GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

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

Body Control System Component Views

Body Control System Connector End Views

Data Link Connector (DLC)

Below the left side of the IP, right of the steering column

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Door Lock (Ajar Indicator Switch)

Rear of the door panel

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Lock (Actuator Motor)

Rear of the door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Switch

In the center of the front door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Driver Seat Adjuster Switch

Left side of the driver's seat (w/ RPO AG1 only)

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Electronic Brake Control Module (EBCM)

Rear left side of engine compartment, mounted on the hydraulic modulator

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Electronic Traction Control Switch

Center console, behind the automatic transmission control lever handle

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Fog Lamp

Front lower side of the vehicle (if equipped)

Lighting Systems Component Views in Lighting Systems

--

Fog Lamp Switch

On the IP, left side of the steering column (if equipped)

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fuse Block

Right side of the IP, in the right front door opening

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Headlamp Switch

Part of the headlamp and turn signal switch, on the turn signal lever

Lighting Systems Component Views in Lighting Systems

--

IP Compartment Lamp

Right side of the compartment opening

Lighting Systems Component Views in Lighting Systems

--

IP Courtesy Lamp (Left)

Below the left side of the IP, in the footwell

--

--

IP Courtesy Lamp (Right)

Below the right side of the IP, in the footwell

--

--

IP Lamp Dimmer Switch

On the IP, left side of the steering column

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Ignition Switch

Mounted in the IP, right side of the instrument cluster

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Ignition Switch Illumination Bulb

Mounted in the ignition switch, right side of the instrument cluster

--

--

Inflatable Restraint Control Module (SDM)

Below the carpet, under the right front seat

SIR Component Views in SIR

SIR Connector End Views in SIR

Inside Rear View Mirror

Top center of the windshield

--

Stationary Windows Connector End Views in Stationary Windows

Instrument Cluster

Top of the IP, above the steering column

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

Park Brake Indicator Switch

Below the left side of the IP, part of the park brake assembly

--

--

PASSLOCK Sensor

Part of the ignition switch key cylinder, in the IP, below the right side of the instrument cluster

Theft Deterrent System Component Views in Theft Deterrent

Theft Deterrent System Connector End Views in Theft Deterrent

Powertrain Control Module (PCM)

Front left side of the engine, inside the air cleaner assembly

Engine Controls Component Views in Engine Controls - 3.5L

Powertrain Control Module Connector End Views in Engine Controls - 3.5L

Rear Compartment Courtesy Lamp

In the rear compartment, below the center of the rear window trim panel

--

--

Rear Compartment Lid Ajar Indicator Switch

Part of the rear compartment lid lock, mounted to the rear compartment lid

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Remote Control Door Lock Receiver (RCDLR)

Left side of the IP, above the right side of the instrument cluster

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

Roof Rail Courtesy/Reading Lamp

Mounted to the side of the headliner, above the rear door window

--

--

Seat Belt Switch

Part of the driver seat belt (retractor side), right side of the driver's seat

Power Seat Component Views in Seats

--

Splice Pack SP205

Below the IP, taped in the IP harness at the DLC breakout, on the right side of the steering column

--

Data Link Communications Connector End Views in Data Link Communications

Sunshade Mirror Lamp

Mounted in the sunshade, on the side of the windshield header

--

--

Underhood Accessory Wiring Junction Block

Right side of the engine compartment, mounted to the strut tower

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C101

IP wiring harness to engine wiring harness, left side of the engine compartment, near the strut tower

--

Inline Harness Connector End Views in Wiring Systems

C183

IP wiring harness to engine wiring harness, left side of the engine compartment, near the strut tower (w/ RPO LX5 Only)

--

Inline Harness Connector End Views in Wiring Systems

C200

IP wiring harness to body wiring harness, behind the right side of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

IP wiring harness to headlamp and turn signal switch connector, behind the IP, on the right side of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

Body wiring harness to left front door wiring harness, in the A-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C302

Body wiring harness to right front door wiring harness, in the A-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C303

Body wiring harness to left front door wiring harness, in the A-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C304

Body wiring harness to right front door wiring harness, in the A-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C311

Body wiring harness to driver seat adjuster wiring harness, below the driver's seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C351

Body wiring harness to left rear door wiring harness, in the B-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C352

Body wiring harness to right rear door wiring harness, in the B-pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C390

Body wiring harness to quarter courtesy and reading lamp wiring harness, behind the lower right C-pillar trim panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C410

Body wiring harness to rear compartment lid wiring harness, below the center of the rear window panel, near the rear compartment courtesy lamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G101

