GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch

On the right front side of the engine, on the A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Refrigerant Pressure Switch

In the right front of the engine compartment, on the A/C receiver/drier assembly

HVAC Component Views

HVAC Connector End Views

Backup Lamp

In the rear tail lamp assembly

Lighting Systems Component Views

Lighting Systems Connector End Views

Backup Lamp Switch (Manual Transmission)

In the left side of the engine compartment, on top of the transmission case

Lighting Systems Component Views

Lighting Systems Connector End Views

Battery

In the left side of the engine compartment

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

--

Battery Saver

Behind the driver side of I/P

Lighting Systems Component Views

Lighting Systems Connector End Views

Blower Motor

Below the passenger side of the instrument panel, in the HVAC module

HVAC Component Views

HVAC Connector End Views

Blower Motor Resistor

In the HVAC module, next to the blower motor

HVAC Component Views

HVAC Connector End Views

Blower Switch

In the center of the instrument panel, in the HVAC control assembly

HVAC Component Views

HVAC Connector End Views

Brake Fluid Level Switch

In the left rear of the engine compartment, in the brake master cylinder reservoir

Hydraulic Brake Component Views

Hydraulic Brake Connector End Views

Camshaft Position (CMP) Sensor (0.8L)

Inside the distributor

Engine Controls Component Views

Engine Controls Connector End Views

Camshaft Position (CMP) Sensor (1.0L)

On the top left side of the cylinder head, near the EGR valve

Engine Controls Component Views

Engine Controls Connector End Views

Central Door Lock (CDL) Relay

Behind the passenger side kick panel

Vehicle Access Component Views

Vehicle Access Connector End Views

Center High Mounted Stop Lamp (CHMSL)

In the lower center of the rear window

Lighting Systems Component Views

Lighting Systems Connector End Views

Cigar Lighter

In the lower center of the instrument panel, next to the ashtray

Displays and Gages Component Views

Displays and Gages Connector End Views

Clock/Trip Odo Switch

Center of I/P cluster below the speedometer

Displays and Gages Component Views

Displays and Gages Connector End Views

Contact Coil

In the steering column, below the steering wheel

SIR Component Views

SIR Connector End Views

Cooling Fan Low Speed Resistor

On the left side of the radiator support in front of the engine fuse block

Cooling System Component Views

Cooling System Connector End Views

Crankshaft Position (CKP) Sensor

On the lower front side of the engine block, near the transmission

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Data Link Connector (DLC)

Under the I/P compartment

Displays and Gages Component Views

Displays and Gages Connector End Views

Daytime Running Lamp (DRL) Module

Behind the left side of the instrument panel, near the I/P fuse block

Lighting Systems Component Views

Lighting Systems Connector End Views

Detection Coil

In the right side of the steering column, around the ignition key cylinder

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Dimmer Switch (RHD w/WU5)

In the driver side of the instrument panel, under the outboard vent

Lighting Systems Component Views

Lighting Systems Connector End Views

Defog Switch

In the center of the instrument panel, in the HVAC control assembly

Displays and Gages Component Views

Displays and Gages Connector End Views

Dome Lamp

In the front center of the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

Door Switch - Driver

On driver door

Theft Deterrent System Component Views

--

Door Switch - Left Rear

On left rear door

Theft Deterrent System Component Views

--

Door Switch - Passenger

On front passenger door

Theft Deterrent System Component Views

--

Door Switch - Right Rear

On right rear door

Theft Deterrent System Component Views

--

Driver Information Center (DIC)

Instrument panel with warning lamps

Displays and Gages Component Views

Displays and Gages Connector End Views

DRL Control Module

Left side of I/P above the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

DRL Relay

Under the left side of the instrument panel above the gas pedal, on the side of the I/P fuse block

Lighting Systems Component Views

Lighting Systems Connector End Views

Electronic Brake Control Module (EBCM)

In the right rear side of the engine compartment, on the frame rail

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Electronic Ignition (EI) System

Engine compartment, top front of the engine

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Engine Control Module (ECM)

Behind the driver knee bolster, near the steering column

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Control Module Connector End Views for the 0.8L engine

or

Engine Control Module Connector End Views for the 1.0L engine

Engine Coolant Temperature (ECT) Sensor

On the left side of the engine, on the coolant outlet

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Engine Cooling Fan

On the left side of the radiator

Cooling System Component Views

Cooling System Connector End Views

Evaporative Emission (EVAP) Canister Purge Solenoid

In the right rear of the engine compartment, on the cowl panel near the MAP sensor

