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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Repair Instructions >> Front Wheel Speed Sensor Wiring Harness Replacement >> Removal Procedure

Removal Procedure

    Fig 1: View Of EBCM Connector
    GM1290260Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Disconnect connector from the electronic brake control module (EBCM).
  3. Remove the appropriate terminals from connector:
    • Right-side - terminals 4, WH, and 5, GY
    • Left-side - terminals 6, BN, and 7, L-BU
    4. Fig 2: View Of Front Wheel Speed Sensor Electrical Connector
    GM1290261Courtesy of GENERAL MOTORS CORP.
  4. Both speed sensor harnesses break out of the antilock brake system (ABS) wiring harness just beyond the ABS connector. The right-side speed sensor harness crosses the top of the fire wall to the right-side fender area. The left-side speed sensor harness goes directly to the left-side fender area.
  5. Free the speed sensor harness from the wiring harness.
  6. Remove the front wheel speed sensor electrical connector from the retaining clamps and disconnect the harness from the sensor connector.
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