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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 >> Manual Shift Shaft Seal 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. Carefully slide a new selector shaft seal (1) over the selector shaft (2) with the wide face of the steel case facing outward. Position the seal so that it is starting to enter the seal bore.
  2. Using J 43909,  remove the inner sleeve so that the tool will slide over the selector shaft.
  3. Slide the J 43909  into position so that the end of the tool contacts the seal being installed. Use a mallet to strike the J 43909  and drive the new seal into the seal bore until it is seated at the bottom of the bore.
  4. Install the PNP switch. Refer to PARK/NEUTRAL POSITION SWITCH REPLACEMENT .
  5. Fill the transmission to the proper level with DEXRON® III transmission fluid. Refer to TRANSMISSION FLUID CHECKING PROCEDURE .
    Fig 1: Installing Main Shift Shaft Seal
    G01952418Courtesy of GENERAL MOTORS CORP.
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