GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Bussed Electrical Center (BBEC)

LH side of dash, near IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector

Lower LH side of instrument panel

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Instrument Cluster

LH side of instrument panel

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

Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console

IP Fuse Block

LH side of the IP near the left front side door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Transfer Case Encoder Motor

Lower RH Side of automatic transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Shift Control Module

Behind RH kick panel

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Vehicle Speed Sensor, Front

Top left front of automatic transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Vehicle Speed Sensor, Rear

Top right rear of automatic transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Underhood Bussed Electrical Center (UBEC)

On the top of the left inner wheelwell

Power and Grounding Component Views in Wiring Systems

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C108 (7 Cavities)

Automatic transfer case extension harness to body harness, LH rear engine compartment near P100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (116 Cavities)

Body harness to IP harness, RH side of IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103

LH rear of engine block

Harness Routing Views in Wiring Systems

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G105

RH rear of engine block

Harness Routing Views in Wiring Systems

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G117

LH rear of engine compartment, near cruise control module

Harness Routing Views in Wiring Systems

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G205

RH dash panel, between C203 and splice packs

Harness Routing Views in Wiring Systems

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P100

IP bulkhead pass-through, LH rear of engine compartment, on the cowl

Harness Routing Views in Wiring Systems

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S106

(Circuit 451) Engine harness, between the breakouts to the connector for the rear heated oxygen sensors and the body harness connector, 7 cm from the breakout to the heated oxygen sensor connector

Harness Routing Views in Wiring Systems

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S118

(Circuit 850) Body harness, between the vehicle control module breakout and the blower motor relay breakout, 25 cm from the breakout to the VCM

Harness Routing Views in Wiring Systems

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S134

(Circuit 850) Automatic transfer case extension harness, in the breakout to the front transfer case vehicle speed sensor, 10  cm into the breakout

Harness Routing Views in Wiring Systems

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S152

(Circuit 451) Engine harness between the breakouts for the LR and RR engine block grounds, 15 cm from the breakout to the LR engine grounds

Harness Routing Views in Wiring Systems

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SP200

(Circuit 241) Strapped to the body harness in the center front of dash area, to the right of SP204

Harness Routing Views in Wiring Systems

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SP201

Body harness, LH side of IP, below IP fuse block

Harness Routing Views in Wiring Systems

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SP204

(Circuit 250, 1050) Strapped to the body harness in the center front of dash area, to the left of SP200

Harness Routing Views in Wiring Systems

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