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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - On Vehicle >> Forward Servo Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Forward Servo Assembly
    GM512978Courtesy of GENERAL MOTORS CORP.
  1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement .
  2. Remove the forward servo cover bolts, cover, and gasket.
  3. 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)
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