hand rear of the transaxle, below the power steering pump

Engine Controls Component Views

Engine Controls Connector End Views

C100 (20 cavities)

Engine harness to the transaxle harness, left hand front of the engine compartment below throttle body

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C101 (7 cavities)

Body harness to the engine harness, right hand rear of the engine compartment near the strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102 (10 cavities)

Body harness to the engine harness, left hand rear of the engine compartment near the washer reservoir

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C107 (8 cavities)

Engine harness to the ignition harness, right hand front of the engine near the ignition coils

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C111 (1 cavity)

Engine harness to the knock sensor harness, right hand rear of the engine below the power steering pump

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C113 (5 cavities)

Body harness to the forward lamp harness, left hand of the engine compartment near the windshield washer reservoir

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C116 (10 cavities)

Body harness to the body harness, right hand rear of the engine compartment near the windshield wiper motor

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (16 cavities)

Body harness to the instrument panel harness, under left hand of the instrument panel left of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C420 (7 cavities)

Under center rear of the vehicle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G100

Right hand front of the engine, under the Ignition Control Module bracket

Power and Grounding Component Views in Wiring Systems

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G101

Right hand rear of the engine, below the power steering pump

Power and Grounding Component Views in Wiring Systems

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G102

Center right hand front of the engine, near the starter motor

Power and Grounding Component Views in Wiring Systems

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G105

Right hand rear of engine compartment, near the base of the underhood junction block

Power and Grounding Component Views in Wiring Systems

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G202

Left hand front of the passenger compartment, under the kick panel trim plate

Power and Grounding Component Views in Wiring Systems

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G400

Right hand of the rear compartment, on the rear of the wheel house

Power and Grounding Component Views in Wiring Systems

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P100

Left hand rear of the engine compartment, near the base of the windshield washer reservoir

Harness Routing Views in Wiring Systems

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P102

Right hand rear of the engine compartment, below the windshield wiper motor

Harness Routing Views in Wiring Systems

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P403

Left hand rear of the rear compartment, near the back of the wheel house

Harness Routing Views in Wiring Systems

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P410

Right hand rear of the rear compartment, near the back of the wheel house

Harness Routing Views in Wiring Systems

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S105

In the engine harness, approx 47.5  cm (18.7 in) from the powertrain control module

Harness Routing Views in Wiring Systems

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S106

In the engine harness, approx 18  cm (7.0 in) from the A/C compressor clutch

Harness Routing Views in Wiring Systems

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S107

In the engine harness, approx 23  cm (9.0 in) from the A/C compressor clutch

Harness Routing Views in Wiring Systems

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S108

In the engine harness, approx 6  cm (2.3 in) from the cruise control module breakout

Harness Routing Views in Wiring Systems

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S115

In the engine harness, approx 15  cm (5.9 in) from cruise control module breakout

Harness Routing Views in Wiring Systems

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S135

In the ignition control module harness, approx 26.5 cm (10.4in) from the ignition control module

Harness Routing Views in Wiring Systems

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S136

In the ignition control module harness, approx 20  cm (7.8 in) from the ignition control module

Harness Routing Views in Wiring Systems

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S203

In the body harness, approx 6  cm (2.4 in) from the P500 pass-through breakout

Harness Routing Views in Wiring Systems

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S401

In the body harness, approx 80  cm (31.4 in) from the C305 connector

Harness Routing Views in Wiring Systems

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