GM Service Manual Online
For 1990-2009 cars only

Data Link Communications Components P42

Name

Location

Locator View

Connector End View

Data Link Connector (DLC)

On the lower LH side of the passenger compartment bulkhead on the side of the relay bracket

Data Link Communications Component Views

Data Link Communications Connector End Views

Electronic Brake Control Module (EBCM)

Below the radiator on the lower crossmember

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

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 LH 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

Transmission Control Module (MFI Diesel)

At the LH side of the drivers island on the relay bracket

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Vehicle Control Module (Gasoline)

At the LH side of the radiator support

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C110

Engine harness to the ABS harness, at the front of the LH frame rail near the steering gearbox

Harness Routing Views in Wiring Systems

Inline Harness 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

G108 (Diesel with Manual Trans)

On top of the thermostat housing

Power and Grounding Component Views in Wiring Systems

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G108 (All Gasoline, Diesel with Auto Trans)

At the rear of the LH cylinder head

Power and Grounding Component Views in Wiring Systems

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G200

LH interior bulkhead near the relay bracket

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P100

LH bulkhead left of the steering column

Harness Routing Views in Wiring Systems

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S104 (EFI Diesel)

In the engine harness, approximately 25 cm (10 in) from the breakout for the battery junction block

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S110 (Gasoline)

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

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S110 (Diesel)

In the engine harness, approximately 4 cm (2 in) from the ABS harness connectors C110 and C111 towards P100

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S143 (MFI Diesel)

In the engine harness, approximately 17 cm (7 in) from P100

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S143 (EFI Diesel)

In the engine harness, approximately 16 cm (6 in) from the A/C compressor clutch breakout towards C200

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S143 (Gasoline)

In the engine harness, approximately 6 cm (2 in) from the C200 breakout towards the MAF sensor

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S144 (Gasoline)

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

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S144 (Diesel)

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

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S150 (Gasoline)

In the engine harness, approximately 18 cm (7 in) from the breakout for C200 toward P100

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S168 (Diesel, Automatic Transmission)

In the engine harness, approximately 17 cm (7 in) from P100

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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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Data Link Communications Components P32

Name

Location

Locator View

Connector End View

Data Link Connector (DLC)

At the lower LH side of the steering column on the support bracket

Data Link Communications Component Views

Data Link Communications Connector End Views

Electronic Brake Control Module (EBCM)

Below the radiator on the lower crossmember

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

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 LH 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 to the top of the radiator support

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C110

Engine harness to the ABS harness, at the front of the LH frame rail near the brake master cylinder

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Engine harness to the IP harness, at the top front of the steering column near the park brake pull button switch

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G108

On top of the thermostat housing

Power and Grounding Component Views in Wiring Systems

--

G200

Mounted to the top front of the steering column support plate

--

--

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, 20 cm (8 in) from the breakout for C100 and C207, toward the auxiliary engine coolant fan motor

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S150 (Diesel)

In the engine harness, 14 cm (6 in) from P100, toward C100 and C207

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S150 (Gas)

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

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S166 (Diesel)

In the engine harness, 11 cm (5 in) from the breakout for the ABS ground

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S166 (Gas)

In the engine harness, 5 cm (2 in) toward passthrough P100 from the breakout for the ABS harness

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S170 (Gas)

In the engine harness, 15 cm (6 in) from the breakout for the cruise control module, toward the battery junction block

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S202 (Diesel)

In the IP side of the engine harness, 7 cm (3 in) from the breakout for the wiper switch, toward P100

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S204

In the IP harness, 26 cm (10 in) from the horn relay breakout, toward P100

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S235 (Diesel)

In the IP side of the engine harness, 23 cm (9 in) from P100 toward C200

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S235 (Gas)

In the IP side of the engine harness, 26 cm (10 in) from P100 toward C200

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