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Coolant jug


BB2nite

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There is a sensor on the bottom of the surge tank. The float could be stuck but the most likely thing is that the connector is loose or off. You can look for that and see.

You should run the OBD codes and post them here. They may tell us something else, like if the circuit is open.

I think the sensor comes with the surge tank, which isn't too expensive but it clearly isn't cheap either. If it comes to that, replacing it is a decent DIY job.

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I just recently heard that you can buy the level sensor separately, the problem will be finding it

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I would try cleaning the tank first, its almost free. After removing it from the car I used a degreaser in mine and shook it repeatedly, let it set for an hour then rinsed it. I started working again, cant say how long it will work, since I have the engine out now.

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That is good advice from airmike to clean it, we have seen cleaning it solve this problem

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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