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coolant.

  1. Heating & Cooling
    okay, so to the least this problem is very annoying. To begin my truck is a 2001 ram 5.9 4x4 offroad. The problem: I turn the defroster on (either heat or cold) and it switches to either one randomly. If I put it on cold, it goes to cold for a minute or two then switches to hot by itself. It...
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