GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Control Module

Below the right side of the IP, attached to the evaporator case

HVAC Component Views in HVAC

HVAC Connector End Views in HVAC

Blower Speed Selector Switch

Center of the IP, above the radio

HVAC Component Views in HVAC

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Camshaft Position Sensor

Cylinder head, near the ignition coil 2

Engine Controls Component Views

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Clutch Pedal Position (CPP) Switch (Manual Transaxle)

Mounted above the clutch pedal

Engine Electrical Component Views in Engine Electrical

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Crankshaft Position Sensor

Bottom of the engine, mounted to the engine, near the crankshaft pulley

Engine Controls Component Views

Engine Controls Connector End Views

Data Link Connector (DLC) OBD 2

Below the left side of the IP, near the center console

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Diode Module

Behind the center IP, taped to the IP harness

Lighting Systems Component Views in Lighting Systems

Engine Controls Connector End Views

Direct Clutch Solenoid (Automatic Transaxle)

Left rear side of the transaxle, attached to the valve body

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Duty Check Data Link Connector

Passenger compartment, taped to the harness, behind the IP compartment

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Engine Cooling Fan Motor

Left front side of the engine compartment, behind the radiator

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Cooling System Connector End Views in Engine Cooling

EVAP Canister Purge Valve

Center of the engine compartment, on the intake manifold

Engine Controls Component Views

Engine Controls Connector End Views

EVAP Canister Vent Solenoid

Top of the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

EVAP Tank Pressure Control Solenoid Valve

Top of the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injector No. 1

Top of the engine, in the intake port 1

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injector No. 2

Top of the engine, in the intake port 2

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injector No. 3

Top of the engine, in the intake port 3

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injector No. 4

Top of the engine, in the intake port 4

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Sender Assembly

In the fuel tank

Engine Controls Component Views

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

Fuel Tank Pressure Sensor

In the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

Fuse Box

Left side of the engine compartment, mounted on the left inner side of the fender, behind the relay box

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Heated Oxygen Sensor 1 (HO2S1)

Front of the engine in the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor 2 (HO2S2)

Below the vehicle, behind the three-way catalytic converter (TWC)

Engine Controls Component Views

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Idle Air Control (IAC) Valve

Top of the engine, mounted to the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coil 1

On the cylinder head, over spark plug 4

Engine Controls Component Views

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Ignition Coil 2

On the cylinder head, over spark plug 2

Engine Controls Component Views

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Ignition Switch

Right side of the steering column

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Instrument Panel Cluster Assembly

Left side of the IP

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

Intake Air Temperature (IAT) Sensor

Center of the engine compartment, attached to the air cleaner housing

Engine Controls Component Views

Engine Controls Connector End Views

Junction Block

Behind the left side of the IP

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Manifold Absolute Pressure (MAP) Sensor

Right rear of the engine compartment, on the bulkhead

Engine Controls Component Views

Engine Controls Connector End Views

Power Steering Pressure Switch

Right front side of the engine compartment, on the power steering pump

Engine Controls Component Views

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Powertrain Control Module (PCM)

Behind the right side of the IP, near the glove box

Engine Controls Component Views

Powertrain Control Module Connector End Views

Rear Defogger Switch

In the IP, to the left of steering column

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Stationary Windows Connector End Views in Stationary Windows

Relay Box

Left 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

2nd Brake Solenoid (Automatic Transaxle)

Left rear side of the transaxle, attached to the valve body

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Throttle Position (TP) Sensor

Right rear side of the engine, attached to the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Transaxle Range Switch (Automatic Transaxle)

Left side of the engine compartment, mounted to the top of the transaxle

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Automatic Transmission Connector End Views in Transmissions

Turn Signal/Combination Switch

On the steering column

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Lighting Systems Connector End Views in Lighting Systems

Vehicle Speed Sensor (VSS) (Automatic Transaxle)

Left side of the engine compartment, on the top of the transaxle

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C108 (2 Cavities) (Automatic Transaxle)

