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

The center of the IP, above the radio

HVAC Component Views in HVAC

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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

At the 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 of the IP, taped to the IP harness

Lighting Systems Component Views in Lighting Systems

Engine Controls Connector End Views in Lighting Systems

Distributor

Left side of the engine

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Duty Check Data Link Connector

In the 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

Early Fuel Evaporation (EFE) Heater

Mounted between the intake manifold and the throttle body

Engine Controls Component Views

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Engine Coolant Temperature (ECT) Sensor

On the left side of the engine, mounted in the thermostat housing

Engine Controls Component Views

Engine Controls Connector End Views

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 (without ORVR)

Center of the engine bulkhead

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Engine Controls Connector End Views

EVAP Canister Vent Solenoid (with ORVR)

Top of the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

EVAP Tank Pressure Control Solenoid Valve (Without ORVR)

On the engine bulkhead, next to the EVAP canister

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Engine Controls Connector End Views

EVAP Tank Pressure Control Solenoid Valve (With ORVR)

Top of the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

Exhaust Gas Recirculation Vacuum Solenoid Valve (EGR SV)

Left side of the engine, next to the intake manifold

Engine Controls Component Views

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Exhaust Gas Recirculation (EGR) Bypass Valve

Left side of the engine, next to the intake manifold

Engine Controls Component Views

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Fuel Injector

In the engine throttle body

Engine Controls Component Views

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Fuel Injector Resistor

Left rear side of the engine compartment, attached to the bulkhead

Engine Controls Component Views

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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 Speed Control (ISC) Motor

Top of the engine, mounted to the throttle body

Engine Controls Component Views

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Ignition Control Module

Left side of the engine compartment, on the bulkhead near the strut tower

Engine Controls Component Views

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Ignition Coil

Left side of the engine compartment, on the bulkhead

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

Noise Suppressor Filter

Left rear of the engine compartment, taped to the harness, below the ignition control module

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 the 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

Throttle Position (TP) Sensor

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

Engine Controls Component Views

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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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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

C208 (8 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

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 fuel tank jumper harness, 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 fuel tank jumper harness, 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 fuel tank jumper harness, 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

Center of the rear side of the engine, on the intake manifold

Harness Routing Views in Wiring Systems

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G105 (VIN 6)

Center rear of engine, on the intake manifold

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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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S110

Main harness, approximately 5 cm (2 in) from the connector breakout of the ignition control module

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S111 (VIN 6)

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

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S118 (VIN 6)

Main harness, approximately 28 cm (11.5 in) from the connector breakout of the front wiper motor

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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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S120 (VIN 6)

Main harness, approximately 6 cm (2.4 in) from the connector breakout of the ignition coil

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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 (VIN 6)

Engine harness, approximately 14 cm (5.6 in) from the TP sensor breakout

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S129 (VIN 2)

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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S148

Main harness, approximately 23 cm (9.2 in) from the connector breakout of the MAP sensor

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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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S156

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

Harness Routing Views in Wiring Systems

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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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S168 (VIN 6)

Engine harness, approximately 4 cm (2 in) from the C113 breakout

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S169 (VIN 6)

Engine harness, approximately 4 cm (2 in) from the breakout of the EGR SV

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S170 (VIN 6)

Engine harness, approximately 11 cm (4.3 in) from P202

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S200 (VIN 6)

Main harness, approximately 15 cm (6 in) from the C208 breakout

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S202

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

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S204

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

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S218

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

Harness Routing Views in Wiring Systems

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S221

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

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 connector C3 of the instrument panel cluster assembly

Harness Routing Views in Wiring Systems

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S231

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

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S232

IP harness, approximately 4 cm (2 in) from the C205 breakout

Harness Routing Views in Wiring Systems

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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 connector breakout of the diode module

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 connector C3 of the instrument panel cluster assembly

Harness Routing Views in Wiring Systems

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S237

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

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 connector C3 of the instrument panel cluster assembly

Harness Routing Views in Wiring Systems

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S242

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

Harness Routing Views in Wiring Systems

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S245

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

Harness Routing Views in Wiring Systems

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S248

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

Harness Routing Views in Wiring Systems

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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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S257 (VIN 6)

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

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S261 (Manual Transaxle)

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

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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S315

Fuel tank jumper harness, approximately 10 cm (4 in) from P300

Harness Routing Views in Wiring Systems

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