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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 663 (Transfer Case - NVG 246-NP8 (2-Speed Automatic)) >> Repair Instructions >> Transfer Case Motor/Encoder Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Important:  If the motor/encoder assembly is being replaced because it is defective, make sure that the transfer case is in the neutral position. Manually shift the unit at the shift shaft. Use a crescent wrench if necessary.

Important:  When installing the motor/encoder unit to the transfer case, make sure that the transfer case is indexed properly and it is flat against the transfer case before tightening the mounting bolts.

  1. Install the NEW motor/encoder gasket to the transfer case.
  2. Install the motor/encoder to the transfer case.
  3. Install motor/encoder mounting bolts. Tighten the bolts, in the sequence shown, to 20 N.m (15 lb ft).
  4. Install the motor/encoder electrical connector. Ensure that the retention clips activate.
  5. Install the front propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - FRONT .
  6. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
  7. Lower the vehicle.
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