GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Auxiliary Battery

LH frame rail, center of vehicle

Engine Electrical Component Views

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Battery

Front RH side of engine compartment

Engine Electrical Component Views

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Battery Junction Block

Front RH side of engine compartment, nest to the radiator

Power and Grounding Component Views in Wiring Systems

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Generator (4.3L)

RH front of engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views

Generator (5.0L, 5.7L)

RH front of engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views

Generator (7.4L)

RH front of engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views

Generator (6.5L)

RH front of engine

Engine Controls Component Views in Engine Controls

Engine Electrical Connector End Views

Generator (Ambulance Pkg)

LH front of engine

Power and Grounding Component Views in Wiring Systems

Engine Electrical Connector End Views

Glow Plug Relay

Top RH side of engine

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

IP Fuse Block

LH kick panel

Engine Electrical Component Views

Ignition Switch

RH side of steering column

Tilt Wheel/Column Component Views in Steering Wheel - Tilt

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Instrument Cluster

LH side of IP

Engine Electrical Component Views

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

Park/Neutral Position Switch

LH side of transmission

Harness Routing Views in Wiring Systems

Automatic Transmission Inline Harness Connector End View

or

Automatic Transmission Inline Harness Connector End View in Wiring Systems

Starter Motor

RH lower rear of engine

Engine Electrical Component Views

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Starter Relay

Underhood Fuse-Relay Center, LH front of engine compartment

Engine Electrical Component Views

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Starter Solenoid (4.3L)

RH lower rear of engine, part of starter

Engine Electrical Component Views

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Starter Solenoid (5.0L, 5.7L, 7.4L)

RH lower rear of engine, part of starter

Engine Electrical Component Views

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Starter Solenoid (6.5L)

RH lower rear of engine, part of starter

Engine Electrical Component Views

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Underhood Fuse-Relay Center

Engine compartment, left fender

Engine Electrical Component Views

Power and Grounding Connector End Views in Wiring Systems

C100

LH rear of Engine Compartment at bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C115

RH side of engine near generator

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Steering column harness at base of column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C213

IP harness behind LH side of IP near center of vehicle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G100

LH engine compartment, near fender well

Harness Routing Views in Wiring Systems

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G103 (4.3L)

Back of LH cylinder head

Harness Routing Views in Wiring Systems

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G103 (5.0L, 5.7L, 7.4L)

Back of LH cylinder head

Harness Routing Views in Wiring Systems

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G103 (6.5L)

Front of RH cylinder head

Harness Routing Views in Wiring Systems

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G110

RH engine compartment, near negative battery post

Harness Routing Views in Wiring Systems

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G300

LH frame rail near auxiliary battery

Harness Routing Views in Wiring Systems

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P101

Under RH side of IP

Harness Routing Views in Wiring Systems

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S101 (6.5L)

Engine harness, approx 22 cm (8.7 in) from optical fuel temperature sensor breakout toward C100 breakout

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S103 (4.3L)

Engine harness, approx 4 cm (1.6 in) from fuel injector breakout toward transmission

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S103 (5.0L, 5.7L)

Engine harness, approx 4 cm (1.6 in) from oxygen sensor breakout toward fuel injector breakout

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S103 (7.4L)

Engine harness, approx 4 cm (1.6 in) from ECT sensor breakout toward C100 breakout

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S152 (4.3L)

Engine harness, approx 16 cm (6.3 in) from fuel injector breakout toward G103 breakout

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S152 (5.0L, 5.7L)

Engine harness, approx 4 cm (1.6 in) from fuel injector breakout toward G103 breakout

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S158 (6.5L)

Engine harness, approx 4 cm (1.6 in) from G103 breakout toward A/C compressor

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S216

IP harness, approx 8 cm (3.2 in) from C200 breakout toward instrument cluster breakout

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