GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Ambient Light Sensor

In the center top of the IP, in the defroster grille

Lighting Systems Component Views

Lighting Systems Connector End Views

Ashtray Lamp

In the center of the IP, in the ash tray

Lighting Systems Component Views

Lighting Systems Connector End Views

Body Control Module (SBM)

Under the right side of the IP, near the rear of the IP compartment

--

Body Control System Connector End Views in Body Control System

Data Link Connector (DLC)

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

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Driver Door Module (DDM)

Behind the left front door trim panel, above the radio speaker

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Driver Information Switch

In the left side of the IP, on the right side of the instrument cluster

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Head-Up Display (HUD)

In the left top of the IP, under the upper IP pad

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

Headlamp Switch

In the left side of the IP, left of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

Heater and A/C Control

In the center of the instrument panel, below the radio

HVAC Component Views in HVAC Systems with A/C-Automatic

HVAC Connector End Views in HVAC Systems with A/C-Automatic

Heater and A/C Programmer

Under the left side of the IP, near the rear of the IP compartment

HVAC Component Views in HVAC Systems with A/C-Automatic

HVAC Connector End Views in HVAC Systems with A/C-Automatic

High Mounted Stoplamp (HMS)

In the center rear of the passenger compartment, on the center of the rear shelf

Lighting Systems Component Views

Lighting Systems Connector End Views

Inflatable Restraint Steering Wheel Module

In the left front of the passenger compartment, on the steering wheel

SIR Component Views in SIR

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Inflatable Restraint Steering Wheel Module Coil

In the left front of the passenger compartment, at the base of the steering wheel

SIR Component Views in SIR

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Instrument Cluster

In the left side of the IP, above the steering column

Instrument Cluster and HUD Component Views in Instrument Panel, Gauges and Console

Instrument Cluster and HUD Connector End Views in Instrument Panel, Gauges and Console

IP Compartment Lamp

In the right side of the IP, in the IP compartment

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Lighting Systems Connector End Views

IP Compartment Lamp Switch

In the right side of the IP, in the IP compartment

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Lighting Systems Connector End Views

IP Junction Block

Under the right side of the IP, near the rear of the IP compartment

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Lamp Control Module (LCM)

Under the left side of the IP, to the right of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Backup Lamp

Left rear of the vehicle, near the license plate

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Cornering Lamp

Left front of the vehicle, near the headlamp

Lighting Systems Component Views

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LH Footwell Courtesy Lamp

Under the left side of the IP, on the IP sound insulator

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Front Courtesy/Reading Lamp

On the right front side of the passenger compartment, in the headliner

Lighting Systems Component Views

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LH Front Door Courtesy Lamp

On the left front door, in the door trim panel

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Front Door Jamb Switch

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

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

LH Front Door Lock Cylinder Switch

In the left front door, on the door lock cylinder

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

LH Front Park/Turn Signal Lamp

On the left front of the vehicle, near the headlamp

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Front Power Window Switch

On the left front door trim panel, on the armrest

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

LH Front Reading Lamp Switch

On the left front of the passenger compartment, in the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Front Side Marker Lamp

On the left front corner of the vehicle, near the headlamp

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Front Vanity Mirror

On the left front of the passenger compartment, in the sun visor

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Heated Seat Switch

On the center of the IP, near the HVAC control

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Power Seat Connector End Views in Seats

LH Rear Courtesy/Reading Lamp

On the right front of the passenger compartment, in the headliner

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--

LH Rear Door Courtesy Lamp

On the left rear door, in the door trim panel

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Rear Door Jamb Switch

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

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

LH Rear Reading Lamp Switch

On the left rear of the passenger compartment, in the headliner

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Lighting Systems Connector End Views

LH Rear Side Marker Lamp

On the left rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

LH Rear Vanity Mirror

On the right front of the passenger compartment, in the headliner

--

--

LH Tail/Signal Lamp

On the left rear of the vehicle, in the tail lamp assembly

Lighting Systems Component Views

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LH Tail/Stop Lamp

On the left rear of the vehicle, in the tail lamp assembly

Lighting Systems Component Views

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License Lamp

In the center rear of the rear compartment lid, near the license plate

Lighting Systems Component Views

Lighting Systems Connector End Views

Office Work Lamp

In the front of the passenger compartment, in the headliner

--

--

Panel Dimming Module

Under the left side of the IP, to the right of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

Passenger Door Module (PDM)

