GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Convenience Center

Under the left side of the IP, on the bulkhead

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

Under LH of the IP, left of the steering column, mounted to the bottom of the Knee Bolster

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electronic Brake Control Module (EBCM)

Near Brake Master Cylinder, at LF Wheelhousing

Antilock Brake System Component Views in ABS/Traction Control

Antilock Brake System Connector End Views in ABS/Traction Control

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

Headlamp Control Module (Luxury)

Lower Left of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Under Carpet Beneath Drivers Seat

SIR Component Views in SIR

SIR Connector End Views in SIR

Interface Card

Inside the Floor Console

Cellular Communication Component Views

Cellular Communication Connector End Views

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

Radio

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Transfer Case Shift Control Module (ATC)

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)

Vehicle Control Module (VCM)

Top of Left inner fender well

Engine Controls Component Views in Engine Controls (5.0L/5.7L)

VCM Connector End Views in Engine Controls (5.0L/5.7L)

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

C210

At the Convenience Center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C239

Behind RH of I/P, near heater motor

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C250

Within the IP Dash Assy, behind the IP Compartment Box

Cellular Communication Component Views

Cellular Communication Connector End Views

C251

Within the IP Dash Assy, behind the IP Compartment Box

Cellular Communication Component Views

Cellular Communication Connector End Views

C252

Within the IP Dash Assy, behind the IP Compartment Box

Cellular Communication Component Views

Cellular Communication Connector End Views

C305 (Luxury)

Cross Body harness, Inline to Floor Console harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C306

In the overhead console/to microphone and speaker

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C315

Within the Overhead Console

Cellular Communication Component Views

Cellular Communication Connector End Views

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, approx. 13 cm (5 in) from EBCM breakout

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S213

IP Harness, approx. 4 cm (1.5 in) from the steering column harness breakout, towards the DLC

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S245

Crossbody harness approx. 6.5 cm (2.5 in) from SDM breakout

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S270

Audio Jumper Harness, approx. 27.5 cm (11 in) from the radio harness split, towards the Vehicle Interface Unit (VIU)

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S271

Audio Jumper Harness, approx. 14.5 cm (5.5 in) from the radio harness split, towards the Vehicle Interface Unit (VIU)

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S275

Audio Jumper Harness, approx. 21 cm (8 in) from the radio harness split, towards the Vehicle Interface Unit (VIU)

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S280

IP harness, approx. 5 cm (2 in) from DLC breakout

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S292

IP harness, approx. 22 cm (8.5 in) before the radio harness breakout, from C304

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S294

IP harness, approx. 7 cm (2.5 in) from SIR harness breakout

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S298

IP harness, approx. 24 cm (9.5 in) from instrument cluster breakout, toward radio breakout

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