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Control Valve Body: Removal

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  1. Using the wiring harness connector remover, disconnect the external wiring harness from the main transmission connector. See Fig 1 .
  2. Remove the oil pan and suction filter. See INTERNAL FILTER  under LUBRICATION.
    NOTE: The transmission main connector is actually one end of the internal harness that protrudes through the main housing.
  3. Place a 1 3/16" (30 mm) or 12-point deep socket or box end (2) over the connector (1).
  4. Push inward on the socket or wrench to release the retainer "feet" that attach the connector (1) to the main housing. See Fig 2 .
  5. Remove the wrench. Push inward on the electrical connector to separate it from the main housing. This allows the internal wiring harness to remain with the control valve assembly as it is removed.
  6. Remove the 2 detent spring bolts (3). Remove the detent spring assembly (2). See Fig 3 .
    NOTE: As the control valve assembly is removed, be careful not to lose the manual selector valve pin or allow the manual selector valve to slide out of the control valve assembly.
  7. Remove 14 bolts at locations marked (1). See Fig 4 . Support the control valve assembly (about 10 pounds) and remove the last bolt marked (1).
  8. Lower the control valve assembly (1) to clear the dowel pins (2) in the main housing. See Fig 5 .
  9. Move the control valve assembly (4) sideways to disengage pin (1) in the manual selector valve (2) from the slot in detent lever (3). See Fig 6 . Remove the control valve assembly (4).
Fig 1: Disconnecting External Wiring Harness
G00096113Courtesy of GENERAL MOTORS CORP.
Fig 2: Releasing Retainer At Connector
G00096114Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing Detent Spring
G00096115Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing & Installing Control Valve Body Bolts
G00096116Courtesy of GENERAL MOTORS CORP.
Fig 5: Lowering Control Valve Body From Dowel Pins
G00096117Courtesy of GENERAL MOTORS CORP.
Fig 6: Moving Control Valve To Disengage & Engage Pin
G00096118Courtesy of GENERAL MOTORS CORP.
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