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, on the lower right front of the engine

Engine Controls Component Views in HVAC System - Manual (C60) or HVAC Component Views in HVAC Systems - Automatic (CJ2)

HVAC Connector End Views in HVAC System - Manual (C60) or HVAC Connector End Views in HVAC System - Automatic (CJ2)

A/C Refrigerant Pressure Sensor

Left side of the engine compartment on the accumulator

Engine Controls Component Views in HVAC System - Manual (C60) or HVAC Component Views in HVAC Systems - Automatic (CJ2)

HVAC Connector End Views in HVAC System - Manual (C60) or HVAC Connector End Views in HVAC System - Automatic (CJ2)

Automatic Transaxle

Lower left side of the engine compartment

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Bank 1 Knock Sensor (KS)

Front of the engine, above the starter

Engine Controls Component Views

Engine Controls Connector End Views

Bank 2 Knock Sensor (KS)

Rear of the engine, below the exhaust manifold

Engine Controls Component Views

Engine Controls Connector End Views

Body Control Module (BCM)

Below the left side of the IP, left of the steering column

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Camshaft Position (CMP) Sensor

Right side of the engine, below the intake plenum

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (CKP) Sensor (24X)

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

Engine Controls Component Views

Engine Controls Connector End Views

Crankshaft Position (CKP) Sensor (7X)

Lower rear of the center of the engine block

Engine Controls Component Views

Engine Controls Connector End Views

Cruise Control Module

Left side of the engine compartment, mounted to the strut tower

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

On the bottom of the IP, right of the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Driver Information Display (DID)

Right side of the instrument cluster

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Engine Coolant Fan Motor

Front of the engine compartment, mounted to the radiator

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Engine Coolant Temperature (ECT) Sensor

Top left side of the engine below the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Level Indicator Switch

Center of the engine oil pan

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Engine Oil Pressure Indicator Switch

Front of the engine above the starter

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

Top rear of the engine, on the intake manifold behind the ignition control module

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emissions (EVAP) Canister Purge Vacuum Diagnostic Switch

Top rear of the engine, on the intake manifold behind the ignition control module

Engine Controls Component Views

Engine Controls Connector End Views

Evaporative Emission (EVAP) Canister Vent Solenoid

Behind the left side of the rear fascia splash shield, behind the wheel well

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Exhaust Gas Recirculation (EGR) Valve

Upper left side of the engine, near the throttle body

Engine Controls Component Views

Engine Controls Connector End Views

Fuel injectors

Top of the engine at each cylinder intake port

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Tank

Below the rear of the vehicle, forward of the rear axle

Engine Controls Component Views

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Fuse Block

Right side of the IP, in the IP compartment opening

Power and Grounding Component Views in Wiring Systems

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Generator

Top rear right side of the engine

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Heated Oxygen Sensor 2 (H02S 2)

In the exhaust system, behind the catalytic converter

Engine Controls Component Views

Engine Controls Connector End Views

Heater-A/C Control (C60)

Center of the IP

Engine Controls Component Views in HVAC System - Manual (C60) or HVAC Component Views in HVAC Systems - Automatic (CJ2)

HVAC Connector End Views in HVAC System - Manual (C60) or HVAC Connector End Views in HVAC System - Automatic (CJ2)

Heater-A/C Control (CJ2)

Center of the IP

Engine Controls Component Views in HVAC System - Manual (C60) or HVAC Component Views in HVAC Systems - Automatic (CJ2)

HVAC Connector End Views in HVAC System - Manual (C60) or HVAC Connector End Views in HVAC System - Automatic (CJ2)

Idle Air Control (IAC) Valve

Top of the engine of the front of the throttle assembly

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control Module (ICM)

Top center rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

Left side of the IP

Instrument Cluster and HUD Component Views I in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Instrument Cluster Head-Up Display (HUD)

Top of the left side of the IP

Instrument Cluster and HUD Component Views I in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Intake Air Temperature (IAT) Sensor

Left front of the engine compartment in the air cleaner duct

Engine Controls Component Views

Engine Controls Connector End Views

Manifold Absolute Pressure (MAP)

Top rear of the engine near the fuel injectors

Engine Controls Component Views

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

Left front of the engine, in the air cleaner duct

Engine Controls Component Views

Engine Controls Connector End Views

Park/Neutral Position (PNP) Switch

Left rear of the engine compartment, on the transaxle

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module (PCM)

Left side of the engine compartment, inside the air cleaner assembly

Engine Controls Component Views

Powertrain Control Module Connector End Views

Secondary Air Injection (AIR) Pump (NC1)

