GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch

On the upper left front of the engine, on the front of the A/C compressor behind the A/C compressor pulley

HVAC Component Views

HVAC Connector End Views

A/C Compressor Relay

In the engine wiring harness junction block (underhood fuse relay center), center relay in the column at the left side

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

A/C Compressor High Pressure Cutoff Switch

On the rear plate of the A/C compressor housing

HVAC Component Views

HVAC Connector End Views

A/C Compressor Refrigerant Pressure Switch

Body builder installed

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HVAC Connector End Views

Engine Wiring Harness Junction Block (Underhood Fuse Relay Center)

At the lower LH corner of the cowl

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (PCM)

Above the radiator to the right of the driver island

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

D101

10 cm (4 in) from the A/C compressor clutch breakout toward the generator bracket

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G104

Rear of the RH cylinder bank

Power and Grounding Component Views in Wiring Systems

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S101

In the engine harness, 20 cm (8 in) from the generator breakout toward the fuel injector breakout

Harness Routing Views in Wiring Systems

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S102

In the engine harness, 27 cm (11 in) from the fuel injector breakout toward the generator breakout

Harness Routing Views in Wiring Systems

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S107

In the engine harness, 20 cm (8 in) from the breakout for the PCM toward the generator breakout

Harness Routing Views in Wiring Systems

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S108 (A/C Diode Splice)

In the engine harness, 10 cm (4 in) from the breakout for the A/C compressor toward the generator breakout

Harness Routing Views in Wiring Systems

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S109 (A/C Diode Splice)

In the engine harness, 10 cm (4 in) from the breakout for the A/C compressor toward the generator breakout

Harness Routing Views in Wiring Systems

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