GM Service Manual Online
For 1990-2009 cars only

Cooling System Components P42

Name

Location

Locator View

Connector End View

Auxiliary Engine Coolant Fan (Diesel)

In front of the radiator

Cooling System Component Views

Cooling System Connector End Views

A/C Compressor Refrigerant Pressure Switch (Diesel)

In the A/C compressor high pressure line (body builder installed)

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Cooling System Connector End Views

Battery Junction Block

On the forward LH side of the bulkhead above P100

Power and Grounding Component Views in Wiring Systems

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Fan Control Relay (Diesel)

Engine bulkhead relay bracket under the battery junction block

Cooling System Component Views

Cooling System 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

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

G200

LH interior bulkhead near the relay bracket

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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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S110 (Gasoline)

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

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S116 (EFI Diesel)

In the engine harness, approximately 55 cm (21 in) from the breakout for C101

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S116 (MFI Diesel)

In the engine harness, approximately 5 cm (2 in) from the breakout for the cold advance solenoid, engine coolant temperature switch, toward the glowplug controller breakout

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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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Cooling System Components P32

Name

Location

Locator View

Connector End View

A/C Compressor Refrigerant Pressure Switch

In front of the radiator, next to the auxiliary engine coolant fan

Cooling System Component Views

Cooling System Connector End Views

Auxiliary Engine Coolant Fan Motor

In front of the radiator

Cooling System Component Views

Cooling System Connector End Views

Auxiliary Engine Coolant Fan Temperature Switch (Diesel)

In the thermostat housing crossover, above the engine near the front

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Cooling System Connector End Views

Battery Junction Block

On the forward LH side of the bulkhead above P100

Power and Grounding Component Views in Wiring Systems

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Engine Coolant Temperature (ECT) Sensor (Gas)

At the top front of the engine near the thermostat housing

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Engine Coolant Temperature (ECT) Sensor (Diesel)

At the upper RH front of the engine on the RH side of the coolant outlet tube

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fan Control Relay

On top of the steering column support, behind the steering column

Cooling System Component Views

Cooling System 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

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

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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S101 (Diesel)

In the engine harness, 16 cm (7 in) from the breakout for the auxiliary engine coolant fan motor, toward P100

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S101 (Gas)

In the engine harness, 39 cm (14 in) from P100

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S113 (Diesel)

In the engine harness, 9 cm (4 in) from the breakout for the auxiliary engine coolant fan motor, toward P100

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S128 (Diesel)

In the engine harness, 12 cm (5 in) from the glowplug controller breakout toward the waste gate solenoid breakout

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S150 (Diesel)

In the engine harness, 14 cm (6 in) from the breakout for the battery junction block and P100

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S150 (Gas)

In the engine harness, 4 cm (2 in) from the breakout for 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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S228 (Diesel)

In the IP side of the engine harness, 28 cm (11 in) from P100

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S235 (Gas)

In the IP side of the engine harness, 25 cm (10 in) from P100 toward C200

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