GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Control Module

Behind RH instrument panel, above evaporator case behind the IP compartment

HVAC Component Views

HVAC Connector End Views

A/C Compressor Clutch

RH engine compartment front of A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Switch

Center instrument panel above radio

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HVAC Connector End Views

Auxiliary Radiator Fan Motor

RH rear of radiator

HVAC Component Views

HVAC Connector End Views

Blower Motor

Lower RH Cowl, behind IP compartment

HVAC Component Views

HVAC Connector End Views

Blower Motor Resistor

Lower RH Cowl, behind IP compartment

HVAC Component Views

HVAC Connector End Views

Blower Speed Selector Switch

Center instrument panel above radio

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HVAC Connector End Views

Fan Control Switch

RH front of engine compartment, below intake port # 1 on thermostat housing

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Fuse And Relay Block 1

LH front engine compartment, left of air cleaner (ACL)

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fuse And Relay Block 2

LH front engine compartment, left of battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fuse And Relay Block 3

RH front engine compartment

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Junction Block 2

LH instrument panel, behind storage box access cover

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Junction Block 3

Behind center instrument panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Multifunction Alarm Module

Behind LH instrument panel, mounted to junction block 2

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Audible Warnings Connector End Views in Instrument Panel and Console

Parking Brake Switch

In center console, mounted to parking brake lever

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Power Steering Pressure (PSP) Switch

RH rear of engine compartment, top of power steering pump

Engine Controls Component Views in Engine Controls

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Powertrain Control Module (PCM)

Front of center console, below radio

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Refrigerant Pressure Switch

RH side of engine compartment near radiator

HVAC Component Views

HVAC Connector End Views

C101 (4 cavities)

Engine accessory harness to A/C compressor; RH front of engine compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201 (14 cavities)

Engine main to cowl harness; behind LH body hinge pillar trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (11 cavities)

Engine main to instrument panel harness; behind LH body hinge pillar trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C210 (16 cavities)

Instrument panel harness to cowl harness; attached to RH center instrument panel support bracket

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C211 (14 cavities)

Instrument panel harness to cowl harness; attached to RH center instrument panel support bracket

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C212 (19 cavities)

Cowl harness to engine accessory harness; attached to RH center instrument panel support bracket

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

LH front of engine compartment, behind battery

Power and Grounding Component Views in Wiring Systems

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G104

RH front of engine compartment, behind washer solvent container

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G203

Behind RH body hinge pillar trim panel

Power and Grounding Component Views in Wiring Systems

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G204

Behind center instrument panel, on LH instrument panel support bracket

Power and Grounding Component Views in Wiring Systems

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P100

Rear of engine compartment, in LH inner fender

Power and Grounding Component Views in Wiring Systems

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S200

Cowl harness, near blower motor resistor - A/C compressor control module branch breakout

Harness Routing Views in Wiring Systems

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SP250

Cowl harness; attached to G203, behind RH body hinge pillar trim panel

Harness Routing Views in Wiring Systems

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SP254

Engine main harness; taped to harness between C200 and C203 breakouts

Harness Routing Views in Wiring Systems

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SP256

Instrument panel harness; center of instrument panel, attached to G204 at LH center support bracket

Harness Routing Views in Wiring Systems

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