Behind the right front door trim panel, above the radio speaker

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Passenger Temperature Control

On the right side of the IP, near the IP compartment

HVAC Component Views in HVAC Systems with A/C-Automatic

HVAC Connector End Views in HVAC Systems with A/C-Automatic

Powertrain Control Module (PCM)

On the left front of the engine compartment, in the air cleaner housing

Engine Controls Component Views in Engine Controls-3.8L

Powertrain Control Module Connector End Views in Engine Controls-3.8L

Radio

In the center of the IP, above the HVAC control

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Rear Compartment Lamp

In the center of the rear compartment, under the rear shelf

Lighting Systems Component Views

Lighting Systems Connector End Views

Rear Compartment Lid Latch Switch

In the center of the rear compartment, on the rear compartment latch

Lighting Systems Component Views

Lighting Systems Connector End Views

Rear Door Module (RDM)

In the right rear of the passenger compartment, under the rear seat cushion

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Rear Junction Block

In the center right rear of the passenger compartment, under the rear seat cushion

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Remote Function Actuator (RFA) Module

In the center rear of the passenger compartment, under the rear shelf trim panel

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

RH Backup Lamp

On the right rear of the vehicle, near the license plate

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Cornering Lamp

On the right front of the vehicle, near the headlamp

Lighting Systems Component Views

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RH Footwell Courtesy Lamp

Under the right side of the IP, on the IP sound insulator

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Front Courtesy/Reading Lamp

On the right front of the passenger compartment, in the headliner

Lighting Systems Component Views

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RH Front Door Courtesy Lamp

On the right front door, in the door trim panel

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Front Door Jamb Switch

In the rear of the right front door, on the door latch assembly

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

RH Front Door Lock Cylinder Switch

In the right front door, on the door lock cylinder

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

RH Front Park/Turn Signal Lamp

On the right front of the vehicle, near the headlamp

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Front Power Window Switch

On the right front door trim panel, on the armrest

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

RH Front Reading Lamp Switch

On the right front of the passenger compartment, in the headliner

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Front Side Marker Lamp

On the right front corner of the vehicle, near the headlamp

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Front Vanity Mirror

On the right front of the passenger compartment, in the sun visor

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Heated Seat Switch

On the center of the IP, near the HVAC control

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Power Seat Connector End Views in Seats

RH Rear Courtesy/Reading Lamp

On the right rear of the passenger compartment, in the headliner

--

--

RH Rear Door Jamb Switch

On the rear of the right rear door, on the door latch assembly

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

RH Rear Reading Lamp Switch

On the right rear of the passenger compartment, in the headliner

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Lighting Systems Connector End Views

RH Rear Side Marker Lamp

On the right rear of the vehicle

Lighting Systems Component Views

Lighting Systems Connector End Views

RH Rear Vanity Mirror

On the right rear of the passenger compartment, in the rear sun visor

--

--

RH Tail/Signal Lamp

On the right rear of the vehicle, in the tail lamp assembly

Lighting Systems Component Views

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RH Tail/Stop Lamp

On the right rear of the vehicle, in the tail lamp assembly

Lighting Systems Component Views

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Shift Interlock Actuator

On the left front of the passenger compartment, on the base of the steering column

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Tilt Wheel/Column Connector End Views in Steering Wheel and Column-Tilt

Steering Column Fuse Holder

On the left side of the passenger compartment, at the base of the steering column

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--

Steering Wheel Control Switch

On the left side of the passenger compartment, in the steering wheel

--

--

Stoplamp/BTSI Switch

Under the left side of the IP, near the brake pedal

Tilt Wheel/Column Component Views in Steering Wheel and Column-Tilt

Tilt Wheel/Column Connector End Views in Steering Wheel and Column-Tilt

Turn Signal Flasher

Under the left side of the IP, to the right of the steering column

Lighting Systems Component Views

Lighting Systems Connector End Views

Turn Signal/Hazard Switch

In the left front of the passenger compartment, in the steering column

Lighting Systems Component Views

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Underhood Junction Block

In the right front of the engine compartment, near the battery

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Lamp

In the rear of the engine compartment, on the underside of the hood

Lighting Systems Component Views

Lighting Systems Connector End Views

C112 (5 cavities)

Forward lamp harness to the left head lamp harness, in the left front of the vehicle, near the head lamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C113 (5 cavities)

Body harness to the forward lamp harness, in the left side of the engine compartment, near the windshield washer reservoir

