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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Transmission >> Transfer Case - GETRAG 790 >> Repair Instructions - On Vehicle >> Transfer Case Assembly Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Transfer Case O-Ring Seal, Half Shaft Retainer & Intermediate Shaft Seals
    GM2039432Courtesy of GENERAL MOTORS COMPANY
  1. Lubricate the O-rings (2, 3) with automatic transmission fluid.
  2. Install the NEW transfer case O-ring seal (3).
    3. Fig 2: Torque Converter Housing Differential Bore
    GM2039431Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Oxidation must be removed from the transmission torque converter housing bore before installation of the transfer case. A clean bore will prevent oxidation build up from scuffing or cutting the O-ring seal upon transfer case installation, resulting in a leak.

  3. Carefully insert a clean soft cloth into the transmission torque converter housing differential bore to prevent debris from entering the transmission.
  4. Clean the oxidation from the transmission torque converter housing differential bore surface using steel wool or crocus cloth.
  5. Carefully remove any debris and the cloth from the transmission torque converter housing differential bore.
    6. Fig 3: Guide Pins
    GM2039433Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Use guide pins to aid in alignment and installation of the transfer case to the transmission. Failure to use guide pins may result in cutting the transfer case O-ring seal during installation of the transfer case causing a fluid leak.

  6. Fabricate 2 guide pins by cutting the heads off of 2 bolts M12x1.75x75. chamfer and remove burrs from the cut end of the bolt.
  7. Hand thread the guide pins (1) into the transmission upper and lower transfer case mounting bolt holes.
    8. NOTE:

    Transmission fluid may creep from the transmission bore during installation.

  8. Thoroughly clean the transmission bore and ribbing of fluid and debris immediately prior to installing the transfer case.
    9. Fig 4: Transfer Case & Transmission
    GM2039434Courtesy of GENERAL MOTORS COMPANY
  9. Install the transfer case (1) to the transmission.
  10. Remove the guide pins (2).
    11. Fig 5: Transfer Case & Bolts
    GM2039435Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  11. Install the transfer case to transmission bolts (1) and tighten to 50 N.m (37 lb ft).
  12. Install the engine rear mount bracket. Refer to Engine Rear Mount Bracket Replacement (Front Wheel Drive)Engine Rear Mount Bracket Replacement (All Wheel Drive) .
  13. Remove the jackstand from under the transaxle.
  14. Install the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement .
  15. Install the right wheel drive shaft. Refer to Front Wheel Drive Shaft Replacement .
  16. Install the propeller shaft. Refer to Propeller Shaft Replacement .
  17. Fill the transfer case with fluid. Refer to Transfer Case Fluid Replacement .
  18. Fill the transmission fluid. Refer to Transmission Fluid Drain and Fill .
  19. Lower the vehicle.
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