Once you fix the problem it will turn off in about 20 cold starts, or you could just remove a battery cable for about a minuet, but you will loose the presets for the radio, heater etc.
Did that but the engine temperature coolant is not displaying on the information control center
Then there maybe a open in the circuit.
Looking for a Used Seville in your area?
CarGurus has 496 nationwide Seville listings and the tools to find you a great deal.
Search Cadillac Seville Questions
Cadillac Seville Experts