GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Transfer Case (A4WD)

Behind the transmission

Transfer Case Control Component Views

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Automatic Transfer Case Shift Control Module

Behind the left kick panel.

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Convenience Center

On the left of the IP fuse block by the left kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Data Link Connector (DLC)

On the lower left side of the dash

Harness Routing Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Encoder Motor

Inside the transfer case, under the vehicle

Transfer Case Control Component Views

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Instrument Cluster

On the left side of the dash

HVAC Component Views in HVAC Systems - Manual

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

Instrument Panel (IP) Fuse Block

On the lower left side of the dash, next to the left side kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Propshaft Speed Sensor Front

Near the center of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Propshaft Speed Sensor Rear

Near the center of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Underhood Fuse Block (A4WD)

On the left side of the dash, near the battery

Harness Routing Views

Electrical Center Identification Views in Wiring Systems

Underhood Fuse Block (RWD)

On the left side of the dash, near the battery

Harness Routing Views

Electrical Center Identification Views in Wiring Systems

C100

In the left side front of the dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C224

In the transfer case harness 30.5 cm (12 in) from transfer case connector

Electrical Center Identification Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C308

In the transfer case harness 40.5 cm (15.9 in) from P301

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Inline Harness Connector End Views in Wiring Systems

C309

In the transfer case harness 31 cm (12.2 in) From P301

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Inline Harness Connector End Views in Wiring Systems

G110

In the IP harness 32 cm (12.6 in) from C102 breakout next the battery

Harness Routing Views in Wiring Systems

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P100

In the left side front of the dash, on the left of the bulkhead

Harness Routing Views in Wiring Systems

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P301

Under the vehicle near the transfer case

Harness Routing Views in Wiring Systems

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S206

In the IP harness 13 cm (5.1 in) from C100

Harness Routing Views in Wiring Systems

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S243

In the transfer case harness 6.5 cm (2.5 in) from transfer case connector C1 and C2 breakout toward C224

Harness Routing Views in Wiring Systems

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S260

In the IP harness 49 cm (19.3 in) from the right kick panel connector C205

HVAC Component Views in HVAC Systems - Manual

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Splice Pack #261 (SP261)

In the IP harness 20 cm (7.9 in) from relay blocks breakout toward the DLC.

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications