GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Below LH side of I/P, left of steering column

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Data Link Connector (DLC)

Below LH side of I/P, right of steering column

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Daytime Running Lamp (DRL) Control Module

Below LH side of I/P, left of steering column

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Lock Switch

In center of front door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Driver Seat Adjuster Switch

LH side of driver's seat

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Fuse Block

RH side of I/P, in RF door opening

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Headlamp Switch

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

Lighting Systems Component Views in Lighting Systems

--

Ignition Switch

Mounted in I/P, RH side of instrument cluster

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Below carpet, under RH front seat

SIR Component Views in SIR

SIR Connector End Views in SIR

Park Brake Indicator Switch

Below LH side of I/P, part of park brake assembly

--

--

Powertrain Control Module (PCM)

Front LH side of engine, inside air cleaner assembly

Engine Controls Component Views in Engine Controls -3.8 L

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

Seat Belt Switch

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

Power Seat Component Views in Seats

--

Splice Pack SP205

Below I/P, taped in harness, on RH side of steering column

--

Data Link Communications Connector End Views in Wiring Systems

Underhood Accessory Wiring Junction Block

RH side of engine compartment, mounted to strut tower

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C101

I/P wiring harness to engine wiring harness, LH side of engine compartment, near strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

I/P wiring harness to body wiring harness, behind RH side of I/P

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C201

I/P wiring harness to headlamp and turn signal switch connector, behind I/P, on RH side of steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

Body wiring harness to LF door wiring harness, in 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 driver's seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G203

Below I/P, RH side of steering column

Harness Routing Views in Wiring Systems

--

G301

Inside LH door sill, forward of LH front seat

Harness Routing Views in Wiring Systems

--

P100

Lower RH side of dash panel

Harness Routing Views in Wiring Systems

--

P101

Upper LH side of dash panel

Harness Routing Views in Wiring Systems

--

P500

LH A-pillar

--

--

S211

I/P wiring harness, behind instrument cluster, approximately 8 cm (3 in) from instrument cluster breakout

--

--

S226

I/P wiring harness, RH side of I/P, approximately 4 cm (2 in) from fuse block breakout

--

--

S234

I/P wiring harness, LH side of I/P, between hazard warning switch breakout and data link breakout, approximately 8 cm (3 in) left of Data Link Connector (DLC) breakout

--

--

S270

I/P wiring harness, LH side of I/P, between hazard warning switch breakout and Data Link Connector (DLC) breakout, approximately 7 cm (3 in) from DLC breakout

--

--

S303

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

--

--

S322

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

--

--

S330

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

--

--

S504

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

--

--