GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Wiring Harness Junction Block

Under the left side of the instrument panel near the left kick panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

On the left lower dash below the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Engine Wiring Harness Junction Block

At the left side of the engine compartment near the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fuse Block

On the lower left side of the IP

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Global Positioning Signal (GPS) Antenna

On the left rear window

Cellular Communication Component Views

Cellular Communication Connector End Views

Keypad

Near the middle of the IP

Cellular Communication Component Views

Cellular Communication Connector End Views

Radio

In the center of the IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Remote CD Player

Below the center of the IP in the console

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Microphone - (OnStar®)

On the left side of the overhead dome/reading lamps

Cellular Communication Component Views

Cellular Communication Connector End Views

Vehicle Communication Unit (VCU) - OnStar®

In the left side of IP near the instrument cluster

Cellular Communication Component Views

Cellular Communication Connector End Views

Vehicle Interface Unit (VIU) - OnStar®

In the right side of IP above the compartment box

Cellular Communication Component Views

Cellular Communication Connector End Views

C211

To the right of the IP connected to the right of the Vehicle Interface Unit (VIU)

Cellular Communication Component Views

Inline Harness Connector End Views in Wiring Systems

C212

In the middle of the IP near the back of the radio

Cellular Communication Component Views

Inline Harness Connector End Views in Wiring Systems

C248

In the left side of IP near the instrument cluster next to the VCU

Cellular Communication Component Views

Inline Harness Connector End Views in Wiring Systems

G203

On the left upper IP at the A pillar

Power and Grounding Component Views in Wiring Systems

--

P100

At the left rear of the engine compartment in the front of the dash

Power and Grounding Component Views in Wiring Systems

--

S235

In the console harness

--

--

S267

In the console harness

--

--

S268

In the console harness

--

--

S272

In the console harness

--

--

Splice Pack 203 (SP203)

On the top left side of the IP near the A pillar

Harness Routing Views in Wiring Systems

--

Splice Pack 205 (SP205)

On the left side of the IP behind the headlamp switch

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data link Communications