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C114 (5 cavities)

Forward lamp harness to the right head lamp harness, in the right front of the vehicle, near the head lamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C116 (10 cavities)

Body harness to the body harness, in the right rear of the engine compartment, near the windshield wiper motor

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C125 (2 cavities)

Body harness to the underhood lamp harness, in the left rear of the engine compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (16 cavities)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201 (10 cavities)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C202 (24 cavities)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C204 (23 cavities)

IP harness to the knee bolster harness, under the right side of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C205 (16 cavities)

IP harness to the HVAC harness, behind the right side of the IP, on the HVAC module

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C206 (24 cavities)

IP harness to the steering column harness, under the left side of the IP, above the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301 (10 cavities)

Body harness to the left rear door harness, in the left side of the passenger compartment, near P700

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C303 (10 cavities)

Body harness to the right rear door harness, in the right side of the passenger compartment, near P800

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C307 (10 cavities)

Body harness to the headliner harness, in the right rear of the passenger compartment, mounted on the upper sail panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C310 (24 cavities)

Body harness to the rear shelf harness, in the right front of the rear compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C401 (6 cavities)

Body harness to the center tail lamp harness, in the left rear of the rear compartment lid

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C404 (4 cavities)

Body harness to the left tail lamp harness, in the left side of the rear compartment, near the left tail lamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C405 (4 cavities)

Body harness to the right tail lamp harness, in the right side of the rear compartment, near the right tail lamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C500 (10 cavities)

Body harness to the left front door trim harness, under the left front door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C602 (8 cavities)

Body harness to the right front door trim harness, under the right front door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C700 (10 cavities)

Left rear door harness to the left rear door trim harness, under the left rear door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C701 (6 cavities)

Left rear door harness to the left rear jamb switch harness, under the left rear door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C800 (10 cavities)

Right rear door harness to the right rear door trim harness, under the right rear door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C801 (6 cavities)

Right rear door harness to the right rear jamb switch harness, under the right rear door trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G105

In the right rear of the engine compartment, near the base of the underhood junction block

Power and Grounding Component Views in Wiring Systems

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G106

In the left side of the engine compartment, near the base of the air cleaner housing

Power and Grounding Component Views in Wiring Systems

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G201

In the right front of the passenger compartment, under the kick panel trim plate

Power and Grounding Component Views in Wiring Systems

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G202

In the left front of the passenger compartment, under the kick panel trim plate

Power and Grounding Component Views in Wiring Systems

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G400

In the right side of the rear compartment, mounted on the rear of the wheel house

Power and Grounding Component Views in Wiring Systems

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G402

In the left side of the rear compartment, on the rear of the wheel house

Power and Grounding Component Views in Wiring Systems

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P100

In the left rear of the engine compartment, near the base of the windshield washer reservoir

Harness Routing Views in Wiring Systems

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P401

In the left rear corner of the rear compartment, near the left rear side marker lamp

Harness Routing Views in Wiring Systems

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P402

In the right rear corner of the rear compartment, near the right rear side marker lamp

Harness Routing Views in Wiring Systems

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P404

In the left rear of the rear compartment, near the tail lamp assembly

Harness Routing Views in Wiring Systems

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P405

In the right rear of the rear compartment, near the tail lamp assembly

Harness Routing Views in Wiring Systems

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P406

In the left rear of the rear compartment lid, near the left hand back up lamp

Harness Routing Views in Wiring Systems

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P500

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

Harness Routing Views in Wiring Systems

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P600

In the front of the right front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

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P700

In the front of the left rear door jamb, near the door hinges

Harness Routing Views in Wiring Systems

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P800

In the front of the right rear door jamb, near the door hinges

Harness Routing Views in Wiring Systems

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S101

In the forward lamp harness, approximately 54 cm (21.2 in) from the underhood fuse block

Harness Routing Views in Wiring Systems

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S102

In the forward lamp harness, approximately 33 cm (12.9 in) from the G106 ground

Harness Routing Views in Wiring Systems

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S109

In the right headlamp harness, approximately 15 cm (5.9 in) from the C114 connector

Harness Routing Views in Wiring Systems

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S110

In the left headlamp harness, approximately 15 cm (5.9 in) from the C112 connector

