GM Service Manual Online
For 1990-2009 cars only

HVAC Components P42

Name

Location

Locator View

Connector End View

A/C Compressor Clutch

At the front left side of the engine

HVAC Component Views

HVAC Connector End Views

A/C Compressor High Pressure Cut-Off Switch

At the rear of the A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Compressor Refrigerant Pressure Switch

Located by the body builder

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HVAC Connector End Views

A/C Compressor Relay

In the engine compartment, on the bulkhead, under the battery junction block

HVAC Component Views

HVAC Connector End Views

Data Link Connector (DLC)

Left side of the passenger compartment lower bulkhead, on the side of the relay bracket

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

IP Fuse Block

Located by the body builder

Electrical Center Identification Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (EFI Diesel)

At the left side of the drivers island, on the relay bracket

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Vehicle Control Module (Gasoline)

At the left side of the radiator support

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C200

Engine harness to the IP harness, in the bulkhead, near P100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D101

In the engine harness, approximately 13 cm (5 in) from the breakout, toward the A/C compressor high pressure cut-off switch

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G102 (Diesel with Manual Trans)

At the right front of the engine, near the generator bracket

Power and Grounding Component Views in Wiring Systems

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G102 (All Gasoline, Diesel with Auto Trans)

At the rear of the left cylinder head

Power and Grounding Component Views in Wiring Systems

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G104

At the rear of the left cylinder head

Power and Grounding Component Views in Wiring Systems

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G200

Left interior bulkhead, near the relay bracket

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P100

Left bulkhead, left of the steering column

Harness Routing Views in Wiring Systems

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R100 (Gasoline)

In the engine harness, approximately 23 cm (9 in) from the breakout to the MAF and IAT sensors

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R203 (Diesel)

In the engine harness, approximately 25 cm (10 in) from the PCM connector C3

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S110 (Gasoline)

In the engine harness, approximately 4 cm (2 in) from the breakout for C200, toward P100

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S110 (Diesel)

In the engine harness, approximately 4 cm (2 in) from the breakout for the ABS harness connectors C110 and C111

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S118 (MFI Diesel)

In the engine harness, approximately 15 cm (6 in) from the glowplug controller breakout, toward the generator

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S118 (EFI Diesel)

In the engine harness, approximately 4 cm (2 in) from the starter motor breakout, toward the rear chassis connector C300

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S118 (Gasoline)

In the engine harness, at the left rear of engine, approximately 4 cm (2 in) from G102/G104 breakout, toward the bank 1 HO2S

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S124

In the engine harness on the end of D101, approximately 13 cm (5 in) from the A/C compressor high pressure cut-off switch breakout

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S132 (Gasoline)

In the engine harness, approximately 19 cm (8 in) from C200 breakout, toward the MAF sensor

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S132 (EFI Diesel)

In the engine harness, approximately 11 cm (4 in) from the breakout for C200, toward the A/C compressor connectors

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S138 (Gasoline)

In the engine harness, approximately 7 cm (3 in) from the TP sensor breakout, toward C105

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S142 (Gasoline)

In the engine harness, approximately 23 cm (9 in) from the breakout to the MAF sensor, on R100

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S144 (Gasoline)

In the engine harness, approximately 11 cm (4 in) from C200 breakout, toward P100

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S144 (Diesel)

In the engine harness, approximately 17 cm (7 in) from the A/C compressor clutch relay

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S205

In the IP harness, approximately 4 cm (2 in) before the fuse block breakout, toward C200

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S207

In the IP harness, approximately 40 cm (16 in) from the fuse block, toward the instrument cluster connector

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S242 (Diesel)

In the engine harness, approximately 25 cm (10 in) from the PCM connector C3 on R203

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HVAC Components P32

Name

Location

Locator View

Connector End View

A/C Compressor Clutch

At the front left side of the engine

HVAC Component Views

HVAC Connector End Views

A/C Compressor High Pressure Cut-Off Switch

At the rear of the A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Compressor Refrigerant Pressure Switch

Located by the body builder

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HVAC Connector End Views

A/C Compressor Relay

On the right side of the driver's island

HVAC Component Views

HVAC Connector End Views

IP Fuse Block

Located by the body builder

Electrical Center Identification Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (Diesel)

On the left side of the driver's island

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Vehicle Control Module (Gas)

Mounted on top of the radiator support

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C200

At the top front of the steering column support, near the park brake pull button switch

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D101(Gas)

In the engine harness, 25 cm (10 in) from the A/C compressor clutch connector

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D101 (Diesel)

In the engine harness, 15 cm (6 in) from the breakout for the A/C compressor clutch, toward A/C compressor clutch connector

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G103

At the rear of the right cylinder head

Power and Grounding Component Views in Wiring Systems

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G104

At the rear of the right cylinder head

Power and Grounding Component Views in Wiring Systems

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G200

Mounted to the top front of the steering column support plate

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P100

Main wiring pass through at the bulkhead

Harness Routing Views in Wiring Systems

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R102 (Gas)

In the engine harness, 20 cm (8 in) from the ABS harness breakout

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R102 (Diesel)

On the IP side of the engine harness, 32 cm (12 in) from P100, in the breakout for the PCM

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R203 (Diesel)

Taped to the connector of the P/B booster fluid flow alarm, 20 cm (8 in) from the steering column connector breakout, toward the stoplamp switch

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S115

In the engine harness, 35 cm (13 in) from pass-through P100, in the engine compartment

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S122/S123 (Diode Splice)

In the breakout for the A/C compressor clutch, 21 cm (9 in) from the A/C compressor clutch connector

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S126 (Gas)

In the engine harness, 17 cm (7 in) from the breakout for the generator connector, toward the breakout for the VCM

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S140/S132 (Resistor Splice, Gas)

In the breakout for the VCM, 20 cm (8 in) from the main engine harness

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S140/S132 (R204 Resistor Splice, Diesel)

In the breakout for the PCM, 32 cm (13 in) from P100

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S168 (Diesel)

In the engine harness, 4 cm (2 in) from the breakout for C100 and C207, toward the battery junction block

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S204

In the IP harness, 26 cm (11 in) from the breakout for connector C200, toward the IP fuse block

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S211

In the IP harness, 5 cm (2 in) from the dimmer switch and IP cluster breakout, toward the IP fuse block

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S235

In the IP side of the engine harness, 24 cm (9 in) from P100, toward C200

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