GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Cellular Telephone Antenna

In the rear of the vehicle, taped to the right side of the inside of the rear window glass (circular antenna)

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Cellular Telephone Handset

Center of the passenger compatment, inside the center console storage area

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Cellular Telephone Interface Board

Center of the passenger compartment, beneath the center console

Cellular Communication Component Views

Cellular Communication Connector End Views

Cellular Telephone Microphone (w/o UE1)

Center of the passenger compartment, near the rear view mirror in the headliner

Cellular Communication Component Views

Cellular Communication Connector End Views

Cellular Telephone Module (w/o UE1)

Front of the rear compartment

Cellular Communication Component Views

Cellular Communication Connector End Views

Cellualr Telephone Module (w/UE1, UV8)

In the rear compartment, behind the rear shelf trim, mounted to the right side of the rear shelf carrier

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Cellular Communication Connector End Views

Radio (w/o UY4)

Center of the instrument panel, below the HVAC controls

Entertainment Component Views

Entertainment Connector End Views

Radio (w/UY4)

Left side of the rear compartment, under the rear package shelf

Entertainment Component Views

Entertainment Connector End Views

Radio Amplifier

Left hand rear of the passenger compartment, behind the rear seat back

Entertainment Component Views

Entertainment Connector End Views

Rear Fuse Block

Left hand rear of the passenger compartment, under the rear seat

Power and Grounding Component Views

Power and Grounding Connector End Views

RF Signal Amplifier

Right front corner of the rear compartment, below the rear shelf

Cellular Communication Component Views

Cellular Communication Connector End Views

Vehicle Communication Unit (VCU)

Rear of the passenger compartment, behind the rear seat back, mounted to the vehicle interface unit (VIU)

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Cellular Communication Connector End Views

Vehicle Interface Unit (VIU)

Rear of the passenger compartment, behind the rear seat back, mounted to the electronics bay

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Cellular Communication Connector End Views

C304 (30 cavities)

Console harness to body harness, left hand front of the center console near the rear blower motor

Harness Routing Views

Inline Harness Connector End Views

C319 (2 cavities)

Headliner harness to body harness, left hand rear of the passenger compartment near the rear shelf panel, on the base of the sail panel

Harness Routing Views

Inline Harness Connector End Views

C345 (30 cavities)

Body harness to the OnStar jumper harness, behind the rear seat back, on the right side of the electronics bay

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Inline Harness Connector End Views

C346 (40 cavities)

OnStar jumper harness to the cellular telephone module harness, behind the rear seat back, on the right side of the electronics bay

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Inline Harness Connector End Views

G401

Right hand rear corner of the rear compartment, near the C403 connector

Power and Grounding Component Views

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S360

In the OnStar jumper harness, beween connector C345 and breakout of the vehicle interface unit (VIU) connectors

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S361

In the OnStar jumper harness, beween connector C345 and breakout of the vehicle interface unit (VIU) connectors

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