Fig 1: Identifying Antilock Brake System Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Right Front Wheel Speed Sensor
2	Brake Master Cylinder
3	Master Cylinder Reservoir
4	Grommet
5	Right Front Wheel Speed Sensor Connector
6	Brake Fluid Level Switch Connector
7	Instrument Cluster
8	Connector C302
9	Right Rear Wheel Speed Sensor Connector
10	Right Rear Wheel Speed Sensor
11	Left Rear Wheel Speed Sensor
12	Left Rear Wheel Speed Sensor Connector
13	Body Wiring Harness
14	Connector C202
15	Connectors C110
16	EBCM Connector
17	Left Front Speed Sensor Connector
18	Grommet
19	Hydraulic Modulator with Attached EBCM
20	Connector C107
21	Left Front Wheel Speed Sensor

Fig 2: View Of Electronic Brake Control Module (EBCM) And Oil Feeding Connector

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Electronic Brake Control Module (EBCM)
2	Oil Feeding Connector

Fig 3: Locating Wheel Speed Sensors (WSS)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Wheel Speed Sensor (WSS) - Left Front Shown, Right Similar
2	Wheel Speed Sensor (WSS) - Left Rear Shown, Right Similar

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Antilock Brake System Component Views