GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

1-2 Shift Solenoid (1-2 SS) Valve

Inside the automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

2-3 Shift Solenoid (2-3 SS) Valve

Part of the automatic transmission/transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

A/C Compressor Clutch Coil

Part of the A/C compressor, mounted to the right front of the engine

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC Systems - Manual

A/C Compressor Clutch Diode

Spliced into the engine wiring harness, approximately 10 cm (4 in) from the A/C compressor clutch coil connector

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC Systems - Manual

A/C Refrigerant Pressure Sensor

At the right side of the engine compartment, below the accumulator

HVAC Component Views in HVAC System - Manual

HVAC Connector End Views in HVAC Systems - Manual

Automatic Transaxle

Lower left side of the engine compartment

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Automatic Transaxle Fluid Pressure Manual Valve Position Switch

Part of the automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

Automatic Transaxle Fluid Temperature (TFT) Sensor

Inside the automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

Automatic Transaxle Input Shaft Speed (A/T ISS) Sensor

Part of automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

Camshaft Position Sensor

At the right side of the engine, below the intake plenum

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Crankshaft Position (24X) Sensor

At the right side of the engine, at the end of the crankshaft, behind the harmonic balancer

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Crankshaft Position (7X) Sensor

Lower rear of the engine

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Cruise Control Module

Left side of the engine compartment, near 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 instrument panel, to the right of the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

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 right side of the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Temperature (ECT) Sensor

Left side at the top of the engine

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Engine Controls Connector End Views

Engine Oil Level Sensor

Center of the engine, above the starter

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

Power and Grounding Component Views in Wiring Systems

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Engine Wiring Harness Junction Block 2

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

Power and Grounding Component Views in Wiring Systems

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Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

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

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

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

Engine Controls Component Views

Engine Controls Connector End Views

Exhaust Gas Recirculation (EGR) Valve

Upper left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injectors

Top of the engine, at each of the cylinder intake ports

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 instrument panel, in the right front door opening

Power and Grounding Component Views in Wiring Systems

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Generator

Top of the right side of the engine

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor 1 (H02S 1)

Rear of the engine, in the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor 2 (H02S 2)

In the exhaust system, behind the catalytic converter

Engine Controls Component Views

Engine Controls Connector End Views

Heater-A/C Control

Center of the instrument panel

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

Idle Air Control (IAC) Valve

Top of the engine, front of the throttle assembly

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

Left side of the 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

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

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control (IC) Module

Top center rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Knock Sensor (KS)

Lower right rear of the engine, below the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Manifold Air Pressure (MAP) Sensor

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

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

Left front of the engine compartment, in the air cleaner duct

Engine Controls Component Views

Engine Controls Connector End Views

Park /Neutral Position (PNP) Switch

Mounted to the top of the steering column, near the gear selector

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

Pressure Control Solenoid (PC Sol) Valve

Part of the automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Related Connector End Views in Automatic Transaxle - 4T65-E

Radio

Center of the instrument panel

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Secondary Air Injection Pump Relay

In the engine harness, forward of the strut tower

Engine Controls Component Views

Powertrain Control Module Connector End Views

Secondary Air Injection Reaction (AIR) Pump Motor

In the forward lamp harness, on the left side, in front of the wheel well

Engine Controls Component Views

Powertrain Control Module Connector End Views

Secondary Air Injection Valve Solenoid

In the engine compartment, on top of the engine, near the generator breakout

Engine Controls Component Views

Powertrain Control Module Connector End Views

Stop Lamp Switch

Behind the instrument panel, on the brake pedal support

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Theft Deterrent Module

Behind the right side of the instrument panel, above the instrument panel 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

Powertrain Control Module Connector End Views

Torque Converter Clutch Pulse Width Modulation (TCC PWM SOL) Solenoid Valve

Part of the automatic transaxle

Automatic Transmission Electronic Component Views in Automatic Transaxle - 4T65-E

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

Vehicle Speed Sensor

Right rear side of the engine, on the transaxle

Engine Controls Component Views

Powertrain Control Module Connector End Views

C100 (36 cavities)

Engine harness to the instrument panel 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 harness to the 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

C113 (14 cavities)

Engine harness to the transmission/transaxle harness, mounted on the left side of the transmission/transaxle housing

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View in Automatic Transaxle - 4T65-E

C156 (3 cavities)

Engine harness to the wiper harness, left side of the engine compartment, near the strut tower

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Inline Harness Connector End Views in Wiring Systems

C160 (1 cavity)

Engine to forward lamp harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (102 cavities)

Instrument panel harness to the crossbody harnesses, mounted behind the right side of the instrument panel, near the shroud

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (6 cavities)

Crossbody harness to the 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

G101

Left side of the radiator support

Harness Routing Views in Wiring Systems

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G113

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

Harness Routing Views in Wiring Systems

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G117

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

Harness Routing Views in Wiring Systems

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G201

Behind the instrument panel, on the right side of the brake pedal bracket

Harness Routing Views in Wiring Systems

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G301

At the base of the left B-pillar

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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P425

Left rear of rear compartment

Harness Routing Views in Wiring Systems

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S102

Engine harness, at the right side of the radiator, approximately 17 cm (7 in) from the engine wiring harness junction block 1 breakout

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S105

Engine harness, approximately 20 cm (8 in) from the engine cooling fan 1 breakout

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S106

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

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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

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

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S116

Engine harness, at the 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 fuel injector and the breakout

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S142

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

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S156

Engine harness, near the generator, approximately 34 cm (13 in) from the C102 breakout

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S163

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

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S165

Engine harness, front of the transaxle, approximately 7 cm (3 in) from the engine ground breakout

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S171

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

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S202

Instrument harness, below the center of the instrument panel, approximately 15 cm (6 in) from the C240 breakout

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S209

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

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S211

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

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S217

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

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S233

Instrument panel harness, below the instrument panel compartment, approximately 4 cm (2 in) from the compartment lamp breakout

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S237

Instrument panel harness, below the instrument panel compartment, approximately 5 cm (2 in) from the blower motor relay breakout

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S243

Instrument panel harness, below the instrument panel compartment, approximately 4 cm (2 in) from the C100 breakout

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S305

Crossbody harness, on the left side of the rear seat, approximately 7 cm (3 in) from the C371 breakout

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S425

Fuel tank harness, approximately 43 cm (17 in) from C405

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