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Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
  2. Remove the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement   . 
    CAUTION: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
  3. Remove the reverse boost valve bushing retainer ring (2).
    Fig 1: Removing Reverse Boost Valve Bushing Retainer Ring
    G01952375Courtesy of GENERAL MOTORS CORP.
  4. Remove the following from the reverse boost valve cylinder:
    • The reverse boost valve bushing
    • The reverse boost valve
    • The pressure regulator spring retainer
    • The pressure regulator spring
    • The pressure regulator valve
    • The reverse boost valve bushing
      Fig 2: Removing Reverse Boost Valve Cylinder Components
      G01952376Courtesy of GENERAL MOTORS CORP.
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