GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Level Control Sensor

Attached to the RH side of the rear differential

ALC Suspension Component Views in Automatic Level Control

ALC Suspension Connector End Views in Automatic Level Control

Body Control Module (BCM)

Mounted on the RH A-pillar, behind the trim panel

BCM Component Views in Body Control System

BCM Connector End Views in Body Control System

Cellular Telephone

Center console

--

Cellular Communication Connector End Views in Cellular Communication

Cruise Control Module

RH rear of the engine compartment, attached to the lower rail

--

Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

Attached to the I/P carrier, to the left of the steering column

--

Power and Grounding Connector End Views in Wiring Systems

Driver Seat Adjuster Memory Module

Attached to the underside of the driver's seat

Power Seat Systems Component Views in Seats

Power Seat Systems Connector End Views in Seats

Electronic Brake/Traction Control Module (EBTCM)

LH front of the engine compartment, mounted to the lower rail

Antilock Brakes System Component Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Engine Control Module (ECM)

LH front of the engine compartment, in the ECM housing, at position 1

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fuse Block

Mounted to the I/P, lower LH side of the steering column

--

--

Heater and A/C Control

Center of the I/P, above the radio

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

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

Inflatable Restraint Sensing and Diagnostic and Seat Belt Pretensioner Module

Under the center console, near the parking brake lever

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

SIR Connector End Views in SIR

Instrument Cluster

LH side of the I/P, above the steering column

--

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

Power Steering Control Module

Underneath the LH side of the I/P

Power and Grounding Component Views in Wiring Systems

Steering Controls Connector End Views in Variable Effort Steering

Radio, AM/FM Stereo and Clock and Tape Player and Compact Disc Player

Center of the I/P, below the heater and A/C control

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

Entertainment Connector End Views in Entertainment

Remote Control Door Lock Receiver

In the rear compartment, on the LH side

--

Keyless Entry Connector End Views in Keyless Entry

Sound Processor Interface

In the rear compartment, in the tray that is attached to the rear deck

--

Entertainment Connector End Views in Entertainment

Sun Roof Actuator

Front center of the roof, above the inside rear view mirror

Power Roof Systems Component Views in Roof

Power Roof Systems Connector End Views in Roof

Theft Deterrent Module

Mounted to the ignition switch on the upper RH side of the steering column

--

Theft Deterrent Connector End Views in Theft Deterrent

Transmission Control Module (TCM)

Behind the RH side of the I/P

--

AT Inline Harness Connector End Views in Automatic Transmission

C105 (white connector)

I/P wiring harness to ECM wiring harness, at the LH front of the engine compartment, just behind the battery

Wiper/Washer System Component Views in Wiper/Washer System

Inline Harness Connector End Views in Wiring Systems

C200A

I/P wiring harness to body wiring harness, at lower LH A-pillar

Power and Grounding Component Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C200B

I/P wiring harness to body wiring harness, at lower LH A-pillar

Power and Grounding Component Views in Wiring systems

Inline Harness Connector End Views in Wiring Systems

C210

I/P wiring harness to rear amplifier wiring harness, lower RH A-pillar, next to the BCM

BCM Component Views in Body Control System

Inline Harness Connector End Views in Wiring Systems

C310

Body wiring harness to driver seat adjuster memory module, underneath the driver's seat

Power Seat Systems Component Views in Seats

Inline Harness Connector End Views in Wiring Systems

G103

Body and I/P wiring harnesses, located at the LH front of the engine compartment, near C102, C105, and C106

Wiper/Washer System Component Views in Wiper/Washer System

--

P102

Lower RH corner of the engine compartment

--

--

P103

Lower LH A-pillar, forward of G200

Power and Grounding Component Views in Wiring systems

--

P106

RH rear of the engine compartment

--

--

P108

LH engine compartment, at the rear of the ECM housing

--

--

P110

Rear LH corner of the engine compartment

--

--

P302

In the passenger compartment, underneath rear seat

--

--

S203

Body wiring harness, approximately 3 cm (1 in) from the BCM connector C1 branch break off

--

--

S204

I/P wiring harness, near the multifunction relay K134 connector branch break off

--

--

S210

I/P wiring harness, near the multifunction relay K134 connector branch break off

--

--

S226

I/P wiring harness, near G201 branch break off

--

--

S229

I/P wiring harness, near the gauge cluster connector branch break off

--

--

S248

I/P wiring harness, near the gauge cluster connector branch break off

--

--