'97 Deville Electronic Speedo went blank!

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Electrical Technical Information Discussion, '97 Deville Electronic Speedo went blank! in Item Specific Cadillac Discussion; You guys are great! Very insightful! I hope you guys can help me. My '97 Deville Electronic (green digital) Dash ...
  1. #1
    jah316 is offline Cadillac Owners Member
    Automobile(s): deville
    Join Date
    Aug 2009

    '97 Deville Electronic Speedo went blank!

    You guys are great! Very insightful! I hope you guys can help me. My '97 Deville Electronic (green digital) Dash went blank all of a sudden. I drove it to a stop light and then it comes on again for about 10 seconds! Then it slowly dimmed away (as if saying, good bye!). I have checked all the fuses and relays (under hood and behind the back seat - is there any more?) and even removed the dash and opened it up (there is no accessible/replacable bulbs for the center section that doesn't light up!). The wierd thing is that the two side digital screens still work fine (the temperature and estimated distance remaining). I read in another post that someone had a similar problem and found the ignition control relay at the back seat to be the problem. I checked all the relays at the back seat. Does anyone know which one and where it's located? Is it a 4 pin or a 5 pin? There is one black 5 pin one that clicks when I attach or remove it. Could this be it? How can I test it? Can I put a jumper wire and see if the dash lights up? HELP PLEASE! Thanks a million! Peace.

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  3. #2
    edilagan is offline Cadillac Owners Member
    Automobile(s): Deville 99
    Join Date
    Mar 2010

    Re: '97 Deville Electronic Speedo went blank!

    I have a 99 De ville with exactly the same problem. I would appreciate any help. Tnx.

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