GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch Coil

Part of the A/C compressor, lower right front of the engine

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC System - Manual

A/C Compressor Clutch Diode

Spliced into engine wiring harness, approximately 15 cm (6 in) from the A/C compressor clutch coil connector

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HVAC Connector End Views in HVAC System - Manual

A/C Refrigerant Pressure Sensor

Left side of the engine compartment, on the accumulator

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC System - Manual

Automatic Transaxle

Lower left side of the engine compartment

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Bank 1 Knock Sensor (KS)

Front of the engine, above the starter

Engine Controls Component Views

Engine Controls Connector End Views

Camshaft Position (CMP) Sensor

Right side of the engine, above the pulley

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (CKP) Sensor (24X)

Right side of the engine, at end of the crankshaft, behind the harmonic balancer

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (CKP) Sensor (7X)

Lower rear of the center of the engine block

Engine Controls Component Views

Engine Controls Connector End Views

Cruise Control Module

Left side of the engine compartment, mounted on the strut tower

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

On the bottom of the IP, right of the steering column

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Engine Coolant Fan Motor 1

Behind the left side of the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Fan Motor 2

Behind the left side of the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Temperature (ECT) Sensor

Top left side top of the engine, below the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Level Indicator Switch

Center of the engine oil pan

Engine Controls Component Views

Engine Controls Connector End Views

Engine Wiring Harness Junction Block 1

Right side of the engine compartment, forward of the strut tower

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Engine Wiring Harness Junction Block 2

Right side of the engine compartment, forward of the strut tower

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Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

Top front of the engine, near the center of the valve cover

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Vacuum Switch

Top rear of the engine, on the intake manifold, below the ignition control module

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emission (EVAP) Canister Vent Solenoid Valve

Behind the left rear fascia splash shield, behind the wheel well

Engine Controls Component Views

Engine Controls Connector End Views

Exhaust Gas Recirculation (EGR) Valve

Upper right side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injectors

Top of the engine at each cylinder intake port

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Tank

Below the rear of the vehicle

Engine Controls Component Views

Engine Controls Connector End Views

Fuse Block

Right side of the IP, in the right front door opening

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Generator

Top rear right side of the engine

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor (HO2S) 1

Rear of the engine, in the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor (HO2S) 2

In the exhaust system, behind the catalytic converter

Engine Controls Component Views

Engine Controls Connector End Views

Heater and A/C Control

Center of the IP

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC System - Manual

Idle Air Control Valve (IAC)

Top of the engine, front of the throttle assembly

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control (IC) Module

Top right front of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

Left side of the IP

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

Left front of the engine compartment, on the air intake duct

Engine Controls Component Views

Engine Controls Connector End Views

Knock Sensor

Front of the engine, above the starter

Engine Controls Component Views

Engine Controls Connector End Views

Manifold Absolute Pressure (MAP) Sensor

Top rear of the engine, on the intake plenum rear ignition module

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

Left front of the engine, in the air cleaner duct

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module (PCM)

Right side of the engine compartment, forward of the strut tower

Engine Controls Component Views

Powertrain Control Module Connector End Views

Radio

Center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Seat Belt / Ignition Key / Lamps (Warning) Alarm

Behind the IP, on the right side of the heater-A/C module

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Stoplamp Switch

Below the left side of the IP, in the right side of the brake pedal bracket

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Theft Deterrent Module

Behind the right side of the IP, above the IP compartment

Theft Deterrent System Component Views in Theft Deterrent

Theft Deterrent System Connector End Views in Theft Deterrent

Throttle Position (TP) Sensor

Top of the engine, on the throttle assembly

Engine Controls Component Views

Engine Controls Connector End Views

Transaxle Range (TR) Switch

Left rear of the engine, on the transaxle

Engine Controls Component Views

Engine Controls Connector End Views

Vehicle Speed Sensor (VSS)

Right rear of the engine, on the transaxle

Engine Controls Component Views

Engine Controls Connector End Views

C100 (36 cavities)

Engine harness to IP harness, in the right side of the dash, near the strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102 (10 cavities)

Engine wiring harness to fuel injector wiring harness, top of the engine, near the generator

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C108 (5 cavities)

Engine wiring harness to fuel injector harness, on the right rear of the engine compartment, near the generator

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C111 (7 cavities)

Engine to automatic transaxle harness, left side of the engine compartment, top of the transmission

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C155 (4 cavities)

Engine wiring harness to wiper wiring harness, on the right rear of the engine compartment, near C100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C156 (3 cavities)

