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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Automatic Transmission - 4L80-E - Service & Replacement) >> Repair Instructions >> Transmission Extension Housing Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 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).
  2. Install the case extension (1).
    NOTE: Refer to FASTENER NOTICE .
  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 .
  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   . 
    Fig 1: Installing Case Extension & Bolts
    G01952439Courtesy of GENERAL MOTORS CORP.
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