Caddilac deville2004 oerheati g and heat not working g

Asked by Dec 23, 2015 at 03:03 PM about the 2004 Cadillac DeVille Base

Question type: Maintenance & Repair

I changed the thermostat and the best stop working and it keeps over heating

2 Answers

68,635

If you have the Northstar V8 it's going to be the head gaskets. They all blow head gaskets. Check for combustion gasses in the coolant. You can get a chemical additive for this or your mechanic can do the test. To replace the head gaskets correctly you're looking at upwards of $3500. For starters the engine and transmission have to both be removed from the bottom of the car. It's not possible to do the job any other way. In my opinion it's not worth fixing. HTH. -Jim

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120

Djd you onstall the thermostat in the correct position.. If not it could cause the problem your having.

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