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 Component Views in Automatic Level Control

ALC Connector End Views in Automatic Level Control

Battery

LH front of the engine compartment

--

--

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

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

Electronic Traction Control Switch

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

Antilock Brakes System Connector End 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

Antilock Brakes System Connector End Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Front Wheel Speed Sensor (LH)

Attached to the LH steering knuckle

Antilock Brakes System Component Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Front Wheel Speed Sensor (RH)

Attached to the RH steering knuckle

Antilock Brakes System Component Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Fuse Block

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

Gauge Cluster

LH side of the I/P, just to the left and above the heater and A/C control

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

Heater and A/C Control

Center of the I/P, above the radio

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

HVAC Connector End Views in HVAC Systems

Instrument Cluster

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

--

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

Power Distribution Fuse Block

LH front of the engine compartment, attached to the ECM housing, above the battery

Power and Grounding Component Views in Wiring Systems

--

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

Rear Wheel Speed Sensor (LH)

Mounted inboard on the LH side of the rear axle differential

Antilock Brakes System Component Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Rear Wheel Speed Sensor (RH)

Mounted inboard on the RH side of the rear axle differential

Antilock Brakes System Component Views in Antilock Brakes

Antilock Brakes System Connector End Views in Antilock Brakes

Stop Lamp Switch

Attached to the brake pedal

--

Lighting Systems Connector End Views in Lighting Systems

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

Behind RH side of the I/P

--

--

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

G103

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

--

--

P101

Approximately 31 cm (13 in) from the RH front wheel speed sensor

--

--

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 engine compartment

--

--

P107

Approximately 34 cm (14 in) from the LH front wheel speed sensor

--

--

P108

In the 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 seats

--

--

P400

Approximately 30 cm (12 in) from the RH rear wheel speed sensor

--

--

S105

Body wiring harness, approximately 83 cm (33 in) from P103, near P107

--

--

S107

Body wiring harness, at the electronic brake/traction control module connector C2 branch break off

--

--

S206

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

--

--

S213

I/P wiring harness, near the data link connector (DLC) branch break off

--

--

S222

I/P wiring harness, near the G201 branch break off

--

--

S228

I/P Wiring harness. near the G200 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

--

--

S250

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

--

--

S251

I/P wiring harness, near the G201 branch breakoff

--

--

S252

I/P wiring harness, near the G201 branch breakoff

--

--

S265

Body wiring harness, near the G200 branch break off

--

--

S267

Body wiring harness, near the G200 branch break off

--

--

S268

Body wiring harness, near the G200 branch break off

--

--