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Home >> GMC >> 2006 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 784 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Transmission Extension Housing Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Transmission Case Extension
    GM747478Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW O-ring seal (2) to the case extension.
  2. Install the case extension (1).
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the case extension bolts (3).

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

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