Engine harness to the transaxle solenoid jumper, on the left rear side of the transaxle

Harness Routing Views in Wiring Systems

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C112 (16 Cavities)

Main harness to the engine harness, in the right rear side of the engine compartment, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C113 (16 Cavities)

Main harness to the engine harness, in the right rear side of the engine compartment, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (12 Cavities)

Main harness to the IP harness, behind the left IP, near the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201 (14 Cavities)

Main harness to the floor harness, behind the left side of the IP, near the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (13 Cavities)

IP harness to the floor harness, behind the left side of the IP, near the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C204 (2 Cavities) (Manual Transaxle)

Main harness to the clutch pedal position switch, behind the left side of the IP

Harness Routing Views in Wiring Systems

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C205 (12 Cavities)

IP harness to the engine harness, behind the right side of the IP, near the powertrain control module (PCM)

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C211 (6 Cavities)

IP harness to the jumper of the blower speed selector switch, behind the center of the IP

Harness Routing Views in Wiring Systems

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C300 (2 Cavities)

Floor harness to the jumper harness of the fuel tank, under the rear passenger seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C310 (4 Cavities)

Floor harness to the jumper harness of the fuel tank, under the rear passenger seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C311 (3 Cavities)

Floor harness to the jumper harness of the fuel tank, under the rear passenger seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G102

Left front side of the engine compartment, on the left-front inner fender, near the battery

Harness Routing Views in Wiring Systems

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G104

Left end of the cylinder head

Harness Routing Views in Wiring Systems

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G203

Junction block case ground, under the left side of the IP

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G400 (2-Door)

Rear center of the luggage compartment

Harness Routing Views in Wiring Systems

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(4-Door)

Rear center of the luggage compartment

Harness Routing Views in Wiring Systems

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P200

Left rear engine compartment, on the bulkhead, near the brake master cylinder

Harness Routing Views in Wiring Systems

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P202

Center of the engine compartment, on the bulkhead

Harness Routing Views in Wiring Systems

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P300

Below the right rear passenger seat

Harness Routing Views in Wiring Systems

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S101

Main harness, approximately 11 cm (4.5 in) from the breakout of the brake fluid level switch

Harness Routing Views in Wiring Systems

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S111

Main harness, approximately 7 cm (2.8 in) from the ignition coil breakout

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S119

Main harness, approximately 50 cm (20 in) from the connector breakout of the front wiper motor

Harness Routing Views in Wiring Systems

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S126

Engine harness, approximately 8 cm (3.1 in) from P202

Harness Routing Views in Wiring Systems

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S127 (Manual Transaxle)

Engine harness, at the generator breakout

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(Automatic Transaxle)

Engine harness, 5 cm (2 in) from the starter breakout

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S129

Engine harness, approximately 2 cm (1 in) from the C113 breakout

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S130

Engine harness, approximately 5 cm (2 in) from the starter breakout

Harness Routing Views in Wiring Systems

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S131

Engine harness, approximately 9 cm (3.6 in) from the connector breakout of the generator

Harness Routing Views in Wiring Systems

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S151

Main harness, approximately 5 cm (2 in) from the relay box

Harness Routing Views in Wiring Systems

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S152

Main harness, approximately 19 cm (7.4 in) from the C113 breakout

Harness Routing Views in Wiring Systems

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S153

Main harness, approximately 13 cm (5.125 in) from the connector breakout of the front wiper motor

Harness Routing Views in Wiring Systems

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S154 (Automatic Transaxle)

Engine Harness, approximately 9 cm (3.6 in) from P202

Harness Routing Views in Wiring Systems

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S156

Engine harness, approximately 7 cm (3 in) from P202

Harness Routing Views in Wiring Systems

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S158 (Automatic Transaxle)

