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Home >> Cadillac >> 2005 >> Escalade EXT >> Repair and Diagnosis >> Brakes >> Antilock Brake System, Traction Control System & Stability Control System >> Repair Instructions >> Brake Pressure Modulator Valve Pre-Charge Pump Replacement >> Removal Procedure
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Removal Procedure

CAUTION: Refer to Brake Fluid Irritant Caution in Cautions and Notices.
NOTE: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices.
    Fig 1: View Of Pre-Charge Pump, Inlet Hose & Outlet Pipe
    GM887578Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.

    Crimp the inlet hose (1) from the master cylinder to the Pre-Charge Pump (PCP) (2) to prevent fluid from leaking out and draining the master cylinder reservoir.

  2. IMPORTANT: The area around the pre-charge pump MUST be free from loose dirt to prevent contamination of disassembled ABS components.
  3. Remove the inlet hose clamp from the PCP assembly inlet port.
  4. Remove the inlet hose (1) from the PCP assembly inlet port.
  5. Loosen and remove the brake fluid outlet pipe (3). Cap or plug the brake pipe to prevent contamination and brake fluid lose.
  6. Fig 2: View Of PCP Assembly & Bolts
    GM828111Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the PCP electrical connector from the vehicle connector harness.
  8. Remove the PCP electrical connector from the mounting bracket.
  9. Remove the PCP mounting bracket front bolt (2) and mounting bracket side bolts (3).
  10. Remove the PCP assembly (1) from the vehicle.