Differential overheating and seal leak
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2009-2014 Cadillac CTS-V General Discussion Discussion, Differential overheating and seal leak in Cadillac CTS-V Series Forum - 2009-2014; Last weekend at a driving school on my fifth session, my differential overheating light came on. Of course, I immediately ...
  1. #1
    Trionalaw is offline Cadillac Owners Fanatic
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    Differential overheating and seal leak

    Last weekend at a driving school on my fifth session, my differential overheating light came on. Of course, I immediately slowed and returned to the paddock. This occurred about 28 minutes into a 30 minute session. The last session of the day was only 20 minutes. The light did not come on.

    I replace the original differential fluid with high-performance fluid after my first driving school and the light came on. Three driving schools later, this is the first that it came on. I have to say that I was pushing the car harder than I ever had. That may account for it.

    Nonetheless, I took it in. Dealer found a leaking seal and thinks perhaps that the sensor noted the fluid had dropped a little and therefore the light came on. I would suspect that if they have to replace the seal they have to replace the fluid. I wonder if it will charge me the difference between OEM fluid and the higher performance fluid?

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    jb_bgg is offline Cadillac Owners Fanatic
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    Re: Differential overheating and seal leak

    The faster you get and the harder you push the sooner you'll need a diff cooler for track use.

  4. #3
    spearfish25 is offline Cadillac Owners Enthusiast
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    Re: Differential overheating and seal leak

    The sensor doesn't follow levels. It's a temp sensor. You're just overheating the fluid with aggressive driving. Cooler time!

  5. #4
    Trionalaw is offline Cadillac Owners Fanatic
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    Re: Differential overheating and seal leak

    I guess you are right. I probably should look at it as some sort of achievement since I'm going fast enough to need one!

    Have a great weekend.

    Jim

  6. #5
    cruiser68 is offline Cadillac Owners Enthusiast
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    Re: Differential overheating and seal leak

    Quote Originally Posted by Trionalaw View Post
    I guess you are right. I probably should look at it as some sort of achievement since I'm going fast enough to need one!

    Have a great weekend.

    Jim
    Gold calipers and a diff cooler are sure signs you are having some fun on the road courses!!!!! I would get it most days over 50F after about 15 minutes worth of hard driving. With a cooler the light never comes on.

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