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Follow along with this automotive diagnostic video as a mechanic troubleshoots a high mileage 2021 Ram 2500 6.4 HEMI experiencing no heat on the driver side while the passenger side maintains adequate heat. Learn the diagnostic process for distinguishing between blend door actuator problems and heater core restrictions, which are common issues in these trucks that cause uneven vent temperatures across the dashboard. Observe the systematic approach to identifying partial heater core clogging and discover cost-effective repair strategies before considering major dash removal procedures. Gain insights into HVAC system diagnosis, understand the symptoms of heater core restrictions versus blend door malfunctions, and explore practical troubleshooting techniques for addressing heating issues in modern pickup trucks. The video demonstrates real-world diagnostic methods, explains the reasoning behind each step, and provides valuable knowledge for both professional mechanics and DIY enthusiasts working on similar heating system problems in Ram trucks.
