GM Service Manual Online
For 1990-2009 cars only

Component

Location

Locator View

Connector End View

Engine Coolant Level Switch

In the right side of the engine compartment

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Temperature (ECT) Sensor

On the top rear of the engine (LD9)

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Temperature (ECT) Sensor

On the top left of the engine (LA1)

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

LH Cooling Fan Motor

In the front of the engine compartment

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Powertrain Control Module (PCM)

Below the left side of the IP near the steering column (LA1)

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Powertrain Control Module (PCM)

Below the left side of the IP near the steering column (LD9)

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

RH Cooling Fan Motor

In the front of the engine compartment

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Underhood Junction Block

In the left side of the engine compartment

Power and Grounding Component Views in Wiring Systems

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C102 (20 cavity)

On the left side of the engine

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C120 (2 cavity)

On the top rear of the engine (LA1)

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C130 (10 cavity)

On the top rear of the engine (LA1)

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

On the left side of the engine

Harness Routing Views in Wiring Systems

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S105

In the engine harness, approximately 15 cm (5.9 in) from P100, towards the PCM

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P100

In the rear of the engine compartment

Harness Routing Views in Wiring Systems

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