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Installation Procedure

    Fig 1: View Of Reverse Boost Valve, Pressure Regulator Valve & Components
    GM298157Courtesy of GENERAL MOTORS CORP.
  1. Install the pressure regulator valve (1).
  2. Install the pressure regulator isolator spring (3) and the pressure regulator valve spring (2).
  3. Install the reverse boost valve (4) in the reverse boost valve sleeve (5).
  4. Install the reverse boost valve (4) and sleeve (5) in the oil pump cover.
    5. Fig 2: Locating Reverse Boost Valve
    GM687542Courtesy of GENERAL MOTORS CORP.
  5. Compress the reverse boost valve sleeve into the bore of the oil pump to expose the retaining ring slot.
  6. Install the reverse boost valve retaining ring, then slowly release tension on the reverse boost valve sleeve.
  7. Install the transmission oil filter and pan. Refer to Automatic Transmission Fluid/Filter Replacement .
  8. Lower the vehicle.
  9. Fill the transmission to the proper level with DEXRON® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
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