GM Service Manual Online
For 1990-2009 cars only

Engine Controls Component Location Table

Component

Location

Locator View

Connector End View

7X Crankshaft Position (CKP) Sensor (LA1)

On the lower rear of the engine

--

Engine Controls Connector End Views

24X Crankshaft Position (CKP) Sensor

On the lower rear of the engine

--

Engine Controls Connector End Views

AC Compressor Clutch

On the lower front of the engine

--

Engine Controls Connector End Views

AC Refrigerant Pressure Sensor

In the front of the engine compartment

--

Engine Controls Connector End Views

Camshaft Position (CMP) Sensor

On the top rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Cruise Control Brake Switch

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

Cruise Control Component Views Cruise Control Component Views

Cruise Control Connector End Views Cruise Control Connector End Views

Cruise Control Module

In the right side of the engine compartment

--

Cruise Control Connector End Views Cruise Control Connector End Views

Cruise Control Switch

On the steering column

Cruise Control Component Views Cruise Control Component Views

Cruise Control Connector End Views Cruise Control Connector End Views

Data Link Connector

On the left side of the IP

Engine Controls Component Views

Engine Controls Connector End Views

Engine Coolant Level Switch

In the right side of the engine compartment

--

Engine Controls Connector End Views

Engine Coolant Temperature (ECT) Sensor

On the top left of the engine

--

Engine Controls Connector End Views

Engine Oil Level Switch (LA1)

On the rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Engine Oil Pressure Sensor

On the top left of the engine

--

Engine Controls Connector End Views

Evaporative Emission Canister

On the top rear of the engine

--

Engine Controls Connector End Views

Evaporative Emission Canister Purge Valve

On the lower front of the engine

--

Engine Controls Connector End Views

Evaporative Emission Canister Vent Solenoid

Under the rear of the vehicle

--

Engine Controls Connector End Views

Exhaust Gas Recirculation (EGR) Valve

On the top rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Injectors

On the top rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Fuel Pump Relay

In the underhood junction block

Power and Grounding Component Views

--

Fuel Tank Module

Under the rear of the vehicle

--

Engine Controls Connector End Views

Fuel Tank Pressure Sensor

Under the rear of the vehicle

--

Engine Controls Connector End Views

Generator

On the top right of engine

--

Starting And Charging Connector End Views Engine Electrical Connector End Views

Idle Air Control (IAC) Valve

On the top left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Coils

On the rear of engine

Engine Controls Component Views

Engine Controls Connector End Views

Ignition Control Module

On the top rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Instrument Cluster

On the left side of the IP

IP Component Views Instrument Panel, Gages, and Console Component Views

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

Intake Air Temperature (IAT) Sensor

On the top left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Knock Sensor

On the front of the engine

--

Engine Controls Connector End Views

LH IP Junction Block

On the left side of the IP

Wiring Systems Component Views Power and Grounding Component Views

--

Manifold Absolute Pressure (MAP) Sensor

On the top rear of the engine

--

Engine Controls Connector End Views

Mass Air Flow (MAF) Sensor

On the top left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Post Converter Heated Oxygen Sensor (HO2S  2)

In the right side of the IP

Engine Controls Component Views

Engine Controls Connector End Views

Powertrain Control Module

Below the left side of the IP near the steering column

Engine Controls Component Views

Powertrain Control Module Connector End Views

Pre Converter Heated Oxygen Sensor (HO2S 1)

On the rear of the engine

Engine Controls Component Views

Engine Controls Connector End Views

RH Cooling Fan Motor

In the front of the engine compartment

--

Engine Controls Connector End Views

RH IP Junction Block

In the right side of the passenger compartment

Wiring Systems Component Views Power and Grounding Component Views

--

Starter Motor

On the lower front of the engine

Starting And Charging Component Views Engine Harness Routing Views

--

Starter Solenoid

On the lower front of the engine

Starting And Charging Component Views Engine Harness Routing Views

--

Throttle Position (TP) Sensor

On the top left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Park/Neutral Position Switch

On the left side of the engine

Engine Controls Component Views

Engine Controls Connector End Views

Underhood Junction Block

In the left side of the engine compartment

Wiring Systems Component Views Power and Grounding Component Views

--

Vehicle Speed Sensor (VSS)

At the rear of the engine/transaxle

Engine Controls Component Views

Engine Controls Connector End Views

C101 (10 cavity)

On the left side of the engine compartment

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

C102 (20 cavity)

On the left side of the engine

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

C120 (2 cavity)

On the top rear of the engine

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

C130 (10 cavity)

On the top rear of the engine

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

C200 (18 cavity)

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

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

C300 (10 cavity)

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

Harness Routing Views in Wiring Systems

Inline Connector End Views Inline Harness Connector End Views

G102

On the front of the engine

Harness Routing Views in Wiring Systems

--

G103

On the left side of the engine

Harness Routing Views in Wiring Systems

--

G104

On the left side of the engine compartment

Harness Routing Views in Wiring Systems

--

G201

On the left side of the IP

Harness Routing Views in Wiring Systems

--

G203

On the right side of the IP

Harness Routing Views in Wiring Systems

--

G301

On the left side of the passenger compartment

Harness Routing Views in Wiring Systems

--

P100

In the rear of the engine compartment

Harness Routing Views in Wiring Systems

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