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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Repair Instructions >> Forward Servo Replacement >> Removal Procedure

Removal Procedure

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  1. Raise the vehicle.
  2. Remove the oil pan and filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  3. Remove the six forward servo cover bolts, cover, and gasket.
  4. Remove the following parts:
    1. Forward servo piston pin (5)
    2. O-ring seal (4)
    3. Servo piston (3)
    4. Retainer (2)
    5. Piston spring (1)
    Fig 1: Removing Forward Servo Piston & Components
    G02424534Courtesy of GENERAL MOTORS CORP.