GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (PZM)

In the left rear of the passenger compartment, behind the rear seat, on the electronics bay

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Coolant Level Switch

On the right side of the engine compartment, in the bottom of the coolant surge tank

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

Door Jamb Switch, Left Front

On the rear of the left front door, on the door latch assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Engine Oil Pressure Switch

On the center front of the engine, near the battery

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Headlamp Switch

On the left side of the IP, to the left of the steering column

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Inflatable Restraint Sensing And Diagnostic Module (SDM)

In the left side of the passenger compartment, under the left front seat

--

--

Key-In-Ignition Switch

In the left front of the passenger compartment, in the steering column, near the ignition lock cylinder

--

--

Powertrain Control Module (PCM)

On the left front corner of the engine compartment, under the air cleaner housing

--

--

Seat Belt Switch, Left Front

In the left front of the passenger compartment, in the front seat belt buckle

--

--

C202 (47 cavities)

Body harness to the steering column harness, under the left side of the IP, near the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (16 cavities)

Body harness to the IP harness, under the right side of the IP, near the IP compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C205 (23 cavities)

Body harness to the engine harness, under the right side of the IP, near the IP compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (6 cavities) (DeVille)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (8 cavities) (Eldorado)

Body harness to the left seat harness, in the left side of the passenger compartment, below the front seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G100

On the right front corner of the engine compartment, on the radiator support

Power and Grounding Component Views in Wiring Systems

--

G102

On the lower right rear of the engine, near the power steering rack

Power and Grounding Component Views in Wiring Systems

--

G203

In the left front of the passenger compartment, behind the kick panel

Power and Grounding Component Views in Wiring Systems

--

G302

Under the left front Seat, on seat pan bar 3

Power and Grounding Component Views in Wiring Systems

--

P101

On the left rear of the engine compartment, near the strut tower

Harness Routing Views in Wiring Systems

--

P500

On the front of the left front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

--

S108

In the body harness, approximately 8.5 cm (3.35 in) from the C103 breakout

Harness Routing Views in Wiring Systems

--

S125

In the engine harness, approximately 4 cm (1.57 in) from the throttle position sensor connector

Harness Routing Views in Wiring Systems

--

S201

In the body harness, approximately 2.5 cm (0.98 in) from the G204 breakout

Harness Routing Views in Wiring Systems

--

S216

In the IP harness, approximately 21 cm (8.27 in) from the valet switch connector

Harness Routing Views in Wiring Systems

--

S307

In the body harness, approximately 1.5 cm (0.59 in) from the rear seat channel breakout

Harness Routing Views in Wiring Systems

--

S313

In the body harness, approximately 6.5 cm (2.56 in) from the G302 breakout

Harness Routing Views in Wiring Systems

--

S323 (DeVille)

In the body harness, approximately 28 cm (11.02 in) from the radio connector breakout

Harness Routing Views in Wiring Systems

--

S323 (Eldorado)

In the body harness, approximately 30 cm (11.81 in) from the P600 breakout

Harness Routing Views in Wiring Systems

--

S351 (with A45)

In the left seat harness, approximately 4.5 cm (1.77 in) from the power seat motor breakout

Harness Routing Views in Wiring Systems

--

S351 (DeVille without A45)

In the left seat harness, approximately 6 cm (2.36 in) into the left seat belt switch breakout

Harness Routing Views in Wiring Systems

--

S351 (Eldorado without A45)

In the left seat harness, approximately 3 cm (1.18 in) from the C305 breakout

Harness Routing Views in Wiring Systems

--