GM Service Manual Online
For 1990-2009 cars only

Name

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Location

Locator View

Connector End View

A/C Compressor Relay

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

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A/C Compressor Control Module

Behind the center of the instrument panel on the heater case

HVAC Component Views in HVAC - Manual

HVAC Connector End Views in HVAC - Manual

A/C Condenser Fan

Between the grille and the radiator

HVAC Component Views in HVAC - Manual

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A/C Condenser Fan Relay

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

HVAC Component Views in HVAC - Manual

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A/C Refrigerant Pressure Switch

Right front of the engine compartment between the radiator and the grill near the condensor fan

HVAC Component Views in HVAC - Manual

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A/C Switch

Center of the instrument panel on the heater control unit

HVAC Component Views in HVAC - Manual

HVAC Connector End Views in HVAC - Manual

Accelerometer (with ABS)

Under the rear floor console

Antilock Brake System Component Views in ABS

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Air Bag Fuse

In the SIR harness, attached to the carrier

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Ambient Light Sensor

Top right side of the instrument panel

Lighting Systems Component Views in Lighting Systems

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Auxiliary Power Outlet

Center floor console left of the parking brake

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Backup Lamp Switch (Manual Transmission)

Mounted on the top of the transmission

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Battery

Right rear of the engine compartment behind the strut tower

Engine Electrical Component Views in Engine Electrical

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Blower Fuse

Left side of the instrument panel above the junction block

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Blower Motor Relay

Behind the instrument panel compartment door

HVAC Component Views in HVAC Manual

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Blower Switch

Center of the instrument panel on the heater control unit

HVAC Component Views in HVAC Manual

HVAC Connector End Views in HVAC Manual

Brake Fluid Level Switch

Left rear of the engine compartment in the brake reservoir

Hydraulic Brake Component Views in Hydraulic Brakes

Hydraulic Brake Connector End Views in Hydraulic Brakes

Cigar Lighter

Center of the instrument panel below the radio

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

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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Cruise Control Release Switch (Manual Transmission)

Under the Left side of the instrument panel near the steering wheel column

Cruise Control Component Views in Cruise Controls

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Cruise Control Main Switch

Left side of the instrument panel to the left of the steering wheel column

Cruise Control Component Views in Cruise Controls

Cruise Control Connector End Views in Cruise Controls

Cruise Control Servo

Left side of the engine compartment near the strut tower

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

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

Daytime Running Lamps (DRL) Control Module

Behind the top of the instrument panel to the right of the steering wheel column

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Daytime Running Lamps (DRL) Diode

Right side of the instrument panel taped to the main harness behind the ECM

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Door Lock Relay

Above the accelerator pedal, attached to the RCDLR

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Door Lock Switch

Left front door trim panel

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Power Door Systems Connector End Views in Doors

Door Unlock Relay

Above the accelerator pedal, attached to the RCDLR

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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

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

Front Washer Pump

Left front of the engine compartment on the washer fluid reservior

Wiper/Washer Component Views in Wipers/Washer

Wiper/Washer Connector End Views in Wipers/Washer

Front Wiper Motor

Left rear of the engine compartment on the bulk head

Wiper/Washer Component Views in Wipers/Washer

Wiper/Washer Connector End Views in Wipers/Washer

Front Wiper/ Washer Switch

Right side of the steering wheel column

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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 in Engine Controls

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

Generator

Lower right front of the engine

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Hazard Switch

Top center of the Instrument panel

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Heated Oxygen Sensor 1 (HO2S1)(2.0L)

Left rear of the engine in the exhaust manifold

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 1 (HO2S1)(1.6L)

Left rear of the engine in the exhaust manifold

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 2 (HO2S2)(US)(2.0L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 2 (HO2S2)(US)(1.6L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 2 (HO2S2)(CAL)(2.0L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heated Oxygen Sensor 2 (HO2S2)(CAL)(1.6L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Horn

Between the grille and the radiator on the right side

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Horn Connector End Views in Horns

Horn Relay

Attached to the fuse block bracket

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Horn Connector End Views in Horns

Ignition Coil 1(2.0)

Top of the engine over spark plug 1

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 2(2.0)

Top of the engine over spark plug 2

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 3(2.0)

Top of the engine over spark plug 3

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 4(2.0)

Top of the engine over spark plug 4

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 1(1.6)

Top of the engine over spark plug 1

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Coil 2(1.6)

Top of the engine over spark plug 3

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Switch

On the top of the steering wheel column

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Inflatable Restraint Sensing and Diagnostic Module (SDM)

Below the center of the instrument panel near the front of the floor console

SIR Component Views in SIR

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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

I.P. Lamp Dimmer Control

Left side of the instrument panel to the left of the steering wheel

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Junction Block

Above the lower left door hinge trim panel

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Power and Grounding Connector End Views

Left Front Lock Cylinder(4-Door)

Inside the rear of the left front door

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Left Rear Window Switch(4-Door)

In the center of the left rear door trim panel

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License Plate Lamp

Back door above the license plate

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Main Relay

Left side of the instrument panel attached to the junction block on the left side