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Evaporator Temperature Sensor

In the HVAC module, on the evaporator

HVAC Component Views

HVAC Connector End Views

Electronic Exhaust Gas Recirculation (EEGR) Valve

On the left rear side of the cylinder head

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fog Lamp Switch - Front

Part of the multifunction lever

Lighting Systems Component Views

Lighting Systems Connector End Views

Fog Lamp Switch - Rear

In the center of the instrument panel, above the HVAC controls

Lighting Systems Component Views

Lighting Systems Connector End Views

Fuel Injector 1

In the rear of the engine compartment, on the fuel rail

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fuel Injector 2

In the rear of the engine compartment, on the fuel rail

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fuel Injector 3

In the rear of the engine compartment, on the fuel rail

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fuel Injector 4 (1.0L)

In the rear of the engine compartment, on the fuel rail

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fuel Pump/Sender

Below the rear seat, in the fuel tank

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Fuse Block - I/P

In the driver side of the instrument panel, above the kickpanel

--

Electrical Center Identification Views

Fuse Block - Underhood

In the left rear of the engine compartment, on the strut tower

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Electrical Center Identification Views

Generator

On the lower right rear of the engine

Engine Electrical Component Views

Engine Electrical Connector End Views

Hazard Switch

In the center of the instrument panel, above the HVAC controls

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp - Left

On the left front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp - Right

On the right front of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Leveling Switch

In the driver side of the instrument panel, under the outboard vent

Lighting Systems Component Views

Lighting Systems Connector End Views

Headlamp Switch

On the left side of the steering column, on the turn signal multifunction switch

Lighting Systems Component Views

Lighting Systems Connector End Views

Heated Oxygen Sensor (HO2S) 1

In the exhaust manifold

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Heated Oxygen Sensor (HO2S) 2

In the exhaust pipe after the catalytic converter

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Hood Open Switch

In the left front side of the engine compartment, on the radiator support

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Horn

Behind the left side of the front fascia

Horn Component Views

Horn Connector End Views

Horn Switch

On the steering wheel, under airbag module

--

--

Idle Air Control (IAC) Valve

On the rear of the engine, on the throttle body

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Ignition Switch

On the right side of the steering column

--

--

Immobilizer

Left side of the I/P attached to the bottom side of the steering column

Immobilizer Component Views

Immobilizer Connector End Views

Intake Air Temperature (IAT) Sensor

Top of engine on the right back side of the valve cover

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Inflatable Restraint I/P Module

In the passenger side of the instrument panel

SIR Component Views

SIR Connector End Views

Inflatable Restraint Side Impact Module - Driver

In the side of the drivers seat back

SIR Component Views

SIR Connector End Views

Inflatable Restraint Side Impact Module - Passenger

In the side of the passengers seat back

SIR Component Views

SIR Connector End Views

Inflatable Restraint Side Impact Sensor - Driver

Attached to the drivers B-pillar behind the trim

SIR Component Views

SIR Connector End Views

Inflatable Restraint Side Impact Sensor - Passenger

Attached to the passengers B-pillar behind the trim

SIR Component Views

SIR Connector End Views

Inflatable Restraint Steering Wheel Module

In the steering wheel

SIR Component Views

SIR Connector End Views

Instrument Panel Cluster (IPC)

In the driver side of the instrument panel

Displays and Gages Component Views

Displays and Gages Connector End Views

Knock Sensor (KS) (0.8L)

On the rear of the engine block, next to the water inlet neck

Engine Controls Component Views

Engine Controls Connector End Views

License Plate Lamps

In the center left of the liftgate, above the license plate

Lighting Systems Component Views

Lighting Systems Connector End Views

Liftgate Ajar Switch

In tailgate, near license lamp

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Main Throttle Idle Actuator (1.0L)

On the rear of the engine, on the intake manifold

Engine Controls Component Views

Engine Controls Connector End Views

Manifold Absolute Pressure (MAP) Sensor

In the rear of the engine compartment, on the cowl panel

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Octane Selection Switch

Behind the driver side of the instrument panel, near the ECM

Engine Controls Component Views for the 0.8L engine

or

Engine Controls Component Views for the 1.0L engine

Engine Controls Connector End Views for the 0.8L engine

or

Engine Controls Connector End Views for the 1.0L engine

Oil Feeding Connector

In the left rear side of the engine compartment, next to the brake fluid reservoir