Mounted on the outside of the left front fame rail, in the front of the left front fender well

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Engine Controls Connector End Views

Secondary Air Injection (AIR) Pump Relay (NC1)

Mounted on the outside of the left front frame rail, just behind the bumper support, forward of the AIR pump

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Engine Controls Connector End Views

Secondary Air Injection (AIR) Solenoid (NC1)

Mounted on a bracket on the right rear of the engine

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Engine Controls Connector End Views

Stop Lamp Switch

Below the left side of the IP, in the right side of the brake pedal bracket

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Throttle Position (TP) Sensor

Top of the engine on the throttle assembly

Engine Controls Component Views

Engine Controls Connector End Views

Trip Calculator

Right side of the instrument cluster

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Underhood Accessory Wiring Junction Block

Right side of the engine compartment, mounted to the strut tower

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Speed Sensor (VSS)

Right rear of the engine compartment, in the transaxle

Engine Controls Component Views

Engine Controls Connector End Views

C101 (20 cavities)

IP wiring harness to the engine wiring harness, on the left side of the engine compartment on the front of the strut tower

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, on the top of the engine near generator

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C105 (4 cavities)

Engine wiring harness to the coolant fan wiring harness, on the radiator between the coolant fans

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C108 (5 cavities)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C111 (7 cavities)

Engine to the automatic transaxle harness, on the left side of the engine compartment, on the top of the transmission

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C181 (10 cavities)

IP wiring harness to the engine wiring harness, left side of the engine compartment on the front of the strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (56 cavities)

IP wiring harness to the body wiring harness, behind the right side of the IP, near the shroud

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (8 cavities)

Body wiring harness to the fuel tank wiring harness, in the rear compartment floor forward of the spare tire well

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G111

Lower left front of the engine on the transaxle stud, near the starter

Harness Routing Views in Wiring Systems

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G113

Lower left front of the engine on the transaxle stud, near the starter

Harness Routing Views in Wiring Systems

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G117

Lower left front of the engine on the transaxle stud, above the starter

Harness Routing Views in Wiring Systems

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G200

Right side of the IP cross beam, behind the fuse block

Harness Routing Views in Wiring Systems

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G302

Right door sill, forward of the right front seat

Harness Routing Views in Wiring Systems

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P100

Lower right side of the dash panel

Harness Routing Views in Wiring Systems

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P101

Upper left side of the dash panel

Harness Routing Views in Wiring Systems

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S105

Engine wiring harness, in the front of the engine compartment, approximately 4 cm (2 in) from the inline connector C105 (engine coolant fan jumper connector) breakout

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S106

Engine wiring harness, on the left side of the engine compartment, approximately 44 cm (17 in) from the PCM

Harness Routing Views in Wiring Systems

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S109

Fuel injector wiring harness, on the top of the engine, approximately 2 cm (1 in) from the fuel injector 2 breakout

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S121

Fuel injector wiring harness, on the top of the engine, approximately 2 cm (1 in) from the fuel injector 3 breakout

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S131

Engine wiring harness, on the left side of the engine compartment, approximately 4 cm (2 in) from the EBTCM breakout

Harness Routing Views in Wiring Systems

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S167

Engine wiring harness, inboard of the coolant bottle, on the drivers side of the engine compartment, appoximately 4 cm (2 in) from the PCM breakout

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S206

IP wiring harness, right side of the steering column, approximately 4 cm (2 in) from the data link connector breakout

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S209

IP wiring harness, behind the right side of the instrument cluster, approximately 20 cm (8 in) from the driver information display/trip calculator breakout

Harness Routing Views in Wiring Systems

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S211

IP wiring harness, behind the center of the IP, approximately 11 cm (4 in) from the data link connector

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S237

IP wiring harness, behind the center of IP, approximately 30 cm (12 in) from the data link connector breakout

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S238

IP wiring harness, below the center of the IP, approximately 27 cm (11 in) from inline connector C240

Harness Routing Views in Wiring Systems

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S285

IP wiring harness, on the right side of the steering column, approximately 14 cm (5 in) from the data link connector breakout

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S406

Body wiring harness, below the rear window panel, approximately 10 cm (4 in) from the inline connector C405 (inline connector to fuel tank harness) breakout

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S409

Body wiring harness, below the rear window panel between C405 (inline connector to the fuel tank harness) and the C405 breakout, approximately 10 cm (4 in) from the inline connector C405 breakout

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