Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Those are symptoms of air in the cooling system - especially that "gurgling" sound you hear from the heater core. You might take this opportunity to flush out the old coolant and get a fresh 50/50 mixture in there. Start with a cool engine;
Please let me know if you have any other questions.
The key to a successful cooling system flushing is patience. Were this my truck, I'd flush it again following the indicated steps - there are relays and fuses that control current to various components such as blower motor, etc. However, there are none that are part of the cooling system itself that could produce the symptoms you describe.
As an optional test, you could get a loaner pressure tester from any of the local major auto parts retailers and make sure there are no weak points such as bulging hoses.
By the way, I recently sold our home in Richmond and retired to the Dominican Republic - goodbye cold winters ;-)