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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Transfer Case - NVG 149-NP3 - Service & Troubleshooting) >> Repair Instructions >> Transfer Case Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement .
    Fig 1: Identifying Transmission/Transfer Case Components
    GM826962Courtesy of GENERAL MOTORS CORP.
  2. Remove the front propeller shaft. Refer to Propeller Shaft Replacement - Front .
  3. Remove the rear propeller shaft. Refer to Propeller Shaft Replacement - One Piece .
  4. Drain the transfer case fluid.
  5. Remove the transmission vent hose clip from the bracket.
  6. Remove the transmission selector cable from the bracket.
  7. Disconnect the speed sensor electrical connector (4).
  8. Remove the speed sensor wire clip (3) from the bracket.
  9. Reposition the speed sensor wire.
  10. Remove the engine harness clips (5, 6) from the bracket.
  11. Remove the fuel pipe clip from the bracket.
  12. Support the transmission with a suitable jack stand.
  13. Install a suitable transmission jack under the transfer case.
  14. Remove the transmission mount nuts.
    Fig 2: Identifying Transmission Mount Nuts
    GM647997Courtesy of GENERAL MOTORS CORP.
  15. Raise the transfer case slightly.
  16. Remove the transmission mount bolts (1), at the transfer case.
    Fig 3: Locating Transmission Mount Bolts
    GM702771Courtesy of GENERAL MOTORS CORP.
  17. Remove the transmission mount.
    Fig 4: View Of Transmission Mount
    GM648001Courtesy of GENERAL MOTORS CORP.
  18. Remove the crossmember bolts.
    Fig 5: Identifying Crossmember & Bolts
    GM652595Courtesy of GENERAL MOTORS CORP.
  19. Remove the crossmember.
  20. Remove the transfer case adapter nuts.
  21. Remove the fuel pipe bracket from the studs.
    IMPORTANT: Pull straight back on the transfer case in order to position the transfer case so that it can be rotated parallel to the transmission.
  22. Remove the transfer case.
    Fig 6: View Of Transfer Case & Transmission
    GM828574Courtesy of GENERAL MOTORS CORP.
  23. Rotate the transfer case so that it is perpendicular to the torsion bar mounting bracket.
  24. Lower the transmission jack.
  25. Remove the gasket from the transfer case.
  26. Remove the transfer case from the transmission jack.
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