Engine hot,ses light what else can go wrong!
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Cadillac STS-V Series Forum Discussion, Engine hot,ses light what else can go wrong! in Cadillac V-Series Forums; Woke up this morning tried to start the car with the key fob not workink wtf,so i hop in the ...
  1. #1
    Psycho-albanian is offline Cadillac Owners Fanatic
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    Engine hot,ses light what else can go wrong!

    Woke up this morning tried to start the car with the key fob not workink wtf,so i hop in the car and start it normally the engine hot light comes on and the fans are full blast and just 2 days ago my ses light came back on for 02 sensors again. Dealer won't touch the car because of 2 many mods. my mods are intake,exhaust,tune. I have no idea what to do i'm in debt already as it is and now this crap happens.

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    LITTLEELVISDAN's Avatar
    LITTLEELVISDAN is offline Cadillac Owners Connoisseur
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    Re: Engine hot,ses light what else can go wrong!

    its most likely your theromastat sensor has gone bad.. Really its a known issue for 06's.. They should replace that under warranty

  4. #3
    jedhead is offline Cadillac Owners Enthusiast
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    Re: Engine hot,ses light what else can go wrong!

    I had the same high temp problem with mine. The dealer checked everything and found nothing wrong. They did replace the thermostat sensor "as a precaution" and reflashed the PCM. The PCM reflash make a large difference in how the car ran.

    Bob

  5. #4
    kbf250 is offline Cadillac Owners Member
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    Re: Engine hot,ses light what else can go wrong!

    I've had mine at thr dealer three times for that and they can find nothing wrong. In the 14 months I've had the car it has happened 8 times.
    I get "Engine hot AC off" and a code that registers as "coolant temp at or below threshold". When this happens my fans will run all the time
    until the code is reset. Now I carry my scanner with me and when it happens I reset the code. Usually it happens in the morning within the first 5 miles
    of driving.

  6. #5
    Psycho-albanian is offline Cadillac Owners Fanatic
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    Re: Engine hot,ses light what else can go wrong!

    i have a 07 and this is the second time the engine hot light came on. The dealer is being a dick they charged me 100 bucks to clear the code they don't want to warranty anything with the engine,trans,rear.I'm so ****ed.

  7. #6
    choigilligan is offline Cadillac Owners Fanatic
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by Psycho-albanian View Post
    Woke up this morning tried to start the car with the key fob not workink wtf,so i hop in the car and start it normally the engine hot light comes on and the fans are full blast and just 2 days ago my ses light came back on for 02 sensors again. Dealer won't touch the car because of 2 many mods. my mods are intake,exhaust,tune. I have no idea what to do i'm in debt already as it is and now this crap happens.
    Wow, has anyone else had a dealer not want to do warranty work because of just those basic mods, intake, exhaust and tune. Psycho-albanian what type of tune do you have. What intake and what exhaust.

  8. #7
    LITTLEELVISDAN's Avatar
    LITTLEELVISDAN is offline Cadillac Owners Connoisseur
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    Re: Engine hot,ses light what else can go wrong!

    intake and exhaust are fine by most dealers, but once they can prove you messed with the computer kiss your warranty good bye.

  9. #8
    CIWS's Avatar
    CIWS is offline Cadillac Owners 10000+ Posts
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by LITTLEELVISDAN View Post
    intake and exhaust are fine by most dealers, but once they can prove you messed with the computer kiss your warranty good bye.


    A maintenance notice came out in 08 (I think) telling GM techs to look for tunes if major warranty work was being done on drivetrain components. (it's posted here in the forum)

  10. #9
    choigilligan is offline Cadillac Owners Fanatic
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by CIWS View Post


    A maintenance notice came out in 08 (I think) telling GM techs to look for tunes if major warranty work was being done on drivetrain components. (it's posted here in the forum)
    Which tunes can I use that the techs can't find, don't want to mess up my CPO warranty.

  11. #10
    jedhead is offline Cadillac Owners Enthusiast
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    Re: Engine hot,ses light what else can go wrong!

    The ones that are on a different PCM. I have a spare PCM with a tune.

    Bob

  12. #11
    choigilligan is offline Cadillac Owners Fanatic
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by jedhead View Post
    The ones that are on a different PCM. I have a spare PCM with a tune.

    Bob
    What's a PCM, is that like an ECU

  13. #12
    silverws6ta's Avatar
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by jedhead View Post
    The ones that are on a different PCM. I have a spare PCM with a tune.

    Bob
    The way to play it safe!! The ECU is underneath the drivers side bumper essentially -- Tough to get to and swap unless you have some ramps or a lift -- but can be done.

  14. #13
    Psycho-albanian is offline Cadillac Owners Fanatic
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    Re: Engine hot,ses light what else can go wrong!

    This sucks cause now the car sounds like it wants to stall out during start-up. iIt sounds like i have a big cam in it. If i flash it back to stock i think the dealer would still know if i had it tuned.

  15. #14
    RippyPartsDept's Avatar
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by Psycho-albanian View Post
    If i flash it back to stock i think the dealer would still know if i had it tuned.
    maybe, maybe not ... only one way to tell
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at
    Rippy is a Cadillac, Hummer, Saturn & Saab dealership - family owned and operated in Wilmington, NC since 1946
    We offer all forum members deals on parts and freight - e: parts@rippyautomotive.com ph: 800-RIPPY-22
    <-- insert standard boilerplate about posts not necessarily representing my employer, etc -->

  16. #15
    jedhead is offline Cadillac Owners Enthusiast
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    Re: Engine hot,ses light what else can go wrong!

    Quote Originally Posted by choigilligan View Post
    What's a PCM, is that like an ECU
    PCM Powertrain Control Module aka engine computer unit.

    Bob

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