GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch Coil

Part of the A/C compressor

--

HVAC Connector End Views in HVAC Systems with A/C - Manual

A/C Compressor Clutch Diode

Engine compartment, in underhood accessory wiring junction block

--

--

A/C Refrigerant Pressure Sensor

Left side of the engine compartment, below the accumulator, below the air cleaner assembly

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Automatic Transaxle

Lower left side of the engine compartment

--

--

Bank 1 Knock Sensor (KS)

Front of the engine, above the starter

--

--

Body Control Module (BCM)

Below the right side of the IP, right of the IP compartment

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Camshaft Position (CMP) Sensor

Engine compartment, right side of the engine, above the A/C compressor clutch

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Crankshaft Position (CKP) Sensor (7X)

Lower rear of the engine

--

Engine Controls Connector End Views in Engine Controls

Crankshaft Position (CKP) Sensor (24X)

Right side of the engine, at the end of the crankshaft, behind the harmonic balancer

Automatic Transmission Electronic Component Views in Automatic Transmission

Engine Controls Connector End Views in Engine Controls

Cruise Control Module

Engine compartment, near the left strut tower

Antilock Brake System Component Views in ABS/Traction Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

Below the steering column, bottom of the knee bolster

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Connector

Driver Information Display

In the roof console

--

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

Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM)

Left side of the IP, above the parking cable bracket

Antilock Brake System Component Views in ABS/Traction Control

Antilock Brake System Connector End Views in ABS/Traction Control

Engine Coolant Fan Motor 1 (Right)

Mounted to the rear right side of the radiator

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Fan Motor 2 (Left)

Mounted to the rear left side of the radiator

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Temperature (ECT) Sensor

Left side top of the engine

Engine Controls Component Views in Engine Controls

--

Engine Oil Level Indicator Switch

Center of the engine oil pan

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Oil Pressure Indicator Switch

Front of the engine, above the starter

Automatic Transmission Electronic Component Views in Automatic Transmission

--

Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

Top rear of the engine, below the ignition control module

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Evaporative Emissions (EVAP) Canister Vent Solenoid Valve

Below the center of the vehicle, forward of the fuel tank

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Exhaust Gas Recirculation (EGR) Valve

Upper left side of the engine

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fuel Injectors

Top of the engine at each cylinder intake port

--

--

Fuel Level Sender

Mounted inside the fuel tank

--

--

Fuel Pump Motor

Mounted inside the fuel tank

--

--

Fuel Pump Prime Connector

One cavity connector, branching out of the engine wiring harness, near the battery

--

--

Fuel Pump Relay

Engine compartment, in the underhood accessory wiring junction block

--

--

Fuel Tank

Below the left side, middle of the vehicle

 

--

Fuse Block

Right side of the IP, in the right front door opening

Power and Grounding Component Views in Wiring Systems

--

Generator (K68)

Top rear right side of the engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views in Engine Electrical

Generator (KG9)

Top rear right side of the engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor 1 (HO2S 1)

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 (HO2S 2)

In the exhaust system, behind the catalytic converter

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Heater-A/C Control

Center of the IP, below the radio

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Idle Air Control (IAC) Valve

Top of the engine, front of the throttle assembly

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Ignition Control Module (ICM)

Top center rear of the engine

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Instrument Cluster

Left side of the IP

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

Left of engine compartment, on the air intake duct, near the throttle body

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Manifold Absolute Pressure (MAP) Sensor

Right top of the engine

--

--

Mass Air Flow (MAF) Sensor

Left front of the engine compartment, in the air cleaner duct

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Powertrain Control Module (PCM)

Engine compartment, secured in the air cleaner assembly

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Radio

Center of the IP console

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Rear Side Door Actuator Motor

Right quarter panel, above the wheelhouse

--

--

Stop Lamp Switch

Mounted to the brake pedal support

Antilock Brake System Component Views in ABS/Traction Control

Cruise Control Connector End Views in Cruise Control

Throttle Position (TP) Sensor

Top of the engine, on the throttle assembly

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Transaxle Range Switch

Rear left side of the engine compartment, mounted to the top of the transaxle

Automatic Transmission Electronic Component Views in Automatic Transmission

Engine Controls Connector End Views in Engine Controls

Underhood Accessory Wiring Junction Block

Engine compartment, front of the right wheelhouse, above the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (VSS)

Lower right tear of the engine compartment, mounted to the right side of the transaxle

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Windshield Wiper/Washer Switch

