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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - Off Vehicle >> Transmission Fluid Filler Tube Plug and Transmission Case Locating Pin Replacement >> Transmission Case Fill Plug Replacement

Transmission Case Fill Plug Replacement

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Transmission Fill Tube Seal & Plug
    GM1216971Courtesy of GENERAL MOTORS CORP.
  1. Remove the fill tube plug (1).
  2. Remove the fill tube seal (2).
  3. Install the fill tube seal (2) into the transmission case.
  4. Align the tab on the fill plug (1) with the tang on the transmission case.
    NOTE: The fill plug retaining tab snaps into place over a tang on the transmission case.
  5. Install the fill plug (1) into the fill tube seal (2).
  6. Press the fill plug down until the retaining tab locks into place.