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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L80-E/4L85-E - Overhaul >> Repair Instructions >> Manual 2-1 Band Servo Assembly Disassemble

Manual 2-1 Band Servo Assembly Disassemble

  1. Remove the manual 2-1 band servo piston pin retainer ring (56).
    Fig 1: Manual 2-1 Band Servo Assembly Inspection Areas
    GM335068Courtesy of GENERAL MOTORS CORP.
  2. Remove the manual 2-1 band servo piston pin (55).
  3. Remove the manual 2-1 band servo piston seal (57).
  4. Inspect the manual 2-1 band servo piston (58) for porosity, wear and seal ring groove damage.
  5. Inspect the manual 2-1 band servo piston pin (55) and retainer ring (56) for wear and damage.
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