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Home › Pontiac › 2001 › Aztek Base, AWD › Repair and Diagnosis › External Pages › Different car › Section 1533 (Hydraulic Brake System) › Repair Instructions › Proportioning Valve Replacement › Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Removing/Installing Transaxle Control Module (TCM)
    GM931336Courtesy of GENERAL MOTORS CORP.
  1. Without disconnecting the electrical connectors, remove the transmission control module (TCM) if equipped from the bracket and position aside on top of the engine. Refer to Transmission Control Module Replacement (2.2L (L61)) or Transmission Control Module Replacement (2.4L (LAT)) for the 4T45-E transaxle.
    2. Fig 2: View Of Brake Pipes At Proportioning Valve Assembly
    GM931398Courtesy of GENERAL MOTORS CORP.
  2. Place a shop towel under the proportioning valve assembly to catch any brake fluid loss.
    3. IMPORTANT: Prior to disconnecting the brake pipes from the proportioning valve assembly, note the locations of the brake pipes to the valve assembly, to aid during installation.
  3. Disconnect the caliper and wheel cylinder brake pipes from the proportioning valve assembly.
  4. Cap or plug the brake pipe ends to prevent brake fluid loss and contamination.
  5. Disconnect the master cylinder brake pipes from the proportioning valve assembly.
  6. Cap or plug the brake pipe ends to prevent brake fluid loss and contamination.
  7. If the proportioning valve is to be reused, plug the ports to prevent brake fluid loss and contamination.
    8. Fig 3: Removing/Installing Proportioning Valve Assembly
    GM926605Courtesy of GENERAL MOTORS CORP.
  8. Remove the proportioning valve mounting bolts.
    9. IMPORTANT: Do not exert excessive force on the brake pipes.
  9. Remove the proportioning valve from the vehicle while carefully repositioning the brake pipes.
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