GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 38450-A Third Clutch Sprag Retaining Ring Tool


    Object Number: 174850  Size: SH
  1. Install the input sun gear assembly (646) into the third clutch housing (634).
  2. Slightly rotate the sprag race (647) to engage the race into the third clutch housing (634).
  3. Install one J 38450-A at each extremity and center of the retainer ring (648).
  4. Important: When installing the sprag (647) rotate the input sun gear (646) to assist in engaging the clutch plates. You will hear an audible click when the snap ring has seated.

  5. Compress the sprag retainer ring (648) using a screwdriver opposite J 38450-A while pushing down on the outer sprag race (647).
  6. Engage the sprag retainer ring into the groove in the third clutch housing (634).
  7. Remove the tools.