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 A/C

HVAC Connector End Views

in HVAC A/C

A/C Condenser Fan Relay

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

HVAC Component Views

in HVAC A/C

--

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

--

Crankshaft Position Sensor

Lower front of the engine in front of the oil pan

--

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 DLC

Data Link Communications Connector End Views

in DLC

EGR Valve

Rear of the intake manifold

--

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

--

Engine Coolant Temperature (ECT) Sensor

Left front side of the engine in the thermostat housing

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 Switch (Automatic Transmission)

Top of the transfer case

Transfer Case Control Component Views

in Transfer Case

--

Four Wheel Drive Switch (Manual Transmission)

Top of the transfer case

Transfer Case Control Component Views

in Transfer Case

--

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

--

Fuel Injector #2

Top right side of the cylinder head

Engine Controls Component Views

--

Fuel Injector #3

Top right side of the cylinder head

Engine Controls Component Views

--

Fuel Injector #4

Top right side of the cylinder head

Engine Controls Component Views

--

Fuel Sender Assembly

Mounted to the top of the fuel tank

Instrument Panel, Gages, and Console Component Views

in Instrument Panel,Gauges And Console

Engine Controls Connector End Views

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 3

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Switch

On the top of the steering wheel column

--

--

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

--

Power and Grounding Connector End Views

in Wiring Systems

Main Relay

Left side of the instrument panel above the junction block

--

--

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

Lower right side of the engine compartment in the power steering pump

Engine Controls Component Views

--

Throttle Position (TP) Sensor

On the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

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 Manual

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

C205

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

C211

Main harness to the right front door harness near the right front piller molding

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

C213

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

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

--

G103

Right rear of the engine compartment mounted to the intake manifold

Harness Routing Views

in Wiring Systems

--

G105

Right front of the core support near the horn

Harness Routing Views

in Wiring Systems

--

G200

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

Harness Routing Views

in Wiring Systems

--

G201

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

Harness Routing Views

in Wiring Systems

--

G400 (2-Door)

Inside the rear door near the license plate lamps

Harness Routing Views

in Wiring Systems

--

P100

Behind the right side of the instrument panel on the bulkhead

Harness Routing Views

in Wiring Systems

--

P200

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

Harness Routing Views

in Wiring Systems

--

P201

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

Harness Routing Views

in Wiring Systems

--

P400 (2-Door)

Right rear quarter panel

Harness Routing Views

in Wiring Systems

--

P401

Rear of the vehicle to the right of the left side frame rail

Harness Routing Views

in Wiring Systems

--

S100

Engine Harness

Harness Routing Views

in Wiring Systems

--

S101

Engine Harness

Harness Routing Views

in Wiring Systems

--

S102

Engine Harness

Harness Routing Views

in Wiring Systems

--

S103

Engine Harness

Harness Routing Views

in Wiring Systems

--

S104

Engine Harness

Harness Routing Views

in Wiring Systems

--

S105

Engine Harness

Harness Routing Views

in Wiring Systems

--

S106

Engine Harness

Harness Routing Views

in Wiring Systems

--

S107

Engine Harness

Harness Routing Views

in Wiring Systems

--

S108

Engine Harness

Harness Routing Views

in Wiring Systems

--

S111

Fuel Injector Jumper Harness

Harness Routing Views

in Wiring Systems

--

S201

Main Harness

Harness Routing Views

in Wiring Systems

--

S205

Main Harness

Harness Routing Views

in Wiring Systems

--

S206

Main Harness

Harness Routing Views

in Wiring Systems

--

S210

Main Harness

Harness Routing Views

in Wiring Systems

--

S214

Main Harness

Harness Routing Views

in Wiring Systems

--

S215

Main Harness

Harness Routing Views

in Wiring Systems

--

S217

Main Harness

Harness Routing Views

in Wiring Systems

--

S218

Main Harness

Harness Routing Views

in Wiring Systems

--

S219

Main Harness

Harness Routing Views

in Wiring Systems

--

S248

I.P. Harness

Harness Routing Views

in Wiring Systems

--

S250

I.P. Harness

Harness Routing Views

in Wiring Systems

--

S255

I.P. Harness

Harness Routing Views

in Wiring Systems

--

S258

I.P. Harness

Harness Routing Views

in Wiring Systems

--

S260

I.P. Harness

Harness Routing Views

in Wiring Systems

--

S266

Main Harness

Harness Routing Views

in Wiring Systems

--

S300

Floor Harness

Harness Routing Views

in Wiring Systems

--

SP200

Main Harness

Harness Routing Views

in Wiring Systems

--

SP201

Main Harness

Harness Routing Views

in Wiring Systems

--