GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Control Module

Behind the center of the instrument panel on the heater case

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

A/C Condenser Fan Relay

Right side of the engine compartment near the fuse block and the battery

HVAC Component Views in HVAC Systems - Manual

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Camshaft Position Sensor

Left rear of the engine compartment on the cylinder head

Engine Controls Component Views

Engine Controls Connector End Views

Clutch Pedal Position (CPP) Switch (Manual Transmission)

Behind the left side of the instrument panel above the clutch pedal

Engine Electrical Component Views in Engine Electrical

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Crankshaft Position Sensor

In front of the flywheel above the crankshaft

Engine Controls Component Views

Engine Controls Connector End Views

Data Link Connector (DLC)-OBD2

Left side of the instrument panel inboard next to the transmission tunnel

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

EGR Valve

Rear of the intake manifold

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Engine Controls Connector End Views

Electronic Brake Control Module (EBCM) (with ABS)

Bolted to the Brake Pressure Modulator Valve(BPMV) in the left side of the engine compartment

Antilock Brake System Component Views in ABS

Antilock Brake System Connector End Views in ABS

Electrical Load Diode

Taped to the main harness behind the instrument panel compartment

Engine Controls Component Views

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Engine Coolant Temperature (ECT) Sensor

Left rear of the engine cylinder head in the coolant outlet pipe

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

Engine Controls Connector End Views

Evaporative (EVAP) Canister Purge Valve

Right front of the engine compartment on the inner fender behind the EVAP canister

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative (EVAP) Canister Vent Solenoid

Right front of the engine compartment on the inner fender behind the EVAP canister

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative (EVAP) Tank Pressure Control Solenoid Valve

Right side of the engine compartment near the fuse block

Engine Controls Component Views

Engine Controls Connector End Views

Four Wheel Drive Low Switch (Automatic Transmission)

Top of the transfer case

Transfer Case Control Component Views in Transfer Case

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Four Wheel Drive Switch (Automatic Transmission)

Top of the transfer case

Transfer Case Control Component Views in Transfer Case

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Four Wheel Drive Switch (Manual Transmission)

Top of the transfer case

Transfer Case Control Component Views in Transfer Case

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Front Drive Axle Actuator Pump

Right side of the lower core support

Transfer Case Control Component Views in Transfer Case

Transfer Case Control Connector End Views in Transfer Case

Fuel Injector #1

Top right side of the cylinder head

Engine Controls Component Views

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Fuel Injector #2

Top right side of the cylinder head

Engine Controls Component Views

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Fuel Injector #3

Top right side of the cylinder head

Engine Controls Component Views

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Fuel Injector #4

Top right side of the cylinder head

Engine Controls Component Views

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Fuel Tank Pressure Sensor

Mounted to the top of the fuel tank

Engine Controls Component Views

Engine Controls Connector End Views

Fuse Block

Right side of the engine compartment in front of the battery

Engine Electrical Component Views in Engine Electrical

Power and Grounding Connector End Views in Wiring Systems

Heated Oxygen Sensor 1 (HO2S1)

Left rear of the engine in the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor 2 (HO2S2)(US)

Below the vehicle after the 3-way catalytic converter (TWC)

Engine Controls Component Views

Engine Controls Connector End Views

Heated Oxygen Sensor 2 (HO2S2)(CAL)

Below the exhaust manifold before the 3-way catalytic converter (CAL)

Engine Controls Component Views

Engine Controls Connector End Views

Idle Air Control (IAC) Valve

Right side of the engine below the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coil 1

Top of the engine over spark plug 1

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coil 2

Top of the engine over spark plug 2

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coil 3

Top of the engine over spark plug 3

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coil 4

Top of the engine over spark plug 4

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Switch

On the top of the steering wheel column

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Input Shaft Speed Sensor(Automatic Transmission)

Left front side of the transmission

Automatic Transmission Electronic Component Views

in Automatic Transmission Manual

Automatic Transmission 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

Right front of the engine compartment in the air cleaner housing

Engine Controls Component Views

Engine Controls Connector End Views

Junction Block

Above the lower left door hinge trim panel

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Power and Grounding Connector End Views in Wiring Systems

Main Relay

Left side of the instrument panel above the junction block

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Manifold Absolute Pressure (MAP) Sensor

Rear of the engine compartment on the intake manifold

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

Left front of the engine compartment in the air cleaner (ACL) housing

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module (PCM)

Under the right side of the instrument panel below the blower motor

Engine Controls Component Views

Engine Controls Connector End Views

Power Steering Pressure Switch

Upper left side of the engine compartment in the power steering pump

Engine Controls Component Views

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Shift Program Switch(Automatic Transmission)

