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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1035 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> On-Vehicle Repair Information >> Transmission Fluid Filler Tube and Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Fill Tube Nuts
    GM702779Courtesy of GENERAL MOTORS CORP.
  1. The transmission case has provisions that enable the fill tube to be installed on either the right or left side of the transmission. Proceed to step 9 if servicing the plug and/or seal opposite the fill tube.
  2. If the vehicle is equipped with a diesel engine, the transmission must be removed to service the fill tube and/or seal. Refer to Transmission Replacement .
  3. Remove the transmission fluid level indicator.
  4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the heat shield. Refer to Transmission Heat Shield Replacement .
  6. Remove the fill tube nuts.
  7. Place a drain pan under the transmission to catch any dripping fluid.
  8. Loosen the fill tube from the transmission.
  9. Remove the fill tube and seal from the vehicle.
    10. Fig 2: Fill Tube Plug & Seal
    GM658984Courtesy of GENERAL MOTORS CORP.
  10. Remove the fill tube plug (1).
  11. Remove the fill tube plug seal (2).
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