GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Control Module

Behind RH instrument panel, above evaporator case behind the IP compartment

HVAC Component Views in HVAC

HVAC Connector End Views in HVAC

Brake Pressure Modulator Valve (BPMV)

LH rear of engine compartment, below master cylinder

Antilock Brake System Component Views in Antilock Brakes

Antilock Brake System Connector End Views in Antilock Brakes

Camshaft Position (CMP) Sensor

RH rear of engine, on cylinder head next to fuel injector #4

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Crankshaft Position (CKP) Sensor

Bottom of engine, near crankshaft pulley

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Cruise Control Release Switch

Under LH IP, behind clutch pedal

Engine Controls Component Views in Engine Controls

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Cruise Control Release Switch (Manual)

Under LH instrument panel, mounted to upper clutch pedal bracket

Cruise Control Component Views in Cruise Control

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Cruise Control Servo

Rear of RH engine compartment near strut tower

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)- OBD 2

Under LH instrument panel, attached to knee bolster

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Data Link Connector (Underhood)

LH rear of engine compartment attached to strut tower

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Daytime Running Lamps (DRL) Control Module

Behind RH instrument panel, mounted above IP compartment

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Engine Coolant Temperature (ECT) Sensor

Left side of engine, below ignition coils

Engine Controls Component Views in Engine Controls

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EVAP Pressure Switching Solenoid

Under rear of vehicle, near EVAP canister

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

EVAP Canister

Right side of fuel tank

Engine Controls Component Views in Engine Controls

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EVAP Canister Purge Solenoid Valve

LH engine compartment, behind air cleaner (ACL)

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fuel Injector No. 1

Top of engine in number 1 intake port

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Engine Controls Connector End Views in Engine Controls

Fuel Injector No. 2

Top of engine in number 2 intake port

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Engine Controls Connector End Views in Engine Controls

Fuel Injector No. 3

Top of engine in number 3 intake port

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Engine Controls Connector End Views in Engine Controls

Fuel Injector No. 4

Top of engine in number 4 intake port

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Engine Controls Connector End Views in Engine Controls

Fuel Sender Assembly

Under rear of vehicle, in fuel tank

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Engine Controls Connector End Views in Engine Controls

Fuel Tank Pressure Sensor

Under rear of vehicle, near EVAP canister

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fuse And Relay Block 1

LH front engine compartment, left of air cleaner (ACL)

Power and Grounding Component Views in Wiring systems

Power and Grounding Connector End Views in Wiring Systems

Fuse And Relay Block 2

LH front engine compartment, left of battery

Power and Grounding Component Views in Wiring systems

Power and Grounding Connector End Views in Wiring Systems

Heated Oxygen Sensor 1 (HO2S1)

Rear of engine compartment, below exhaust manifold

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 2 (HO2S2)

Below vehicle, after three way catalytic converter (TWC)

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Idle Air Control (IAC) Valve

LH front of engine compartment, below throttle body

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 1

LH side of engine compartment, attached to cylinder head

Engine Controls Component Views in Engine Controls

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Ignition Coil 2

LH side of engine compartment rear of engine, attached to cylinder head

Engine Controls Component Views in Engine Controls

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Ignition Switch

Instrument panel, right of steering column

Engine Electrical Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Instrument Cluster Assembly

LH instrument panel

Instrument Panel, Gages, and Console Component Views in Instrument Panel Gauges and Console

Instrument Panel, Gages, and Console Connector End Views in Instrument Panel Gauges and Console

Intake Air Temperature (IAT) Sensor

In rear of air cleaner (ACL)

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Junction Block 1

Behind LH body hinge pillar trim panel

Power and Grounding Component Views in Wiring systems

Power and Grounding Connector End Views in Wiring Systems

Junction Block 2

LH instrument panel, behind storage box access cover

Power and Grounding Component Views in Wiring systems

Power and Grounding Connector End Views in Wiring Systems

Junction Block 3

Behind center instrument panel

Power and Grounding Component Views in Wiring systems

Power and Grounding Connector End Views in Wiring Systems

Knock Sensor

Front center of engine compartment below intake manifold

Engine Controls Component Views in Engine Controls

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Manifold Absolute Pressure (MAP) Sensor

Front of engine compartment, top of throttle body

HVAC Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Multifunction Alarm Module

Behind LH instrument panel, mounted to junction block 2

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Audible Warnings Connector End Views in IP, Gages, and Console Systems

Noise Filter

Behind center console, taped to engine accessory harness near PCM

Engine Controls Component Views in Engine Controls

Entertainment Connector End Views in Entertainment

Overdrive Switch

Center console, mounted in automatic transaxle control lever

Engine Controls Component Views in Engine Controls

Automatic Transmission Connector End Views in Transmission 4 Speed

Park/Neutral Position Switch

LH front of engine compartment, below battery attached to the transaxle

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Automatic Transmission Connector End Views in Transmission 4 Speed

Parking Brake Switch

In center console, mounted to parking brake lever

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Power Steering Pressure (PSP) Switch