Part of the turn signal switch, on the steering column

--

Wiper/Washer Connector End Views in Wipers/ Washer System

C101 (10 cavities)

IP wiring harness to the engine wiring harness, in the lower left side of the engine compartment, next to C103 and C181

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102 (10 cavities)

Engine wiring harness to the fuel injector wiring harness, top of the engine, near the generator next to C108

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C108 (3 cavities)

Engine wiring harness to the fuel injector wiring harness, top of the engine, near the generator next to C102

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C111 (7 cavities)

Engine wiring harness to the automatic transaxle wiring harness, lower left side of the engine compartment, front of the automatic transaxle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C181 (6 cavities)

IP wiring harness to the engine wiring harness, in the lower left side of the engine compartment, next to C101 and C103

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (56 cavities)

IP wiring harness to the right side of the body wiring harness, behind the right side of the IP compartment, below P100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (56 cavities)

IP wiring harness to the left side of the body wiring harness, left side of the steering column, below P101

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (12 cavities)

Body wiring harness to the electronic brake control wiring harness and fuel sender wiring harness, mounted as a pass through, beneath the vehicle behind the driver seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C308 (23 cavities)

Body wiring harness to the dome lamp wiring harness, inside the right B-pillar, behind the lower trim

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C400 (2 cavities)

Body wiring harness to the liftgate wiring harness, above the right rear side of the roof headliner, near P406 and the liftgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (10 cavities)

Body wiring harness to the auto level control wiring harness, behind the left quarter panel, behind the left rear wheelhouse

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G111

Engine compartment, left of the starter, along with the battery ground

Harness Routing Views in Wiring Systems

--

G113

Engine compartment, left of the starter, along with the battery ground

Harness Routing Views in Wiring Systems

--

G117

Engine compartment, left and above the starter, near the connector C111 to the automatic transaxle

Harness Routing Views in Wiring Systems

--

G200

Right side of the IP, secured on the underside of the cross car beam, left of the heater-A/C vent

Harness Routing Views in Wiring Systems

--

G301

Secured to the inside of the lower left B-pillar

Harness Routing Views in Wiring Systems

--

G302

Secured near the base of the right B-pillar

Harness Routing Views in Wiring Systems

--

G402

Secured to the lower right D-pillar

--

--

P100

On the right side of the bulkhead, left of the right strut tower

Harness Routing Views in Wiring Systems

--

P101

On the left side of the bulkhead, right of the left strut tower

Harness Routing Views in Wiring Systems

--

S105

Engine harness, top right side radiator approximately 20 cm (8 in) from the engine coolant fan 1 (right) motor breakout

--

--

S106

Engine harness, front left side of the engine compartment approximately 10 cm (4 in) from the PCM breakout

--

--

S107

Engine harness, center of the engine approximately 4 cm (2 in) from the camshaft position sensor breakout

--

--

S109

Fuel injector harness, center of the engine approximately 16 cm (6 in) from C102

--

--

S115

Automatic transaxle harness, inside automatic transaxle housing approximately 42 cm (17 in) from the automatic transaxle fluid temperature sensor

--

--

S121

Engine jumper harness, below intake plenum approximately 2 cm (1 in) from PCM breakout

--

--

S122

Engine harness, top left side of the radiator approximately 25 cm (10 in) from the engine coolant fan 1 (right) motor breakout

--

--

S146

Engine harness, center of the engine approximately 10 cm (4 in) from the engine coolant fan 1 (right) motor breakout

--

--

S155

Engine harness, front of the engine approximately 14 cm (6 in) from the knock sensor breakout

--

--

S167

Engine harness, front left side of the engine approximately 5 cm (2 in) PCM breakout

--

--

S202

IP harness, left side of the IP approximately 18 cm (7 in) from the radio and rear window wiper/washer and multi-function switch breakout

--

--

S206

IP wiring harness below IP compartment approximately 11 cm (4 in) from blower motor relay breakout

--

--

S209

IP harness, center of the IP approximately 8 cm (3 in) from the security indicator lamp breakout

--

--

S211

IP harness, left side of the IP approximately 18 cm (7 in) from the radio and the rear window wiper/washer and multi-function switch breakout

--

--

S237

IP harness, right side of the IP approximately 4 cm (2 in) from the C203 breakout

--

--

S264

IP harness, right side of the IP approximately 16 cm (6 in) from the relay center breakout

--

--

S425

Fuel tank wiring harness below rear of vehicle approximately 43 cm (17 in) from C405

--

--