1999 Cadillac STS, transmission & hidden main sump drain plug

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Old Oct 12, 2009 | 03:58 PM
  #21  
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Originally Posted by Adams' Apple
This is an old thread, but for those who want to know, the main sump drain plug is over by the shift linkage(driver side) side of the trans. It is visible with the lower pan removed. It takes a 7/16" socket...just a regular 1/8" pipe plug. I can get a pic and post it later...
Yes! please post that pic lol would be great help, so i dont losen up incorrect things in there. Hey Rick, I think its all ok so far. Got that lucas, just going to add it when im refilling up one more time.
Anyhow, i heard anywhere from 7 quarts to 12 quarts after pullin that plug, how many qurats is it roughly if anyone knows...
 
Old Oct 13, 2009 | 07:10 AM
  #22  
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Pics are here...
 
Attached Thumbnails 1999 Cadillac STS, transmission & hidden main sump drain plug-4t80e.jpg   1999 Cadillac STS, transmission & hidden main sump drain plug-4t80ea.jpg   1999 Cadillac STS, transmission & hidden main sump drain plug-4t80eb.jpg  
Old Oct 13, 2009 | 10:21 PM
  #23  
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Excellant! The best description about this "hidden plug" Will be sure to repost in few after the change. Thanks a ton.
 
Old Oct 17, 2009 | 12:32 PM
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I got clear idea. Thanks for sharing this valuable info. I was seeking for this since long.
 
Old Oct 31, 2009 | 07:19 PM
  #25  
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Ok, finally got to doing it. Fluid change today. Pulled plug, Didnt seem to get much out? mayb quart and half? Any way put the lucas in there didnt get to drive it much yet so ill repost in a few days. Also did lucas in oil as well so im all lucased out..Shifting smooth for most part. Gear transition nice and smooth. Fluid ids still lokking darkish thou, brown side..at least i can feel the diffrence.
 
Old Dec 3, 2009 | 06:13 PM
  #26  
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slowly working my way up to nice new fluid. Any body know which tranny line going into radiator is the pumping "in" line? and which is the return line? My plan is to put a line into a drain pan and start motor and lt it idle out and add new fluid....l any ideas? or experience with this? please post back thanks mn
 
Old Oct 27, 2021 | 03:20 PM
  #27  
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Default My 2003 Seville sts

 
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