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ASE Master Guru
ASE Master Guru, ASE Master Tech
Category: Cadillac
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Experience:  ASE Master Certified Technician Gm Factory Trained
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Cadillac Deville: How to Replace a Coolant Temperature Sensor

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How to Replace a Coolant Temperature Sensor in a cadillac deville 1999

ASE Master Guru :

Hello, my name isXXXXX coolant temp sensor is located on Left Rear corner of the engine beneath the EGR valve. Attached is the procedure for changing it.

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ASE Master Guru :

I have also attached fan relay locations.

ASE Master Guru :

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ASE Master Guru and 2 other Cadillac Specialists are ready to help you
I apologize, I inadvertently provided you with the wrong diagram. I know its probably too late, but here is the correct diagram.