G6 2005-2007

Proportioning Valve

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Removal & Installation



  1. Disconnect the 2 brake pipes from the proportioning valve. Use bleeder valve caps or similar caps to plug the ends of the brake pipes in order to prevent brake fluid from draining out of the pipes and to avoid brake fluid contamination.
  2.  
  3. Disconnect the 4 brake pipes from the proportioning valve. Use bleeder valve caps or similar caps to plug the ends of the brake pipes in order to prevent brake fluid from draining out of the pipes and to avoid brake fluid contamination.

    Click image to see an enlarged view

    Fig. Proportioning valve and pipes shown (1)

  4.  
  5. Remove the 2 proportioning valve bracket nuts and remove the proportioning valve assembly from the vehicle
  6.  

To install:


NOTE
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems

  1. Install the proportioning valve assembly and the 2 proportioning valve bracket nuts.
  2.  
  3. Tighten the 2 proportioning valve bracket nuts to 89 inch. lbs. (10 Nm).
    CAUTION
    Make sure brake pipes are correctly connected to brake pressure modulator valve. If brake pipes are switched by mistake, wheel lockup will occur and personal injury may result. The only two ways this condition can be detected are by using a Scan Tool or by doing an Antilock stop.

  4.  
  5. Remove the tape that marked the locations of the brake pipes.
  6.  
  7. Remove the caps from the 4 brake pipes and install the 4 brake pipes to the proportioning valve.
  8.  
  9. Tighten the brake pipe fittings to 15 ft. lbs. (20 Nm).
  10.  
  11. Remove the caps from the 2 brake pipes and install the 2 brake pipes to the proportioning valve.
  12.  
  13. Tighten the brake pipe fittings to 15 ft. lbs. (20 Nm).
  14.  
  15. Bleed the brake system.
  16.  

 
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