GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

ABS Main Relay

In the center rear of the engine compartment, to the left of the windshield wiper motor

Antilock Brake System Component Views

Antilock Brake System Connector End Views

ABS Pump Relay

In the center rear of the engine compartment, to the left of the windshield wiper motor

Antilock Brake System Component Views

Antilock Brake System Connector End Views

ABS/TCC Switch (Buick)

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

Antilock Brake System Component Views

Antilock Brake System Connector End Views

ABS/TCC Switch (Oldsmobile)

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

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Brake Pressure Modulator Valve (BPMV)

In the left front of the engine compartment, near the base of the radiator support

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Electronic Brake (and Traction) Control Module (EBCM/EBTCM)

To the left rear of the engine compartment, on the left side strut tower

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Engine Compartment Fuse Block

In the right front of the engine compartment, near the A/C accumulator

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Hazard Flasher

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

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Instrument Cluster (Buick)

On the left side 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

IP Fuse Block

On the left front side of the passenger compartment, attached to the door hinge pillar

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

LH Front Wheel Speed Sensor

Behind the left front wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

LH Rear Wheel Speed Sensor

Behind the left rear wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Powertrain Control Module (PCM) (Buick)

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

Engine Controls Component Views in Engine Controls - 3.8L

Engine Controls Connector End Views in Engine Controls - 3.8L

Powertrain Control Module (PCM) (Oldsmobile)

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

Engine Controls Component Views in Engine Controls - 4.0L

Engine Controls Connector End Views in Engine Controls - 4.0L

Remote Indicator Bank (Oldsmobile)

On the left side of the IP, above the IC

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

RH Front Wheel Speed Sensor

Behind the right front wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

RH Rear Fuse Block

On the right rear side 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

RH Rear Wheel Speed Sensor

Behind the right rear wheel, on the back of the hub

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Stoplamp/BTSI Switch

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

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Traction Control Switch (Oldsmobile)

On the center of the center console, near the shifter assembly

Antilock Brake System Component Views

Antilock Brake System Connector End Views

Trip Odometer Reset Switch

On the left side of the IP, near 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

C102 (30 cavities)

Body harness to the body harness, on the center rear of the engine compartment

Harness Routing Views in Wiring Systems

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C103 (2 cavities)

Body harness to the right front wheel speed sensor harness, on the right rear side of the engine compartment

Harness Routing Views in Wiring Systems

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C104 (2 cavities)

Body harness to the left front wheel speed sensor harness, on the left rear side of the engine compartment

Harness Routing Views in Wiring Systems

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C200 (116 cavities)

body harness to the IP harness, under the left side of the IP

Harness Routing Views in Wiring Systems

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C203 (8 cavities) (Buick)

IP harness to the console harness, under the center console

Harness Routing Views in Wiring Systems

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C203 (16 cavities) (Oldsmobile)

IP harness to the console harness, under the center console

Harness Routing Views in Wiring Systems

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C401 (8 cavities)

Body harness to the rear wheel speed sensor harness, under the center rear of the vehicle

Harness Routing Views in Wiring Systems

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G104

On the left side of the engine compartment, on the lower rail, near the strut tower

Harness Routing Views in Wiring Systems

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G106

On the left side of the engine compartment, on the lower rail, near the EBTCM

Harness Routing Views in Wiring Systems

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G202

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

Harness Routing Views in Wiring Systems

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P100

On the left rear side of the engine compartment, near the base of the strut tower

Harness Routing Views in Wiring Systems

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P402

On the left rear side of the vehicle, near the tail lamp assembly

Harness Routing Views in Wiring Systems

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S101

In the body harness, approximately 36 cm (14.2 in) from the DRL resistor

Harness Routing Views in Wiring Systems

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S102

In the body harness, approximately 17.5 cm (6.8 in) from the brake fluid level sensor

Harness Routing Views in Wiring Systems

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S109

In the body harness, approximately 18.5 cm (7.2 in) from the EBTCM

Harness Routing Views in Wiring Systems

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S112

In the body harness, approximately 34 cm (13.3 in) from the EBTCM

Harness Routing Views in Wiring Systems

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S132

In the body harness, approximately 10 cm (3.9 in) from the park/neutral position switch breakout

Harness Routing Views in Wiring Systems

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S150

In the body harness, approximately 15 cm (5.9 in) from the EBTCM

Harness Routing Views in Wiring Systems

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S151

In the body harness, approximately 12 cm (4.7 in) from the park/neutral position switch breakout

Harness Routing Views in Wiring Systems

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S204

In the IP harness, approximately 23.5 cm (9.2 in) from the C200 connector

Harness Routing Views in Wiring Systems

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S217

In the body harness, approximately 41.5 cm (16.3 in) from P100

Harness Routing Views in Wiring Systems

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S258

In the body harness, approximately 35 cm (13.8 in) from the park brake switch

Harness Routing Views in Wiring Systems

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S263

In the body harness, approximately 31 cm (12.2 in) from the park brake switch

Harness Routing Views in Wiring Systems

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S264

In the IP harness, approximately 56.5 cm (22.2 in) from the radio

Harness Routing Views in Wiring Systems

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S290

In the body harness, approximately 73 cm (28.7 in) from P100

Harness Routing Views in Wiring Systems

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S298

In the body harness, approximately 82.5 cm (32.4 in) from P100

Harness Routing Views in Wiring Systems

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S316

In the console harness, approximately 38 cm (14.9 in) from the C203 connector

Harness Routing Views in Wiring Systems

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