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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> Transmission Extension Housing Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Install a new case extension O ring seal (3).
  2. Install the case extension (2).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
    Fig 1: View Of Case Extension, Bolts & O-Ring Seal
    GM656358Courtesy of GENERAL MOTORS CORP.
  3. Install the case extension bolts (1).

    Tighten:  Tighten the bolts (1) to 45 N.m (33 lb ft).

  4. Install the transmission mount. Refer to Transmission Mount Replacement .
  5. Install the propeller shaft. Refer to Propeller Shaft Replacement - One Piece or Propeller Shaft Replacement - Two Piece in Propeller Shaft.
  6. Remove the drain pan and the transmission jack.
  7. Lower the vehicle.
  8. Fill the transmission to the proper level with DEXRON® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
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