i have no heat to the rear heater core on a 2000 ram 3500 van,front works great
Well I was looking up what makes that tick. So what I have come up with is possibly the rear heater core is plugged. I don't see any valves for the system to replace. Possible back flush may take care of it. I would find a radiator shop to have this done or have them clean out the heater core, or just replace it. Up to you.
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