My car just overheated and heater was not working in car, what could this be?

Asked by Jan 20, 2015 at 09:02 PM about the 2002 Buick Rendezvous CXL AWD

Question type: Maintenance & Repair

heater in car blowing cold and temperature guage reading hot. This just started today

3 Answers

25,805

Thermostat might be bad, and coolant levels are low. Thermostat could be preventing what coolant you have from circulating properly and the heater core might now have an air bubble. Try changing it and bleeding the system. If the problem persists you should take a look at the water pump.

3 of 3 people found this helpful.
Best Answer Mark helpful

Thank you. I'm going to change that today and let you know how it goes.

Turns out it was a broken hose that caused car to overheat with no heat inside cabin.

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