Engine harness, approximately 19 cm (1.5 in) from P202

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S159

Engine Harness, approximately 2 cm (1 in) from C113

Harness Routing Views in Wiring Systems

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S160

Engine Harness, approximately 20 cm (8 in) from P202

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S161

Engine harness, approximately 4 cm (2 in) from the generator breakout

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S163

Engine harness, approximately 2 cm (1 in) from the fuel injectors breakout

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S164

Engine harness, approximately 8 cm (3.125 in) from the breakout of the MAP sensor

Harness Routing Views in Wiring Systems

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S165

Engine harness, approximately 5 cm (2 in) from the starter breakout

Harness Routing Views in Wiring Systems

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S166

Engine harness, approximately 7 cm ( in) from the breakout of fuel injector No. 1

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S167

Engine harness, approximately 14 cm (6 in) from the C113 breakout

Harness Routing Views in Wiring Systems

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S202

Main harness, approximately 8 cm (3.125 in) from the breakout of the junction block connector C6

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S204

Main harness, approximately 8 cm (3.125 in) from the breakout of junction-block connector C5

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S208 (With ABS)

Main harness, approximately 12 (5 in) cm from the G201 breakout

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S218

IP harness, approximately 3 cm (1.19 in) from the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S221

IP harness, approximately 7 cm (3 in) from the breakout of IP cluster assembly connector C2

Harness Routing Views in Wiring Systems

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S222

IP harness, approximately 6 cm (2.375 in) from the breakout of the data link connector

Harness Routing Views in Wiring Systems

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S225

IP harness, approximately 2 cm (1 in) from the C200 breakout

Harness Routing Views in Wiring Systems

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S226

IP harness, approximately 3 cm (1.19 in) from the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S231

Main harness, approximately 15 (6 in) cm from P200

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S233

IP harness, approximately 8 cm (3.125 in) from the blower motor branch breakout

Harness Routing Views in Wiring Systems

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S234

IP harness, approximately 1 cm (0.375 in) from the breakout of the diode module connector

Harness Routing Views in Wiring Systems

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S235

IP harness, approximately 5 cm (2 in) from the C200 breakout

Harness Routing Views in Wiring Systems

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S236

IP harness, approximately 8 cm (3.125 in) from the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S237

IP harness, approximately 10 cm (4 in) from the breakout of the radio connector

Harness Routing Views in Wiring Systems

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S240

IP harness, approximately 6 cm (2.375 in) from the breakout of the data link connector

Harness Routing Views in Wiring Systems

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S241

IP harness, approximately 5 cm (2 in) from the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S242

IP harness, at the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S245

IP harness, approximately 12 cm (5 in) from the breakout of IP cluster assembly connector C3

Harness Routing Views in Wiring Systems

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S248

Engine harness, approximately 4 cm (2 in) from the breakout of powertrain control module (PCM) connector C1

Harness Routing Views in Wiring Systems

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S251 (With ABS)

Main harness, approximately 5 cm (2 in) from P200

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S252

IP harness, approximately 4 cm (2 in) from the breakout of the data link connector

Harness Routing Views in Wiring Systems

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S256

Main harness, near the breakout of connector C6 of the junction block

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S259

Engine harness, approximately 6 cm (2.375 in) from P202

Harness Routing Views in Wiring Systems

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S261 (Manual Transaxle)

Engine harness, approximately 4 cm (2 in) from the breakout of the PCM connectors

Harness Routing Views in Wiring Systems

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S262

Engine harness, approximately 5 cm (2 in) from P202

Harness Routing Views in Wiring Systems

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S263

Engine harness, approximately 3 cm (1.9 in) from the C205 breakout

Harness Routing Views in Wiring Systems

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S301 (2-Door)

Floor harness, approximately 20 cm (8 in) from the center console branch breakout

Harness Routing Views in Wiring Systems

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S311 (4-Door)

Floor harness, approximately 10 cm (4 in) from the C400 breakout

Harness Routing Views in Wiring Systems

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S315

Jumper harness of the fuel tank, approximately 10 cm (4 in) from P300

Harness Routing Views in Wiring Systems

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S316

Jumper harness of the fuel tank, approximately 20 cm (8 in) from P300

Harness Routing Views in Wiring Systems

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