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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Automatic Transmission Servicing (4L80-E)) >> Removal & Installation >> Forward Servo >> Removal

Forward Servo: Removal

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  1. Raise and support the vehicle. Remove the oil pan and filter. See DRAINING & REFILLING  under LUBRICATION.
  2. Remove the 6 forward servo cover bolts, cover and gasket.
  3. Remove the following parts:
    • Forward servo piston pin (5). See Fig 1 .
    • "O" ring seal (4).
    • Servo piston (3).
    • Retainer (2).
    • Piston spring (1).
Fig 1: Removing/Installing Forward Servo Assembly
G00089921Courtesy of GENERAL MOTORS CORP.