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Home >> Chevrolet >> 2004 >> Epica LS >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Modulator Assembly Replacement >> Removal Procedure

Removal Procedure

    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Remove the cooling surge tank. Refer to Surge Tank Replacement (2.0L) or Surge Tank Replacement (2.5L) in Engine Cooling.
    3. Fig 1: View Of ABS Wiring Harness Connector And EBCM Mounting Bolts
    GM1506464Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the ABS wiring harness connector (1) from the socket on the electronic brake control module (EBCM).
  4. Cover the connector and the socket with shop cloths to as protection from brake fluid.
    5. Fig 2: View Of Brake Pipe Fitting And Nut
    GM1506465Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not allow air from the master cylinder into the hydraulic unit or the brake pipes. If air gets into the hydraulic unit, perform a bleeding procedure using a scan tool programmed for the ABS system. As long as no air enters the hydraulic unit, a simple bleeding procedure is all the system will require.
  5. Remove the 6 brake pipe fitting nuts (1) from the hydraulic unit.
    6. Fig 3: View Of ABS Wiring Harness Connector And EBCM Mounting Bolts
    GM1506464Courtesy of GENERAL MOTORS CORP.
  6. Remove the mounting bracket bolts (2) from the brake modulator assembly.
  7. Remove the brake modulator assembly.
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