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1998 Cadillac Seville STS electrical problem

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 1998 Cadillac Seville STS electrical problem


This topic contains 2 replies, has 3 voices, and was last updated by Zach Kirkpatrick Zach Kirkpatrick 1 year, 9 months ago.

  • Creator
  • #872817
    Thomas O'Neill
    Thomas O’Neill

    I feel bad as the new guy just jumping right into asking for advice on a problem.
    This electrical problem came out of nowhere and I honestly have no clue where to start.
    Here is the issue.
    When I turn the key to on everything works fine (Dash lights, gauges, radio, interior lights, windows, climate control) all work perfectly, the second I start the car all of that stops working, the gauges stop working the interior lights stop working, the window switches don’t work, the radio stops working.)
    The dash will light up with “Security” “Service Engine Soon” “Traction” and that’s it.
    I’ve checked the fuses and relays and all are working, so I’m not sure if there is a ground issue or what.
    I really don’t know where else to look.


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  • Author
  • #872819
    A toyotakarl
    Its me

    I think think you may have a VATS passkey security system. Well known for keeping more owners from starting their car than stopping a criminal from stealing it. I had it on a 1999 Seville and used a resistor to solve the problem. If this isn’t the issue, then you may have a problem with your cluster. They are coded to the VATS system so getting a new one from the pick and pull won’t help unless you have it re coded to the same resistance that is on your key chip (there are 15 different codes) . You can find the code for your system by using an ohm meter to read the ohms on the chip of your key and referencing it to the list on the website at the bottom. Or you can send it to SPECMO. SPECMO also they can change the code to match your key (if you get a different cluster from the pick and pull). Also they may be able to repair a bad cluster if yiu have a bad one.

    More info:

    Zach Kirkpatrick
    Zach Kirkpatrick

    Good morning all! Thomas, did you ever get this issue resolved? I am having the exact same issue and was hoping you had some insight! Thanks in advance!

Viewing 2 replies - 1 through 2 (of 2 total)

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