Deville digital temperature gauge inop
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Deville digital temperature gauge inop in Past Cadillac Vehicle Discussion; Greetings, fellow techs and Cadillac owners. I have an 02 Deville and the temp gauge(digital) is inop. I replaced the ...
  1. #1
    GabboTheGreat's Avatar
    GabboTheGreat is offline Cadillac Owners Member
    Automobile(s): 2002 Deville
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    Deville digital temperature gauge inop

    Greetings, fellow techs and Cadillac owners. I have an 02 Deville and the temp gauge(digital) is inop. I replaced the t-stat and temp sensor with no avail. Does anyone know what else to check? It has 190K and my next move is to replace the level sensor. Thank you

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  3. #2
    rodnok01's Avatar
    rodnok01 is online now Cadillac Owners Master
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    The engine coolant doesn't register or reads incorrectly?
    Well the water pump nor the thermostat has anything to do with that. The ECT or wiring is probably bad. The ECT is a real sob to get to, rear head over trans and below the crossover.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Deville digital temperature gauge inop

    have you pulled the DTC's?

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a sound system
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    Re: Deville digital temperature gauge inop

    Coolant level sensor (in the surge tank) has nothing to do with gauge function.

    Here's the ECT sender location.
    Attached Images

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