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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Automatic Transmission - ALLISON - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Torque Converter Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of J 46409 & Torque Converter Lugs
    GM1660895Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the converter pump hub OD and the torque converter seal with clean transmission fluid.
  2. Install J 46409  180 degrees apart into 2 lugs on the front of the torque converter. See Special Tools .
  3. WARNING: Avoid personal injury or property damage when removing or installing the torque converter by seeking an assistant to help lift the torque converter.
  4. Lift the torque converter into the transmission.
  5. Spin the torque converter to engage the turbine shaft splines in the torque converter hub, the stator shaft splines in the stator race and to engage the drive flats on the converter pump hub with the oil pump drive gear.
  6. The torque converter is correctly installed when the distance from the lugs to the mounting face is the same as when measured before removing the torque converter.
  7. Fig 2: View Of Torque Converter Restraining Device
    GM1660894Courtesy of GENERAL MOTORS CORP.
  8. Install J 21366  .
  9. Reinstall the transmission into the vehicle. Refer to Transmission Replacement .
  10. NOTE: The FastLearn (adapt) procedure must be performed. This can be done in one step using a scan tool. If this procedure is not done, the TCM's adaptive values will be at the settings that it learned for the old components. and will be in slow adaptive mode. Under these conditions, it would take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.
  11. Perform the FastLearn procedure. Refer to FastLearn Procedure .