I have a 2003 Dodge Ram 1500 SLT 4.7 4x4. My heater was blowing hot and it was never overheating. Then it started blowing cold so I did some research. It said it could be a thermostat stuck open so I bought a new thermostat and coolant and fixed it. Now it's still blowing cold and overheating. What is the problem?
By ryan312
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