- Buick Ownership
- 2007 Lucerne
I have already replaced the radiator, heater core, all of the door actuators, thermostat (2x), and thermostat sensor. Each time I replace something, the heat works for 2 days and then blows cold. I am getting a code that says I need to change my thermostat. I am out of ideas, and cold. Any ideas on what the problem might be?