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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1007 (Automatic Transmission - 4L80-E/4L85-E (Introduction, Service & Replacement)) >> Repair Instructions >> Forward Servo Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  2. Remove the forward servo cover bolts, cover, and gasket.
    Fig 1: Forward Servo Assembly
    GM512978Courtesy of GENERAL MOTORS CORP.
  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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