Question about Cadillac CTS

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Dear Cadillac Expert: My aunt has a 1998 or 1999 Cadillac CTS that has a problem that their two mechanics can't seem to fix for over two years now. She is severely distressed about it and can't afford to take it to the dealership. When driving long distances, usually on the freeway, the car's temp rises slightly and then the oil genie lamp (light) comes on on the dash. Then it says to "turn off engine" and it starts dinging. After the car is allowed to cool down, she can drive the car for a while and the cycle starts over. If she drives it short distances (1-2 miles) it doesn't do this. Could it be a bad thermostat? What could it be? I would appreciate your help with this, as this car issue has become a big cause of stress to my aunt and she refuses to drive it except near her home. Thank you, Michelle A Concerned Niece

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Hi! I don't think that it's a bad thermostat. Please check the radiator if the water overflows. If the water overflows then it's a faulty water pump, but if the water runs fine then it's a faulty thermostat which needs to be replaced. Hope this helps and thank you for using FixYa!

Posted on Aug 25, 2010

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Posted on Jan 02, 2017

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