GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Data Link Connector (DLC)

Under LH of IP, LH of Steering Column, mounted to bottom of Knee Bolster

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Front Axle Actuator

On the RH side of the front differential

Transfer Case Control Component Views

Transfer Case Control 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

Park/Neutral Position (PNP) Switch

At LH center of Transmission

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Powertrain Control Module (PCM) (Diesel)

Under RH end of IP, above Blower Motor, behind IP Compartment Box

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Tranfer Case Encoder

LH Center of Transfer Case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Tranfer Case Shift Motor

Under Transfer Case Input Shaft

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Select Switch

Center of IP, RH of Steering Column Shift Lever

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Control Module

Under LH of IP, near Convenience Center

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Switch

LH side of Transfer Case on top

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Vehicle Control Module (VCM) (Gas)

Engine Compartment, near EBCM

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Vehicle Speed Sensor (VSS) Buffer (6.5L)

Under the Instrument Panel on the RH side

Harness Routing Views in Wiring Systems

Engine Controls Connector End Views in Engine Controls

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

C120

Part of the engine harness to front axle actuator, in the rear of the engine, near the transmission

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C140

In the left rear side of the engine compartment, under the EBCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C142

In the left rear side of the engine compartment, under the EBCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Behind the right side of the IP, near the heater motor, in foam wrap

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C227

Above the brake pedal mount

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G105 (Gas)

Front of engine block, RH side, below belt tensioner

Power and Grounding Component Views in Wiring Systems

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G105 (Diesel)

Rear of cylinder head, RH side, under cylinder #7 intake bolt

Power and Grounding Component Views in Wiring Systems

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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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P100

In the left rear side of the engine compartment, at the bulkhead, above C100

Harness Routing Views in Wiring Systems

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P101

In the right rear side of the engine compartment, at the bulkhead

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S107 (6.5L)

Engine harness, approx. 32 cm (12.5 in) from EBCM breakout going away from C100

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S111 (5.0L, 5.7L)

Engine harness, approx. 10 cm (4 in) from EBCM breakout, toward taillamp harness breakout

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S111 (6.5L)

Engine harness approx. 11 cm (4 in) from EBCM breakout, toward glow plugs

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S111 (7.4L)

Engine harness, approx. 7 cm (2.5 in) from EBCM breakout

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S147 (Gas)

Engine harness, approx. 5 cm (2 in) from EGR valve breakout, toward taillamp harness breakout

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S147 (Diesel)

Engine harness, approx. 4 cm (1.5 in) from starter motor solenoid breakout

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S162 (5.0L, 5.7L )

Engine harness, approx. 17 cm (6.5 in) from starter solenoid breakout, toward LH oxygen sensor breakout

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S162 (7.4L)

Engine harness, approx. 15 cm (6 in) from RH bank oxygen sensor breakout, toward starter solenoid breakout

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S204

IP harness, approx. 10 cm (4 in) from C100, towards Data Link Connector (DLC)

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S212

IP harness, approx. 8 cm (3 in) from inflatable restraint switch breakout

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S213

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

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S217

IP harness, approx. 16 cm (6 in) from instrument cluster harness breakout, toward radio connectors breakout

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S218

IP harness, approx. 16 cm (6.3 in) from the Transfer Case Select Switch Brakeout toward C200

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S221

IP harness, approx. 40 cm (15.5 in) from instrument cluster breakout

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S235

IP harness, approx. 4 cm (1.5 in) from steering column harness breakout, C100

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S298

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

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S302

Selectable 4WD harness, approx. 10 cm (4 in) from the Tranfer Case Relay breakout, toward the Front Axle Switch

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