have a 2002 Deville caddy 5.7 L CHECK COOLANT LEVEL light keeps coming on. I had pressure test new water pump new thermostat installed flushed system. Everything checked out fine 2 days later light k

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Asked by Jul 17, 2017 at 08:27 PM about the 2002 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

I have a 2002 Deville caddy 5.7 L CHECK COOLANT LEVEL light keeps coming on. I had pressure test new water pump new thermostat installed flushed system. Everything checked out fine 2 days later light keeps coming on . The coolant level is fine. I know the tank has a sensor but I can't find it. Is it in the reservoir or below it ?

2 Answers

4,655

may be there's an air pocket in the system , might be a bleeder near the thermostat housing ,

There is an electric sensor in bottom of expansion tank. In older cars it will stick and give false message. Ignore it, but open tank occasionally to check coolant level--the way we always used to do it before we got fancy.

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