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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1007 (Automatic Transmission - 4L80-E/4L85-E (Introduction, Service & Replacement)) >> Repair Instructions >> Transmission Extension Housing Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a new case extension O ring seal (2).
    Fig 1: Transmission Case Extension
    GM747478Courtesy of GENERAL MOTORS CORP.
  2. Install the case extension (1).
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the case extension bolts (3).

    Tighten:  Tighten the bolts (3) to 34 N.m (25 lb ft).

  4. Install the transmission support and 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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