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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> Transmission Extension Housing Rear Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Place a drain pan under the vehicle.
  3. Remove the propeller shaft. Refer to Propeller Shaft Replacement - One Piece or Propeller Shaft Replacement - Two Piece in Propeller Shaft.
  4. Remove the case extension housing rear oil seal. Use a flat bladed tool and carefully pry the seal from the housing.
    Fig 1: Removing Case Extension Housing Rear Oil Seal
    GM408509Courtesy of GENERAL MOTORS CORP.
  5. Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Transmission Extension Housing Assembly Replacement .
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