heater not working on 2002 Dodge Ram 1500

heat work when first turned on then blows cold air

Asked by for the 2002 Dodge Ram 1500
We recently had this problem on a 2003. My trusty service guys found a hole in the radiator. Problem solved with new radiator and coolant.
2 more answers
check for low coolant level change coolant or thermostat or both, if fluid on floor mat front d and p or even just one side- insi
de heating core is likely gone
the heater in my truck dose the same thing, called dodge a year ago they told me that there is recall on my truck for the heat blower.