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Reverse Servo (4L80-E): Installation

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the rear servo assembly into the transmission case as follows:
    • Accumulator spring (14).
    • Selective pin (13).
    • Servo spring retainer (12).
    • Servo spring (11).
    • Washer (10).
    • Piston seal (9).
    • Accumulator piston (8).
    • Inner ring oil seal (7).
    • Outer ring oil seal (1).
    • Servo piston (2).
    • Bottom retaining clip (3).
    • Cover gasket (4).
    • Cover (5).
    • Cover Bolt (6).
  2. Install the cover bolts and tighten to specification. See TORQUE SPECIFICATIONS  .
  3. Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION. Lower vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION  .
Fig 1: Removing & Installing Reverse Servo Assembly
G00089920Courtesy of GENERAL MOTORS CORP.
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