Ram 2500 thermostat failure with no estimated replacement availability on Ram 2500

Some Ram 2500 owners report experiencing thermostat failures that lead to issues such as delayed heating or insufficient cabin heat. These problems often necessitate a thermostat replacement to restore proper heating functionality. While some owners opt to replace only the thermostat, others recommend replacing the thermostat housing as a preventive measure against future issues. In cases where replacement parts are unavailable, a comprehensive inspection of the cooling system, including hoses and the heater core, is advised to identify any damage or blockages contributing to the heating problem. Some owners have resorted to temporary solutions, such as using load resistors to trick the PCM into maintaining engine temperature, although these should not replace proper repairs. Additionally, sourcing quality replacement parts is crucial, with some individuals favoring Dorman thermostats from Napa auto parts. If heating issues persist post-replacement, inspecting the heater core for proper circulation is recommended. Promptly addressing thermostat failures is essential for maintaining the vehicle's heating system and overall performance.