Harness Routing Views in Wiring Systems

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S200

In the body harness, approximately 7 cm (2.5 in) from P100

Harness Routing Views in Wiring Systems

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S201

In the body harness, approximately 9 cm (3.5 in) from the C203 connector

Harness Routing Views in Wiring Systems

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S203

In the body harness, approximately 6 cm (2.4 in) from P500 breakout

Harness Routing Views in Wiring Systems

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S205

In the body harness, approximately 38 cm (14.9 in) from the G202 ground

Harness Routing Views in Wiring Systems

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S208

In the body harness, approximately 35 cm (13.7 in) from the G201 ground

Harness Routing Views in Wiring Systems

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S210

In the IP harness, approximately 18.5 cm (7.2 in) from the head-up display module

Harness Routing Views in Wiring Systems

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S211

In the IP harness, approximately 48.5 cm (19.0 in) from the radio

Harness Routing Views in Wiring Systems

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S212

In the IP harness, approximately 51.5 cm (20.2 in) from the HVAC control

Harness Routing Views in Wiring Systems

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S213

In the IP harness, approximately 44 cm (17.3 in) from the HVAC control

Harness Routing Views in Wiring Systems

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S216

In the knee bolster harness, approximately 87.5 cm (34.4 in) from the C204 connector

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--

S217

In the knee bolster harness, approximately 94 cm (37.0 in) from the C204 connector

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--

S298

In the steering column harness, approximately 20 cm (7.9 in) from C202

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--

S299

In the steering column harness, approximately 20 cm (7.9 in) from C202

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--

S301

In the headliner harness, approximately 51 cm (20.1 in) from the sunroof switch

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--

S302

In the headliner harness, approximately 60 cm (23.5 in) from the C305 connector

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--

S303

In the headliner harness, approximately 128.5 cm (50.5 in) from the C305 connector

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--

S304

In the headliner harness, approximately 47 cm (18.5 in) from the inside rearview mirror

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--

S310

In the body harness, approximately 22 cm (8.6 in) from the C301 connector breakout

Harness Routing Views in Wiring Systems

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S311

In the body harness, approximately 32 cm (12.5 in) from the C301 connector breakout

Harness Routing Views in Wiring Systems

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S400

In the body harness, approximately 30 cm (11.8 in) from the G402 ground

Harness Routing Views in Wiring Systems

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S401

In the body harness, approximately 80 cm (31.4 in) from the C305 connector

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--

S402

In the left rear corner lamp harness, approximately 17.5 cm (6.8 in) from the C404 connector

Harness Routing Views in Wiring Systems

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S403

In the right rear corner lamp harness, approximately 17.5 cm (6.8 in) from the C405 connector

Harness Routing Views in Wiring Systems

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S404

In the left rear corner lamp harness, approximately 10 cm (3.9 in) from the C404 connector

Harness Routing Views in Wiring Systems

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S405

In the right rear corner lamp harness, approximately 10 cm (3.9 in) from the C405 connector

Harness Routing Views in Wiring Systems

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S406

In the tail lamp harness, approximately 16.5 cm (6.5 in) from the C401 connector

Harness Routing Views in Wiring Systems

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S407

In the tail lamp harness, approximately 6.5 cm (2.6 in) from the license lamp breakout

Harness Routing Views in Wiring Systems

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S408

In the tail lamp harness, approximately 12 cm (4.7 in) from the license lamp breakout

Harness Routing Views in Wiring Systems

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S409

In the tail lamp harness, approximately 10 cm (3.9 in) from the C401 connector

Harness Routing Views in Wiring Systems

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S500

In the left front door harness, approximately 15.5 cm (6.1 in) from the left door switch breakout

Harness Routing Views in Wiring Systems

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S501

In the left front door harness, approximately 4 cm (1.5 in) from the left door switch breakout

Harness Routing Views in Wiring Systems

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S502

In the left front door harness, approximately 23 cm (9.0 in) from the left door switch breakout

Harness Routing Views in Wiring Systems

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S503

In the left front door harness, approximately 29.5 cm (11.6 in) from the left door switch breakout

Harness Routing Views in Wiring Systems

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S600

In the right front door trim harness, approximately 61 cm (24 in) from the C602 connector

Harness Routing Views in Wiring Systems

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S601

In the right front door trim harness, approximately 77.5 cm (30.5 in) from the C602 connector

Harness Routing Views in Wiring Systems

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S602

In the right front door trim harness, approximately 71.5 cm (28.1 in) from the C602 connector

Harness Routing Views in Wiring Systems

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