Overheating

30

Asked by Mar 20, 2017 at 01:11 PM about the 2000 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

My 2000 deville base is overheating. When it is overheating I turn the heater on
full blast. The air coming from the vents is cold, almost like I have the ac on.
What could cause this?

2 Answers

76,335

Low coolant, the water pump more than likely, or the thermostat. I would plan on having the water pump replaced along with the thermostat. The impeller on the water pump disintegrates so it can't circulate the coolant.

1 of 1 people found this helpful.
7,845

Sounds like the thermostat is stuck closed, causing the overheating problem, since water doesn't circulate through the heater core, you don't get the hot air on the heater

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