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Map Lamps

Front center of the roof in the rear view mirror

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Lighting Systems Connector End Views in Lighting Systems

Master Window Switch

In the center of the left front door trim panel

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Noise Suppressor Filter

Center of the engine compartment taped to the main harness and wiper access panel

Entertainment Component Views in Entertainment

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Powertrain Control Module (PCM)(2.0L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Powertrain Control Module (PCM)(1.6L)

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

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Rear Defogger (4-Door)

On the back door window

Stationary Windows Component Views in Stationary Windows

Stationary Windows Connector End Views in Stationary Windows

Rear Defogger Relay

Left side of the instrument panel above the junction block,mounted to the IP carrier

Stationary Windows Component Views in Stationary Windows

Stationary Windows Connector End Views in Stationary Windows

Rear Defogger Switch (4-Door)

Center of the instrument panel to the right of the steering wheel column

Stationary Windows Component Views in Stationary Windows

Stationary Windows Connector End Views in Stationary Windows

Rear Washer Pump (4-Door)

Left front of the engine compartment on the washer fluid reservoir

Wiper/Washer Component Views in Wipers/Washer

Wiper/Washer Connector End Views in Wipers/Washer

Rear Wiper Motor (4-Door)

In the center of the rear door

Wiper/Washer Component Views in Wipers/Washer

Wiper/Washer Connector End Views in Wipers/Washer

Rear Wiper/ Washer Switch (4-Door)

Left side of the instrument panel to the left of the steering wheel

Wiper/Washer Component Views in Wipers/Washer

Wiper/Washer Connector End Views in Wipers/Washer

Remote Control Door Lock Receiver(4-Door)

In the left side of the instrument panel above the accelerator pedal

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Remote Control Mirror Switch(4-Door)

Left side of the instrument panel to the left of the steering wheel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Right front Window Switch (4-Door)

In the center of the right front door trim panel

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Power Door Systems Connector End Views in Doors

Right Rear Window Switch (4-Door)

In the center of the right rear door trim panel

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Seat Belt Switch

In the left seat belt buckle

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

Shift Lock Diode(Automatic Transmission)

Center floor console under the selector lever assembly

Automatic Transmission Electronic Component Views in Automatic Transmission - 4 Speed - M41

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

Shift Lock Relay (Automatic Transmission)

Right side of the engine compartment attached to the fuse block bracket

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

Shift Lock Solenoid (Automatic Transmission)

Center floor console attached to the selector lever assembly

Automatic Transmission Electronic Component Views in Automatic Transmission - 4 Speed - M41

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

Shift Program Switch(Automatic Transmission)

Left side of the center floor console

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

Starter Motor

Lower right side of the engine under the intake manifold

Engine Electrical Component Views in Engine Electrical

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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

Supplemental Inflatable Restraint (SIR) Data Link Connector (DLC)

Left side of the instrument panel under the steering wheel column

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Transmission Range Switch (Automatic Transmission)

Left side of the transmission in the adapter case

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

Vehicle Speed Sensor (VSS)

Right side of the transmission

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,beow the fuse block

Harness Routing Views

Inline Harness Connector End Views

C103

A/C harness to the main harness on the right front fender panel,below the fuse block

Harness Routing Views

Inline Harness Connector End Views

C200

Main harness to the Keyless Entry harness

Harness Routing Views

Inline Harness Connector End Views

C201

Main harness to the instrument panel harness near the left door hinge panel, right side of the junction block

Harness Routing Views

Inline Harness Connector End Views

C202

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

Harness Routing Views

Inline Harness Connector End Views

C203

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

Harness Routing Views

Inline Harness Connector End Views

C204

Main harness to the instrument panel harness attached below the junction block

Harness Routing Views

Inline Harness Connector End Views

C206

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

Harness Routing Views

Inline Harness Connector End Views

C207

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

Harness Routing Views

Inline Harness Connector End Views

C208

Main harness to the left front door harness above the junction block,in the front pillar

Harness Routing Views

Inline Harness Connector End Views

C209

Main harness to the right front door harness in the right front piller

Harness Routing Views

Inline Harness Connector End Views

C210

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

Harness Routing Views

Inline Harness Connector End Views

C211

Main harness to the right front door harness in the right front piller

Harness Routing Views

Inline Harness Connector End Views

C212

Engine harness to the main harness near the right side door hinge panel,in the front pillar

Harness Routing Views

Inline Harness Connector End Views

C214

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

Harness Routing Views

Inline Harness Connector End Views

C215

I.P. harness to the SIR harness rear center of the instrument panel

Harness Routing Views

Inline Harness Connector End Views

C216

Main harness to the wiper washer switch in the steering column

Harness Routing Views

Inline Harness Connector End Views

C217

SIR harness, white single wire connector,at the base of the steering column

Harness Routing Views

Inline Harness Connector End Views

C302

Floor harness to the left rear door harness in the left side center pillar

Harness Routing Views

Inline Harness Connector End Views

C304

Floor harness to the right rear door harness in the right side center pillar

Harness Routing Views

Inline Harness Connector End Views

C305(4-Door)

