theromstat on a 03 cts
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V6: 3.0, 3.2 LA3, 3.6 LY7, 3.6 DI LLT Discussion, theromstat on a 03 cts in Cadillac Engine Technical Discussion; I had the engine light come on my 2003 cts I took it to my local GM dealership to find ...
  1. #1
    ravirye is offline Cadillac Owners Member
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    theromstat on a 03 cts

    I had the engine light come on my 2003 cts
    I took it to my local GM dealership to find out the problem
    He told me I need a new theromstat
    and it would cost me $1200 to fix it

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  3. #2
    LS1Mike's Avatar
    LS1Mike is offline Cadillac Owners Connoisseur
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    Re: theromstat on a 03 cts

    Mine went bad and it was 400 bucks, It requires the removal of the intake. I was going to do it but, they did it under warranty once and it failed again. So they charged me 175 bucks to do it. Does your car have the option to read codes throught the DIC?
    You turn the key to on and hit the 1 and 6 preset buttons at the same time. It allows you to read the codes.

  4. #3
    ravirye is offline Cadillac Owners Member
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    Re: theromstat on a 03 cts

    these are the codes that DIC is displaying
    * EBC 25746910 6008
    *MSM 25739645 1676
    AMP 25745128 3440

  5. #4
    LS1Mike's Avatar
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    Re: theromstat on a 03 cts

    Did you look at each code?

  6. #5
    PSRmark's Avatar
    PSRmark is offline Cadillac Owners Fanatic
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    Re: theromstat on a 03 cts

    Quote Originally Posted by ravirye View Post
    these are the codes that DIC is displaying
    * EBC 25746910 6008
    *MSM 25739645 1676
    AMP 25745128 3440
    It would be a PCM code. Either P0125 or P0128...the P0128 is more common to a Thermostat failure...1200 seems a bit high. I wouldn't pay that. Normal cost of that repair is approx 400-650 through a dealer...they are adding other things in that cost, like maybe a coolant flush or something of that nature.


    Good luck,


    Mark

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