GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 38205  Size: SH
  1. Disconnect the battery negative cable assembly from the battery negative terminal. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Raise the vehicle. Support the vehicle with safety stands. Refer to General Vehicle Lifting and Jacking in General Information.
  3. Remove the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid/Filter Changing .
  4. Remove the wiring harness (if needed).

  5. Object Number: 102558  Size: SH
  6. Remove the valve bore plug retainer ring.
  7. Remove the following parts: Refer to
    Object Number: 102560  Size: MF
    (206)Pump Cover
    (211)Coiled Spring Pin
    (211)Coiled Spring Pin
    (221)Snap Ring
    (223)TCC Valve
    (224)TCC Valve Spring
    (225)TCC Valve Bore Plug
    (226)Reverse Boost Valve Bushing Retainer Ring
    (227)Reverse Boost Valve Bushing
    (228)Reverse Boost Valve
    (229)Pressure Regulator Spring Retainer
    (230)Pressure Regulator Spring
    (231)Pressure Regulator Valve
    (232)Valve Bore Plug
    (232)Valve Bore Plug
    (238)Isolator Pressure Regulator Spring
  8. 6.1. The valve bore plug
    6.2. The TCC valve
    6.3. The TCC valve spring

Installation Procedure

  1. Install the following parts: Refer to
    Object Number: 102560  Size: MF
    (206)Pump Cover
    (211)Coiled Spring Pin
    (211)Coiled Spring Pin
    (221)Snap Ring
    (223)TCC Valve
    (224)TCC Valve Spring
    (225)TCC Valve Bore Plug
    (226)Reverse Boost Valve Bushing Retainer Ring
    (227)Reverse Boost Valve Bushing
    (228)Reverse Boost Valve
    (229)Pressure Regulator Spring Retainer
    (230)Pressure Regulator Spring
    (231)Pressure Regulator Valve
    (232)Valve Bore Plug
    (232)Valve Bore Plug
    (238)Isolator Pressure Regulator Spring
  2. 1.1. The TCC valve spring
    1.2. The TCC valve
    1.3. The valve bore plug

    Object Number: 102558  Size: SH
  3. Install the valve bore plug retainer ring.
  4. Install the wiring harness, if removed.
  5. Install the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid/Filter Changing .
  6. Remove the safety stands.
  7. Lower the vehicle.

  8. Object Number: 38205  Size: SH
  9. Connect the battery negative cable assembly to the battery negative terminal.
  10. Tighten
    Tighten the terminal bolt to 15 N·m (11 lb ft).

    Notice: 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.