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Thread: 05 STS V8 4 transmission fluid

  1. #1
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    05 STS V8 4 transmission fluid

    I was looking for my transmission stick and couldn't find it. I checked the manual and it said to have the dealer check it. I like to check my own fluids. Can someone tell me how to check my transmission fluid. Thank you!


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  3. #2
    1BadCadSTS's Avatar
    1BadCadSTS is offline Cadillac Owners Connoisseur
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    Take to dealer.

    Sealed non serviceable unit.

  4. #3
    curtc's Avatar
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    Re: 05 STS V8 4 transmission fluid

    Sucks but it is what it is....

  5. #4
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    Wow! Interesting. Thank you again!

  6. #5
    dkozloski's Avatar
    dkozloski is online now Cadillac Owners 10000+ Posts
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    Re: 05 STS V8 4 transmission fluid

    The fluid level of the transmission can be checked by having the car up on jack stands, level, and engine running by removing the fill plug. Don't turn off the engine with the plug out or it's oil everywhere. A GM study convinced them that a major cause of transmission trouble is dirt and other inappropriate material introduced by DIY maintenance efforts. The transmission is assembled in a clean room and sealed at the factory.
    Don't mess with Binky Bear!


  7. #6
    EChas3's Avatar
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    Re: 05 STS V8 4 transmission fluid

    Unfortunately, Koz forgot to mention the word 'hot' and that the filler plug isn't an easy task. IMHO, leave it be unless there's a concern or you want to change fluid. If that's the case, it's time to decide whether to go with the traditional pan-drop/gasket/cleaner change or a flush. Both have their adherents.

    I'm now in the former camp.

  8. #7
    mckellyb is offline Cadillac Owners Enthusiast
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    Re: 05 STS V8 4 transmission fluid

    I've changed mine, recently, and it was not the slightest bit pleasant. Still have a burn on my left forearm from it, in fact.

    I need to change it one more time, but I have a Futomo valve I'm going to put in the pan, so I can drain it, measure, then put back what I took out. That's easy enough.

    The placement of the fill port is situated such that it must have been made intentionally difficult to access.

  9. #8
    dkozloski's Avatar
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    Re: 05 STS V8 4 transmission fluid

    I've resisted all temptation to fool with mine and so far it's working great. I'll give you another report in about five more years. When I was much younger I disassembled just about every mechanical thing I had just as soon as I purchased it to see what was inside. Now that I'm much older and wiser I can see that it was not always the smart thing to do.
    Don't mess with Binky Bear!


  10. #9
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    Wow! Thank you again.

  11. #10
    KRSTS Guest

    Re: 05 STS V8 4 transmission fluid

    Quote Originally Posted by dkozloski View Post
    I've resisted all temptation to fool with mine and so far it's working great. I'll give you another report in about five more years. When I was much younger I disassembled just about every mechanical thing I had just as soon as I purchased it to see what was inside. Now that I'm much older and wiser I can see that it was not always the smart thing to do.
    I'm with you KOZ and almost as old. I now am now a firm believer in "if it ain't broke, don't try to fix it."


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