Right side of the center floor console

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Automatic Transmission Connector End Views in Automatic Transmission - 4 Speed-M41

Stoplamp Switch

Under the left side of the instrument panel above the brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Throttle Position (TP) Sensor

On the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Transmission Range Switch (Automatic Transmission)

Right side of the transmission

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Automatic Transmission Connector End Views in Automatic Transmission - 4 Speed-M41

Output Shaft Speed Sensor

Lower right rear side of the transmission

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Automatic Transmission Connector End Views in Automatic Transmission - 4 Speed-M41

Vehicle Speed Sensor (VSS)

Left side of the transmission in the adapter case

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

Automatic Transmission Connector End Views in Automatic Transmission - 4 Speed-M41

C101

A/C harness to the main harness on the right front fender panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

Main harness to the engine harness near the rear of the cylinder head

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

Main harness to the instrument panel harness near the left door hinge panel above the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203

Main harness to the main switch left lower side of the instrument panel near the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C204

Main harness to the instrument panel harness near the left door hinge panel above the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C206

Main harness to the instrument panel harness near the left door hinge panel above the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C207

Main harness to the instrument panel harness near the left door hinge panel above the junction block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C210

Engine harness to the main harness near the right side door hinge panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C212

Engine harness to the main harness near the right side door hinge panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C214

Main harness to the A/C module harness top right of the instrument panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C401

Floor harness to the fuel jumper harness near the fuel tank

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G102

Left rear of the cylinder head to the bulkhead

Harness Routing Views in Wiring Systems

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G103

Right rear of the engine compartment mounted to the intake manifold

Harness Routing Views in Wiring Systems

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G105

Right front of the core support near the horn

Harness Routing Views in Wiring Systems

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G200

Behind the left side of the instrument panel above the junction block

Harness Routing Views in Wiring Systems

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G201

Behind the right side of the instrument panel near the blower assembly

Harness Routing Views in Wiring Systems

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P100

Behind the right side of the instrument panel on the bulkhead

Harness Routing Views in Wiring Systems

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P200

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

Harness Routing Views in Wiring Systems

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P201

Right rear of the engine compartment on the bulkhead near the battery

Harness Routing Views in Wiring Systems

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P400 (2-Door)

Right rear quarter panel

Harness Routing Views in Wiring Systems

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P400 (4-Door)

Right rear quarter panel

Harness Routing Views in Wiring Systems

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S100

Engine Harness

Harness Routing Views in Wiring Systems

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S101

Engine Harness

Harness Routing Views in Wiring Systems

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S102

Engine Harness

Harness Routing Views in Wiring Systems

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S103

Engine Harness

Harness Routing Views in Wiring Systems

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S104

Engine Harness

Harness Routing Views in Wiring Systems

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S105

Engine Harness

Harness Routing Views in Wiring Systems

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S106

Engine Harness

Harness Routing Views in Wiring Systems

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S107

Engine Harness

Harness Routing Views in Wiring Systems

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S108

Engine Harness

Harness Routing Views in Wiring Systems

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S109 (Automatic Transmission)

Engine Harness

Harness Routing Views in Wiring Systems

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S110 (Automatic Transmission)

Engine Harness

Harness Routing Views in Wiring Systems

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S111

Fuel Injector Jumper Harness

Harness Routing Views in Wiring Systems

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S201

Main Harness

Harness Routing Views in Wiring Systems

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S205

Main Harness

Harness Routing Views in Wiring Systems

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S206

Main Harness

Harness Routing Views in Wiring Systems

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S210

Main Harness

Harness Routing Views in Wiring Systems

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S211

Main Harness

Harness Routing Views in Wiring Systems

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S213(Automatic Transmission)

Main Harness

Harness Routing Views in Wiring Systems

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S214

Main Harness

Harness Routing Views in Wiring Systems

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S216(Automatic Transmission With Cruise)

Main Harness

Harness Routing Views in Wiring Systems

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S218

Main Harness

Harness Routing Views in Wiring Systems

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S219

Main Harness

Harness Routing Views in Wiring Systems

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S220

Main Harness

Harness Routing Views in Wiring Systems

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S241

Main Harness

Harness Routing Views in Wiring Systems

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S248

IP Harness

Harness Routing Views in Wiring Systems

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S250

IP Harness

Harness Routing Views in Wiring Systems

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S255

IP Harness

Harness Routing Views in Wiring Systems

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S260

IP Harness

Harness Routing Views in Wiring Systems

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SP200

Main Harness

Harness Routing Views in Wiring Systems

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SP201

Main Harness

Harness Routing Views in Wiring Systems

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