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Home >> Buick >> 2005 >> LeSabre Custom, 4T65E/MN3 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - Introduction & Repair Instructions >> Repair Instructions >> Reverse Servo Replacement >> Installation Procedure

Installation Procedure

    IMPORTANT: Follow this procedure exactly or the transaxle will have no reverse gear due to the servo pin missing the band.
  1. Jack up the driver side (channel plate side) of the car until it is higher than the differential side. This ensures that the reverse band is in the proper location and not cocked to the channel plate side of the case.
    2. Fig 1: Identifying Reverse Servo Assembly Components
    GM48173Courtesy of GENERAL MOTORS CORP.
  2. Install the servo spring (49).
  3. Install the servo assembly (42-48).
  4. Install the reverse servo cover (40) with new O-ring seal (41).
  5. Install the snap ring (39).
  6. Install the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right (L36) in Engine Exhaust.
  7. Install the exhaust crossover. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
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