Issues with your heater in your 2010-2020 Ram 2500/3500 can stem from a few different areas. One of the common failure points is the heater core itself. Engine coolant flows through the heater core and as air from the blower motor passes through it, it heats the air warming the cab. Typically, a bad heater core can either become clogged or will start leaking coolant into the HVAC system causing a smell of coolant in the cab or moisture appearing on the windshield in the defrost mode. This direct replacement heater core installs using factory hardware in the factory location and will restore proper operation of your trucks heater system.