Left side of the front end upper tie bar

Harness Routing Views in Wiring Systems

--

G102

Right side of the front end upper tie bar

Harness Routing Views in Wiring Systems

--

G200

Behind the right side of the IP compartment

Harness Routing Views in Wiring Systems

--

G201

Below the IP, left side of the steering column

Harness Routing Views in Wiring Systems

--

G203

Below the IP, right side of the steering column

Harness Routing Views in Wiring Systems

--

G301

Inside the left door sill, forward of the left front seat

Harness Routing Views in Wiring Systems

--

G302

Inside the right door sill, forward of the right front seat

Harness Routing Views in Wiring Systems

--

P100

Lower right side of the dash panel

Harness Routing Views in Wiring Systems

--

P101

Upper left side of the dash panel

Harness Routing Views in Wiring Systems

--

P500

Left A-pillar

--

--

P600

Right A-pillar

--

--

P700

Left B-pillar

Harness Routing Views in Wiring Systems

--

P800

Right B-pillar

Harness Routing Views in Wiring Systems

--

S123

Cross body front wiring harness, below the windshield washer solvent, approximately 19 cm (7 in) from the windshield washer pump breakout

--

--

S124

Cross body front wiring harness, behind the left headlamp, approximately 7 cm (3 in) from the left headlamp connector breakout (w/ fog lights only)

--

--

S211

IP wiring harness, behind the instrument cluster, approximately 8 cm (3 in) from the instrument cluster breakout

--

--

S214

IP wiring harness, behind the instrument cluster, approximately 4 cm (2 in) from the instrument cluster breakout

--

--

S226

IP wiring harness, right side of the IP, approximately 4 cm (2 in) from the fuse block breakout

--

--

S230

IP wiring harness, center of the IP, approximately 4 cm (2 in) from the radio breakout

--

--

S234

IP wiring harness, left side of the IP, between the hazard warning switch breakout and the data link connector (DLC) breakout, approximately 8 cm (3 in) left of the DLC breakout

--

--

S242

IP wiring harness, lower IP, below the radio, approximately 6 cm (2 in) from the IP compartment lamp breakout

--

--

S269

IP wiring harness, near the blower motor, approximately 7 cm (3 in) from the door lock relay

--

--

S270

IP wiring harness, left side of the IP, between the hazard warning switch breakout and the data link breakout, approximately 7 cm (3 in) from the data link connector (DLC) breakout

--

--

S283

IP wiring harness, behind the instrument cluster, approximately 5 cm (2 in) from the instrument cluster breakout

--

--

S303

Body wiring harness, below the driver's seat, approximately 10 cm (4 in) from the C311 (driver seat connector) breakout

--

--

S314

Body wiring harness, right side of the body, forward of the base of the B-pillar, approximately 4 cm (2 in) to rear of the G302 breakout

--

--

S315

Body wiring harness, center of the floor, behind the front seats, approximately 46 cm (18 in) from the C311 (driver seat connector) breakout

--

--

S322

Body wiring harness, below the right front seat, approximately 90 cm (35 in) from the C311 (driver seat connector) breakout

--

--

S330

Driver seat wiring harness, below the driver's seat, approximately 26 cm (10 in) from C311

--

--

S383

Quarter courtesy and reading lamp wiring harness, left side of the windshield header, approximately 24 cm (8 in) from the left sunshade mirror

--

--

S384

Quarter courtesy and reading lamp wiring harness, left side of the windshield header, approximately 25 cm (10 in) from the left sunshade mirror

--

--

S385

Quarter courtesy reading lamp wiring harness, in the headliner, above the right front door window, approximately 5 cm (2 in) from the right sunshade mirror breakout

--

--

S386

Quarter courtesy reading lamp wiring harness, in the headliner, above the right rear door window, approximately 4 cm (2 in) from the right rear roof rail courtesy reading lamp

--

--

S387

Quarter courtesy reading lamp wiring harness, in the headliner, above the right rear door window, approximately 6 cm (2 in) from the left rear roof rail courtesy reading lamp breakout

--

--

S388

Quarter courtesy and reading lamp wiring harness, in the headliner, above the right front door window, approximately 11 cm (4 in) from the right sunshade mirror breakout

--

--

S406

Body wiring harness, right side of the rear compartment, approximately 34 cm (13 in) from the antenna coaxial breakout

--

--

S414

Body wiring harness, right side of the rear compartment, approximately 4 cm (2 in) from the right rear radio speaker breakout, between S413 and S418

--

--

S430

Rear compartment wiring harness, center of the rear compartment lid, approximately 65 cm (26 in) from the license plate lamp breakout

--

--

S504

Left front door wiring harness, inside the door, approximately 4 cm (2 in) from the window switch breakout

--

--

S604

Right front door wiring harness, inside the door, approximately 4 cm (2 in) from the window switch breakout

--

--