GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Data Link Connector (DLC)

Under the LH of the IP, LH of the steering column, mounted to the bottom of the knee bolster

Data Link Communications Component Views

Data Link Communications Connector End Views

Electronic Brake Control Module (EBCM)

Near the brake master cylinder, at the LF wheelhousing

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Electronic Variable Orifice (EVO)/Passlock Module

Under the center of the IP

Theft Deterrent System Component Views in Theft Deterrent

Theft Deterrent System Connector End Views in Theft Deterrent

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Under the carpet beneath the driver's seat

SIR Component Views in SIR

SIR Connector End Views in SIR

IP Fuse Block

To the left of the IP, near the left front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Powertrain Control Module (PCM)

Under the RH end of the IP, above the blower motor, behind the IP compartment box

Engine Controls Component Views in Engine Controls (6.5L)

Powertrain Control Module Connector End Views in Engine Controls (6.5L)

Radio

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Remote Control Door Lock Receiver

Under the center of the IP, to the right of the knee bolster

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

Vehicle Control Module (VCM)

Engine compartment, near the EBCM

Engine Controls Component Views in Engine Controls (5.7L) Engine Controls Component Views in Engine Controls (7.4L)

VCM Connector End Views in Engine Controls (5.7L) VCM Connector End Views in Engine Controls (7.4L)

Transfer Case Control Module (TCCM)

Under the IP, on the steering column support bracket

Transfer Case Control Component Views in Transfer Case Controls (NP1)

Transfer Case Control Connector End Views in Transfer Case Controls (NP1)

Transfer Case Shift Control Module

Under the LH of the IP, near the convenience center

Transfer Case Control Component Views in Transfer Case Controls (NP8)

Transfer Case Control Connector End Views in Transfer Case Controls (NP8)

C100

Part of the engine harness to IP harness, in the left rear side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Behind the right side of the IP, near the heater motor, in foam wrap

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C231

Part of the IP harness to SIR harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C239 (Luxury)

IP harness inline to the crossbody harness, next to C230

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C298

Behind the left side of the IP, near the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103 (Gas)

On the top front center of the engine, near the thermostat housing

Power and Grounding Component Views in Wiring Systems

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G104 (5.0L/5.7L)

Back side of the right cylinder head

Power and Grounding Component Views in Wiring Systems

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G104 (6.5L)

Top rear of the right cylinder

Power and Grounding Component Views in Wiring Systems

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G104 (7.4L)

Backside of the engine block, below the right cylinder head

Power and Grounding Component Views in Wiring Systems

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G200

Behind the left side of the IP, below the fuse block, on the tie bar

Power and Grounding Component Views in Wiring Systems

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S150

Engine harness, approximately 13 cm (5 in) from the EBCM breakout

Harness Routing Views in Wiring Systems

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S204

IP harness, approximately 10 cm (4 in) from C100, towards the data link connector (DLC)

Harness Routing Views in Wiring Systems

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S215

IP harness, approximately 8 cm (3 in) from the instrument cluster breakout, toward the radio connector's breakout

Harness Routing Views in Wiring Systems

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S272

IP harness, approximately 4 cm (1.5 in) from the auxiliary power outlet breakout

Harness Routing Views in Wiring Systems

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S280

IP harness, approximately 5 cm (2 in) from the DLC breakout

Harness Routing Views in Wiring Systems

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