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Oil Pressure Switch

On the rear side of the engine block

Displays and Gages Component Views

--

Outside Rearview Mirror - Driver

On driver door

Mirror Component Views

Mirror Connector End Views

Outside Rearview Mirror - Passenger

On passenger door

Mirror Component Views

Mirror Connector End Views

Overspeed Buzzer Relay (LHD)

On the side of the I/P fuse block

Displays and Gages Component Views

Displays and Gages Connector End Views

Parking Brake Switch

In the center console, on the park brake lever

Hydraulic Brake Component Views

Hydraulic Brake Connector End Views

Power Mirror Switch

On the driver door armrest

Vehicle Access Component Views

Vehicle Access Connector End Views

Power Steering Oil Pressure Switch

In the right front side of the engine compartment, on the power steering pump

Power Steering Component Views

--

Power Window Motor - Driver

In the driver door

Vehicle Access Component Views

Vehicle Access Connector End Views

Power Window Motor - Left Rear

In the left rear door

Vehicle Access Component Views

Vehicle Access Connector End Views

Power Window Motor - Passenger Front

In the passenger front door

Vehicle Access Component Views

Vehicle Access Connector End Views

Power Window Motor - Right Rear

In the right rear door

Vehicle Access Component Views

Vehicle Access Connector End Views

Power Window Main Switch

On the driver door armrest

Vehicle Access Component Views

Vehicle Access Connector End Views

Pretensioner - Driver

Inside the B-pillar on the driver seat belt retractor

SIR Component Views

SIR Connector End Views

Pretensioner - Passenger

Inside the B-pillar on the passenger seat belt retractor

SIR Component Views

SIR Connector End Views

Radio

In the center of the instrument panel

Entertainment/Communication Component Views

Entertainment/Communication Connector End Views

Rear Fog Lamp Relay (T98)

On the side of the I/P fuse block

Lighting Systems Component Views

Lighting Systems Connector End Views

Rear Wiper Motor

In the center of the liftgate

Wiper/Washer Component Views

Wiper/Washer Connector End Views

Remote Control Door Lock Receiver (RCDLR)/Theft Deterrent Control Module

Behind the driver knee bolster, near the center of the instrument panel

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Rough Road Wheel Speed Sensor (1.0L w/o ABS)

Right front wheel hub near the strut tower

--

Engine Controls Connector End Views

Seat Belt Switch

In the driver seat belt buckle

Seat Belt Component Views

Seat Belt Connector End Views

Sensing and Diagnostic Module (SDM)

Under the rear of the center console

SIR Component Views

SIR Connector End Views

Siren

Engine compartment

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Speaker - Left Front

In the left front door

Entertainment/Communication Component Views

Entertainment/Communication Connector End Views

Speaker - Left Rear

Left side of the rear compartment

Entertainment/Communication Component Views

Entertainment/Communication Connector End Views

Speaker - Right Front

In the right front door

Entertainment/Communication Component Views

Entertainment/Communication Connector End Views

Speaker - Right Rear

Right side of the rear compartment

Entertainment/Communication Component Views

Entertainment/Communication Connector End Views

Starter

On the rear of the engine, on the starter motor

Engine Electrical Component Views

--

Stop Lamp Switch

Under the driver side of the instrument panel, on the brake pedal

Lighting Systems Component Views

Lighting Systems Connector End Views

Throttle Position (TP) Sensor (0.8L)

On the rear of the engine, on the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Turn/Position Lamp - Left Front (TR3)

On the left front side fascia panel, above the wheel house

Lighting Systems Component Views

Lighting Systems Connector End Views

Turn/Position Lamp - Right Front (TR3)

On the right front side fascia panel, above the wheel house

Lighting Systems Component Views

Lighting Systems Connector End Views

Turn Signal Multifunction Switch

In the steering column upper left side

Lighting Systems Component Views

Lighting Systems Connector End Views

Vehicle Speed Sensor (VSS)

In the left side of the engine compartment, on the top rear of the transmission case

Manual Transmission Component Views for the Y4M

or

Manual Transmission Component Views for the Y4A

Manual Transmission Connector End Views for the Y4M

or

Manual Transmission Connector End Views for the Y4A

Washer Pump - Front

In front of the right front wheel, on the windshield washer fluid reservoir

Wiper/Washer Component Views

Wiper/Washer Connector End Views

Washer Pump - Rear

In front of the right front wheel, on the windshield washer fluid reservoir

Wiper/Washer Component Views

Wiper/Washer Connector End Views

Wheel Speed Sensor (WSS) - Left Front

On the left front wheel hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Wheel Speed Sensor (WSS) - Left Rear