RH rear of engine compartment, top of power steering pump

Engine Controls Component Views in Engine Controls

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Powertrain Control Module (PCM)

Front of center console, below radio

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Rear Defogger Switch

Center of instrument panel, above radio

Stationary Windows Component Views in Stationary windows

HVAC Connector End Views in HVAC

Starter

LH front of engine compartment, below intake manifold

Engine Electrical Component Views in Starting and Charging

Engine Electrical Connector End Views in Starting and Charging

Stoplamp Switch

Behind LH instrument panel, on brake pedal support bracket

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Torque Converter Clutch (TCC) Solenoid

Inside transaxle valve body

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Automatic Transmission Connector End Views in Transmission 4 Speed

Throttle Position Sensor (TP)

Front of engine compartment, mounted on rear of throttle body

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Turn Signal/Headlamp Switch

Mounted to upper steering column

Lighting Systems Component Views in Lighting Systems

Standard Wheel/Column Connector End Views in Steering

Vehicle Speed Sensor (VSS)

LH rear of transaxle

Engine Controls Component Views in Engine Controls

Automatic Transmission Connector End Views in Transmission 4 Speed

C100

Engine accessory harness to knock sensor jumper; RH front of engine compartment, below intake manifold

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C200 (14 cavities)

Engine main to cowl harness; behind LH body hinge pillar trim panel

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C201 (14 cavities)

Engine main to cowl harness; behind LH body hinge pillar trim panel

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C212 (19 cavities)

Cowl harness to engine accessory harness; attached to RH center instrument panel support bracket

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C213 (7 cavities)

Cowl harness to engine accessory harness; attached to RH center instrument panel support bracket

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C221 (10 cavities)

Instrument panel harness to floor harness; behind LH body hinge pillar trip panel

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C222 (12 cavities)

Engine accessory harness to instrument panel harness; attached to LH center instrument panel support bracket

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C223 (22 cavities)

Engine accessory harness to instrument panel harness; attached to LH center instrument panel support bracket

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C300 (6 cavities)

Floor harness to floor jumper harness; LH rear passenger compartment, behind the rear seat back trim panel

Harness Routing Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

G102

LH engine compartment, on strut tower

Power and Grounding Component Views in Wiring systems

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G103

LH front of engine compartment, behind battery

Power and Grounding Component Views in Wiring systems

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G105

Rear of engine compartment, on cylinder head

Power and Grounding Component Views in Wiring systems

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G106

Rear of engine compartment, on cylinder head

Power and Grounding Component Views in Wiring systems

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G202

Behind center instrument panel, on RH instrument panel support bracket

Power and Grounding Component Views in Wiring systems

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G203

Behind RH body hinge pillar trim panel

Power and Grounding Component Views in Wiring systems

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G204

Behind center instrument panel, on LH instrument panel support bracket

Power and Grounding Component Views in Wiring systems

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G300

Behind LH rear seat back trim panel

Power and Grounding Component Views in Wiring systems

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P100

Rear of engine compartment, in LH inner fender

Harness Routing Views in Wiring systems

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P101

Rear of engine compartment, in RH inner fender

Harness Routing Views in Wiring systems

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P102

Center of rear engine compartment

Harness Routing Views in Wiring systems

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P300

Under LH rear passenger seat

Harness Routing Views in Wiring systems

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P301

Rear compartment, in front of spare tire

Harness Routing Views in Wiring systems

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S204

Engine accessory harness approximately 5 cm (1 15/16 in) from P102

Harness Routing Views in Wiring systems

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S205

Engine accessory harness; approximately 5 cm (1 15/16 in) from P102

Harness Routing Views in Wiring systems

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S206

Engine accessory harness; approximately 5 cm (1 15/16 in) from P102

Harness Routing Views in Wiring systems

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S207

Engine accessory harness; approximately 5 cm (1 15/16 in) from P102

Harness Routing Views in Wiring systems

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S208

Cowl harness; near stoplamp switch breakout

Harness Routing Views in Wiring systems

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S209

Engine accessory harness; approximately 10 cm (3 7/8 in) from PCM breakout

Harness Routing Views in Wiring systems

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SP250

Cowl harness; attached to G203, behind RH body hinge pillar trim panel

Harness Routing Views in Wiring systems

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SP254

Engine main harness; taped to harness between C200 and C203 breakouts

Harness Routing Views in Wiring systems

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SP255

Instrument panel harness; top of LH instrument panel, behind instrument cluster assembly

Harness Routing Views in Wiring systems

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SP256

Instrument panel harness; center of instrument panel, attached to G204 at LH center support bracket

Harness Routing Views in Wiring systems

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SP257

Instrument panel harness; behind center instrument panel, near junction block 3

Harness Routing Views in Wiring systems

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SP258

Engine accessory harness to instrument panel harness; attached to LH center instrument panel support bracket

Harness Routing Views in Wiring systems

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SP259

Engine accessory harness; behind center instrument panel

Harness Routing Views in Wiring systems

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SP260

Engine accessory harness; behind center instrument panel

Harness Routing Views in Wiring systems

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