GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Data Link Connector

On the left side of the lower IP

Data Link Communications Component Views

Data Link Communications Connector End Views

Electronic Brake Control Module (EBCM) (ABS-Hydraulic) C1 (2 cavities)

In the front chassis harness, mounted to the first crossmember

Antilock Brake System Component Views in Antilock Brake Systems

Antilock Brake System Connector End Views in Antilock Brake Systems

Electronic Brake Control Module (EBCM) (ABS-Hydraulic) C2 (24 cavities)

In the front chassis harness, mounted to the first crossmember

Antilock Brake System Component Views in Antilock Brake Systems

Antilock Brake System Connector End Views in Antilock Brake Systems

Electronic Brake Control Module (EBCM) (ABS-Air)

On the left rear of the cab bridge, near the MaxiFuse® Block

Air Antilock Brake System Component Views in Air- Antilock Brake Systems

Air Antilock Brake System Connector End Views in Air- Antilock Brake Systems

Engine Control Module (ECM)

Under the right seat, beneath a metal cover

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges, and Console

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Engine Control Module (ECM) C1 (40 cavities)

In the engine-cab harness, under the right seat, beneath a metal cover

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges, and Console

Engine Controls Connector End Views in Engine Controls-7.8L (Isuzu)

Engine Control Module (ECM) C2 (80 cavities)

In the engine-cab harness, under the right seat, beneath a metal cover

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges, and Console

Engine Controls Connector End Views in Engine Controls-7.8L (Isuzu)

IP Fuse Block

In the right top of the IP, under the access panel

Power and Grounding Component Views

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C200 (56 cavities)

In the lower IP harness, to the front chassis harness, in the left center of the cab, in the cab interface connector housing

Harness Routing Views

Inline Harness Connector End Views

C202 (56 cavities)

In the lower IP harness, to the front chassis harness, in the left center of the cab, in the cab interface connector housing

Harness Routing Views

Inline Harness Connector End Views

C218 (20 cavities)

In the lower IP harness, to the engine-cab harness, near the ECM

Harness Routing Views

Inline Harness Connector End Views

G105

On the left front of the #1 crossmember

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P100

On the front chassis harness, under the hood, in the center of the bulkhead, in the cab interface connector housing

Harness Routing Views

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Splice Pack 4

Part of the lower IP harness, Below the left side of the IP, to the right of the steering column, row 3

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Splice Pack 5

Part of the lower IP harness, Below the left side of the IP, to the right of the steering column, row 2

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S324

In the lower IP harness

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S325

In the lower IP harness

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S326

In the lower IP harness

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S327

In the lower IP harness

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S328

In the lower IP harness

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S330

In the lower IP harness

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S346

In the lower IP harness

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S347

In the lower IP harness

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S348

In the lower IP harness

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S402

In the lower IP harness

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S404

In the lower IP harness

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