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Home >> Cadillac >> 2003 >> DeVille Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - 4T80-E >> Repair Instructions >> Lower Valve Assembly Replacement >> Installation Procedure

Installation Procedure

  1. For reassembly of the lower control valve body assembly. Refer to LOWER VALVE ASSEMBLY in Automatic Transaxle - 4T80-E Unit Repair Manual.
  2. Install the lower valve assembly (consisting of the channel plate, control valve body, accumulator assembly, and the wire harness extension) to the transaxle case as a single unit.
  3. Place the Lower valve assembly over the forward support studs.
  4. Hand start the bolts and nuts to the lower valve assembly.
    Fig 1: Installing Lower Valve Assembly To Transaxle Case As Single Unit
    G02099030Courtesy of GENERAL MOTORS CORP.
  5. Install the oil transfer plate.
  6. Position the wire harness extension retaining clip over the appropriate bolt hole in the oil transfer plate.
    NOTE: Refer to FASTENER NOTICE
  7. Hand start the bolts to the oil transfer plate.

    Tighten 

    Tighten the Lower valve assembly and the oil transfer plate bolts and nuts to 11 N.m (97 lb in).

    Fig 2: Installing Oil Transfer Plate
    G02099031Courtesy of GENERAL MOTORS CORP.

    Important:  Do not reuse retainer (2), it must be replaced.

  8. Insert the manual valve link (3) into the inside detent lever (1).

    Clip the manual valve link retainer (2) onto the manual valve link (3).

    Fig 3: Installing Manual Valve Link Into Inside Detent Lever
    G02099032Courtesy of GENERAL MOTORS CORP.
  9. Connect the wire harness extension to the wire harness assembly.
  10. Install the bottom pan and seal, the scavenger screens, and the lip seals. Refer to SCAVENGE SCREENS AND SEALS REPLACEMENT  .
    Fig 4: Connecting Wire Harness Extension To Wire Harness Assembly
    G02099033Courtesy of GENERAL MOTORS CORP.