Engine wiring harness to wiper wiring harness

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Inline Harness Connector End Views in Wiring Systems

C200 (102 cavities)

IP wiring harness to crossbody wiring harness, behind the right side of the IP, near the shroud

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C400 (8 cavities)

Crossbody harness to rear body harness, below the right sill panel of the rear compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (6 cavities)

Crossbody harness to fuel tank harness, below the center rear of the vehicle, above the fuel tank

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G111

Lower left front of the engine, on the transaxle stud, near the starter

Harness Routing Views in Wiring Systems

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G113

Lower left front of the engine on the transaxle stud, near the starter

Harness Routing Views in Wiring Systems

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G117

Lower left front of the engine on the transaxle stud, above the starter

Harness Routing Views in Wiring Systems

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G201

Behind the IP, on the right side of the brake pedal bracket

Harness Routing Views in Wiring Systems

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G301

Above base of the left B-pillar

Harness Routing Views in Wiring Systems

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P400

Right rear of the rear compartment

Harness Routing Views in Wiring Systems

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P405

Rear underside of the vehicle, above the fuel tank

Harness Routing Views in Wiring Systems

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S105

Engine wiring harness, below the engine coolant fans, approximately 13 cm (5 in) from engine coolant fan 1 breakout

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S106

Engine wiring harness, on the left side of the engine compartment, above the transaxle, approximately 7 cm (3 in) from C111 (automatic transaxle connector)

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S107

Engine wiring harness, above the ignition control module, approximately 2 cm (1 in) from the ignition control module C2 breakout

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S109

Engine jumper harness, below the intake plenum, approximately 2 cm (1 in) from the fuel injector 2 breakout

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S115 (4T60-E)

Automatic transaxle harness, inside the transaxle, approximately 11 cm (4 in) from C111

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S115 (4T65-E)

Automatic transaxle harness, inside the transaxle approximately 19 cm (7 in) from C113

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S116

Engine wiring harness, at right front corner of the engine compartment, approximately 4 cm (2 in) from the PCM breakout

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S121

Engine jumper harness, below the intake plenum, approximately 2 cm (1 in) from the PCM breakout

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S122

Engine wiring harness, on the right side of the engine compartment, approximately 15 cm (6 in) from the PCM breakout

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S128

Engine wiring harness, on the right side of the engine compartment, approximately 15 cm (6 in) from the PCM breakout

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S139

Engine wiring harness, on the right side of the engine compartment, approximately 17 cm (7 in) from the PCM breakout

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S142

Engine wiring harness, on the right side of the engine compartment, approximately 11 cm (4 in) from the PCM breakout

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S146

Engine wiring harness, on the right side of the engine compartment, approximately 15 cm (6 in) from the PCM breakout

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S155

Engine wiring harness, at right side of the radiator, approximately 7 cm (3 in) from the U/H Accessory Wiring Junction Block 1 breakout

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S156

Engine wiring harness, near the generator, approximately 34 cm (3 in) from the C102 breakout

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S157

Engine wiring harness, at right side of the radiator, approximately 16 cm (6 in) from the U/H electrocal center 1 breakout

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S158

Engine wiring harness, at right side of the radiator, approximately 10 cm (4 in) from the U/H electrocal center 1 breakout

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S163

Engine wiring harness, at right side of the radiator, approximately 10 cm (4 in) from the right engine coolant fan breakout

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S165 (VIN M)

Engine wiring harness, front of the transaxle, approximately 7  cm (3 in) from C111

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S165 (VIN K)

Engine wiring harness, front of the transaxle, approximately 7  cm (3 in) from C113

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S170

Wiper wiring harness, near the left strut tower, approximately 7 cm (3 in) from the brake motor breakout

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S171

Wiper wiring harness, along the left front frame rail, approximately 4 cm (2 in) from the wiper/washer pump breakout

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S202

IP wiring harness, below the center of the IP, approximately 15 cm (6 in) from the C240 breakout

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S206

IP wiring harness, below the IP compartment, approximately 11 cm (4 in) from the blower motor relay breakout

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S209

IP wiring harness, behind the right side of the driver knee bolster, approximately 5 cm (2 in) from the C201 breakout

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S211

IP wiring harness, behind the right side of the instrument cluster, approximately 4 cm (2 in) from the radio breakout

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S237

IP wiring harness, below the IP compartment, approximately 5 cm (2 in) from the blower motor relay breakout

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S425

Fuel tank wiring harness, below the rear of the vehicle, approximately 43 cm (17 in) from C405

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