Floor harness to the left rear door harness in the center pillar

Harness Routing Views

Inline Harness Connector End Views

C306(4-Door)

Floor harness to the right rear door harness in the center pillar

Harness Routing Views

Inline Harness Connector End Views

C307(2-Door)

Main harness to the floor harness near the left rear quarter pillar

Harness Routing Views

Inline Harness Connector End Views

C400

Floor harness to the back door harness under the right rear trim panel

Harness Routing Views

Inline Harness Connector End Views

C401

Floor harness to the fuel jumper harness inside the frame rail

Harness Routing Views

Inline Harness Connector End Views

C402

Floor harness to the trailer harness left rear of the fuel tank

Harness Routing Views

Inline Harness Connector End Views

C403

Back door harness to the center high mount stop lamp harness(CHMSL) in the back door

Harness Routing Views

Inline Harness Connector End Views

G100

Right rear side of the engine compartment near the battery

Harness Routing Views

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G101

Right side of the engine compartment lower rear side of the engine

Harness Routing Views

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G102

Left rear of the cylinder head to the bulkhead

Harness Routing Views

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G103

Right rear of the engine compartment mounted to the intake manifold

Harness Routing Views

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G104

Left front of the core support near the washer reservoir

Harness Routing Views

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G105

Right front of the core support near the horn

Harness Routing Views

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G200

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

Harness Routing Views

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G201

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

Harness Routing Views

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G202

Under the center consol,forward of the shifter,mounted to the trans tunnel

Harness Routing Views

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G400 (4-Door)

Inside the rear door near the license plate lamps

Harness Routing Views

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G400 (2-Door)

Inside the rear door near the license plate lamps

Harness Routing Views

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G401 (4-Door)

Rear door harness near the rear wiper motor

Harness Routing Views

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P100

Behind the right side of the instrument panel on the bulkhead

Harness Routing Views

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P200

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

Harness Routing Views

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P201

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

Harness Routing Views

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P400 (2-Door)

Right rear quarter panel

Harness Routing Views

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P400 (4-Door)

Right rear quarter panel

Harness Routing Views

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P401

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

Harness Routing Views

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P500 (4-Door)

Left front door

Harness Routing Views

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P600 (4-Door)

Right front door

Harness Routing Views

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P700 (4-Door)

Left rear door

Harness Routing Views

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P800 (4-Door)

Right rear door

Harness Routing Views

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S100

Engine Harness

Harness Routing Views

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S101

Engine Harness

Harness Routing Views

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S105

Engine Harness

Harness Routing Views

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S107

Engine Harness

Harness Routing Views

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S108

Engine Harness

Harness Routing Views

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S111

Fuel Injector Jumper Harness

Harness Routing Views

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S112

A/C Jumper Harness

Harness Routing Views

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S113

A/C Jumper Harness

Harness Routing Views

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S114

A/C Jumper Harness

Harness Routing Views

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S200 (Manual Transmission With Cruise)

Main Harness

Harness Routing Views

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S201

Main Harness

Harness Routing Views

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S202

Main Harness

Harness Routing Views

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S203

Main Harness

Harness Routing Views

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S205

Main Harness

Harness Routing Views

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S206

Main Harness

Harness Routing Views

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S209

Main Harness

Harness Routing Views

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S210

Main Harness

Harness Routing Views

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S211

Main Harness

Harness Routing Views

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S216(Automatic Transmission With Cruise)

Main Harness

Harness Routing Views

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S218

Main Harness

Harness Routing Views

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S219

Main Harness

Harness Routing Views

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S220

Main Harness

Harness Routing Views

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S221(With Power Door Locks)

Main Harness

Harness Routing Views

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S223(With Power Door Locks)

Main Harness

Harness Routing Views

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S229

Main Harness

Harness Routing Views

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S230(With Power Door Locks)

Main Harness

Harness Routing Views

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S231

Main Harness

Harness Routing Views

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S232

Main Harness

Harness Routing Views

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S235

Main Harness

Harness Routing Views

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S236

Main Harness

Harness Routing Views

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S240

Main Harness

Harness Routing Views

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S241

Main Harness

Harness Routing Views

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S242

Main Harness

Harness Routing Views

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S244(With Power Windows)

Main Harness

Harness Routing Views

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S248

I.P. Harness

Harness Routing Views

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S250

I.P. Harness

Harness Routing Views

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S255

I.P. Harness

Harness Routing Views

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S256

I.P. Harness

Harness Routing Views

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S259

I.P. Harness

Harness Routing Views

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S264

Main Harness

Harness Routing Views

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S265

Main Harness

Harness Routing Views

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S310(4-Door With Power Windows)

Floor Harness

Harness Routing Views

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S313

Dome Jumper Harness

Harness Routing Views

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S400

Rear door harness

Harness Routing Views

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S501

Left Front Door Harness

Harness Routing Views

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SP200

Main Harness

Harness Routing Views

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SP201

Main Harness

Harness Routing Views

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