New member with a new problem with heater core leaking

[Leonandlisa]

I have a 19’ ram 1500 Laramie with 70,000 miles. Been very happy with truck, had one ac seat ventilator replaced due to noise and and ripped off the active air dam with a tire tread on the road, other than that stuff been good to me. This weekend I came out and I have a puddle behind my front passenger tire, digging deeper I can see coolant up under the dash on passenger side on firewall, and carpet under mat is wet. Anyone had to replace a heater core, any guess if parts are a available? I have a call into dealer but no response yet.

Thanks

Leon