GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Electronic Variable Orifice (EVO)/Passlock Module

Under the center of the IP

Theft Deterrent System Component Views in Theft Deterrent

Theft Deterrent System Connector End Views in Theft Deterrent

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

Steering Assist Control Solenoid

Part of the power steering pump, mounted to the lower fluid fitting

Steering Assist Component Views

Steering Assist Connector End Views

Steering Handwheel Speed Sensor (HWSS)

On the steering column, near the bulkhead

Steering Assist Component Views

Steering Assist Connector End Views

Vehicle Control Module (VCM)

In the engine compartment, on the left fender

Engine Controls Component Views in Engine Controls 4.3L or Engine Controls Component Views in Engine Controls 5.0L, 5.7L or Engine Controls Component Views in Engine Controls 7.4L

VCM Connector End Views in Engine Controls 4.3L or VCM Connector End Views in Engine Controls 5.0L, 5.7L or VCM Connector End Views in Engine Controls 7.4L

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

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

G103 (Gas)

On the right front side of the engine, near the thermostat housing

Harness Routing Views in Wiring Systems

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G104 (5.0L/5.7L)

Backside of the right cylinder head

Harness Routing Views in Wiring Systems

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G104 (6.5L)

Top rear of the right cylinder head

Harness Routing Views in Wiring Systems

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G104 (7.4L)

Backside of the engine block, below the right cylinder head

Harness Routing Views in Wiring Systems

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S102 (6.5L)

Engine harness approx. 6.5 cm (2.5 in) from trans connector breakout, towards the Starter Solenoid harness breakout

Harness Routing Views in Wiring Systems

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S103 (6.5L)

Engine harness, approx. 12 cm (4.7 in) from starter solenoid breakout, towards the Underhood Lamp harness breakout

Harness Routing Views in Wiring Systems

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S103 (7.4L - A/T)

Engine harness, approx. 8 cm (3 in) from the EGR Valve harness breakout, towards the Ignition Coil harness breakout

Harness Routing Views in Wiring Systems

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S150

Engine harness, approx. 13 cm (5 in) from EBCM breakout

Harness Routing Views in Wiring Systems

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S213

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

Harness Routing Views in Wiring Systems

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S221

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

Harness Routing Views in Wiring Systems

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S228

RF seat harness, approx. 5 cm (2 in) from power seat lumbar switch breakout

Harness Routing Views in Wiring Systems

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S280

IP harness, approx. 5 cm (2 in) from DLC breakout

Harness Routing Views in Wiring Systems

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