On the left rear wheel hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Wheel Speed Sensor (WSS) - Right Front

On the right front wheel hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Wheel Speed Sensor (WSS) - Right Rear

On the right rear wheel hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Windshield Wiper/Washer Switch

On the right side of the steering column

Wiper/Washer Component Views

Wiper/Washer Connector End Views

Wiper Motor - Front

In the left rear of the engine compartment, on the cowl behind the battery

Wiper/Washer Component Views

Wiper/Washer Connector End Views

C101 (12 cavities)

Engine harness to the front harness, in the left front side of the engine compartment, behind the battery

Harness Routing Views

Inline Harness Connector End Views

C103 (6 cavities) (1.0L)

Engine harness to the battery harness, behind the engine block, near the starter motor

Harness Routing Views

Inline Harness Connector End Views

C105 (8 cavities) (1.0L)

Engine harness to fuel injector harness, top of engine

Harness Routing Views

Inline Harness Connector End Views

C201 (16 cavities)

I/P harness to the body harness, above the left side kickpanel

Harness Routing Views

Inline Harness Connector End Views

C202 (15 cavities)

Front harness to the body harness, above the left side kickpanel

Harness Routing Views

Inline Harness Connector End Views

C203 (15 cavities)

I/P harness to the body harness, above the left side kickpanel

Harness Routing Views

Inline Harness Connector End Views

C205 (16 cavities)

Front harness to I/P harness, above the left side kickpanel

Harness Routing Views

Inline Harness Connector End Views

C208 (4 cavities)

I/P harness to the SIR harness, in the center of the instrument panel, behind the HVAC control

Harness Routing Views

Inline Harness Connector End Views

C351 (10 cavities)

Body harness to the left front door harness, in the left A-pillar behind the I/P fuse center

Harness Routing Views

Inline Harness Connector End Views

C352 (11 cavities) (LHD)

Body harness to the left front door harness, in the left A-pillar behind the I/P fuse center

Harness Routing Views

Inline Harness Connector End Views

C353 (4 cavities)

I/P harness to the left front door harness, under left A-pillar

Harness Routing Views

Inline Harness Connector End Views

C361 (10 cavities)

Body harness to the right front door harness, in the right A-pillar

Harness Routing Views

Inline Harness Connector End Views

C363 (4 cavities)

I/P harness to the right front door harness, under the right A-pillar

Harness Routing Views

Inline Harness Connector End Views

C371 w/power windows (6 cavities)

Body harness to the left rear door harness, in the left B-pillar

Harness Routing Views

Inline Harness Connector End Views

C371 w/o power windows (2 cavities)

Body harness to the left rear door harness, in the left B-pillar

Harness Routing Views

Inline Harness Connector End Views

C381 w/power windows (6 cavities)

Body harness to the right rear door harness, in the right B-pillar

Harness Routing Views

Inline Harness Connector End Views

C381 w/o power windows (2 cavities)

Body harness to the left rear door harness, in the left B-pillar

Harness Routing Views

Inline Harness Connector End Views

C401 (3 cavities)

Liftgate harness to the body harness, in the left rear pillar, behind the tail lamp

Harness Routing Views

Inline Harness Connector End Views

G101

In the left front side of the engine compartment, below the left headlamp

Harness Routing Views

--

G102

In the right front side of the engine compartment, below the right headlamp

Harness Routing Views

--

G103

On the rear of the engine block, between the generator and the starter

Harness Routing Views

--

G104 (Auto Trans)

Mounted to the transaxle case below the vacuum brake booster

Harness Routing Views

--

G105 (1.0L Auto Trans)

In the left rear of the engine compartment, next to the underhood fuse block

Harness Routing Views

--

G106 (1.0L Auto Trans)

On the rear of the engine block, on one of the starter bolts

Harness Routing Views

--

G201

Below the left side of the instrument panel, on the I/P fuse block mounting bracket

Harness Routing Views

--

G202

Below the center console, next to the SDM

Harness Routing Views

--

G203

Below the center console, in front of the SDM

Harness Routing Views

--

G401

Behind the rear compartment left side trim panel, below the left tail lamp

Harness Routing Views

--

G402

Behind the rear compartment right side trim panel, below the right tail lamp

Harness Routing Views

--

G404

In the liftgate, next to the defogger grid ground side connector

Harness Routing Views

--