Ecm? Whats wrong Ẅith my 2006 dts
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Cadillac DTS Forum - 2006 through 2012 Discussion, Ecm? Whats wrong Ẅith my 2006 dts in Past Cadillac Vehicle Discussion; I have a 2006 dts and have for the second time had a problem with getting it started. The first ...
  1. #1
    balln843 is offline Cadillac Owners Member
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    Angry Ecm? Whats wrong Ẅith my 2006 dts

    I have a 2006 dts and have for the second time had a problem with getting it started. The first time it happened I turned the ignition to crank it and all my dashboard warning lights came on and stayed on (traction control, check engine, abs) and car would not attempt to crank. I also noticed gear indication light was not on and I couldnt move the gear shift at all. I also notice fuel gage wasn't working either. I knew it wasn't the battery cause everything was working as far as power. I troubleshot for 3 days by disconnecting battery for 30min ,checking fuse and relays etc. I thought water may have gotten somewhere or something . Well I got it towed after 4 days of trying to get it to crank. I tried cranking it before we put it on the wrecker , nothing happened. They got it to the a little shop around the corner and tried cranking it and cranked right up on the first try and every try after that. The mechanic said he couldn't fix what wasn't broke. I left it there an extra day to see if it would crank and it did. They ran a diagnostic on it and there were no current codes but a previous history of no communications ECM and I think TCM. I drove it for 2months no problem but now yesterday it doing the same thing.



    CAN SOMEONE PLEASE POINT ME IN THE RIGHT DIRECTION!

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  3. #2
    Stepside is offline Cadillac Owners Enthusiast
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    Re: Ecm? Whats wrong Ẅith my 2006 dts

    Check all ..... ALL , your ground connections. Remove, clean, reinstall.

  4. #3
    billdaman is offline Cadillac Owners Fanatic
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    Re: Ecm? Whats wrong Ẅith my 2006 dts

    Quote Originally Posted by balln843 View Post
    I have a 2006 dts and have for the second time had a problem with getting it started. The first time it happened I turned the ignition to crank it and all my dashboard warning lights came on and stayed on (traction control, check engine, abs) and car would not attempt to crank. I also noticed gear indication light was not on and I couldnt move the gear shift at all. I also notice fuel gage wasn't working either. I knew it wasn't the battery cause everything was working as far as power. I troubleshot for 3 days by disconnecting battery for 30min ,checking fuse and relays etc. I thought water may have gotten somewhere or something . Well I got it towed after 4 days of trying to get it to crank. I tried cranking it before we put it on the wrecker , nothing happened. They got it to the a little shop around the corner and tried cranking it and cranked right up on the first try and every try after that. The mechanic said he couldn't fix what wasn't broke. I left it there an extra day to see if it would crank and it did. They ran a diagnostic on it and there were no current codes but a previous history of no communications ECM and I think TCM. I drove it for 2months no problem but now yesterday it doing the same thing.
    CAN SOMEONE PLEASE POINT ME IN THE RIGHT DIRECTION!
    Check battery for dead cell. My battery went out last year. It would go from a full charge to dead in a 5 minute drive to the store. (This actually happened, battery just came off the charger, was "full" then drove a few miles and went to the store, minutes later completely dead!) Changed battery, problem went away.

  5. #4
    Tom's Caddy's Avatar
    Tom's Caddy is offline Cadillac Owners Fanatic
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    Re: Ecm? Whats wrong Ẅith my 2006 dts

    billdaman is probably right. The battery you bought should still be under warranty, demand a new one and let's hope that is the problem.

  6. #5
    Stepside is offline Cadillac Owners Enthusiast
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    Re: Ecm? Whats wrong Ẅith my 2006 dts

    Yup, do a battery Load Test.
    What Bill said is correct.
    Voltage is not always a good indicator of battery condition.

    Also, even if the battery was good, the connections to the Body and/or Engine may be compromised.

  7. #6
    Superjim's Avatar
    Superjim is online now Cadillac Owners Connoisseur
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    Re: Ecm? Whats wrong Ẅith my 2006 dts

    One ground to be sure to check is where the battery cable connects to the floor of the car.
    Take that one loose from the floor.. use sandpaper to remove a little bit of the paint on the floor of the car, so that it will have a good connection.

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