Heat controller question!
Ok. My heat control in my truck is either just cold or hot, nothing in between. I can turn it slowly from either hot or cold and it does not change one bit until I get a little over half way, then it is just hot or cold. EVery other vehicle I owned gets cooler and hotter with each increment I turn the temp knob. Why is this on not working! Someone said on here before that they thought it might be the control pad behind the knob. Anybody got an answer!! 
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 01 Dodge Ram Off Road/Sport
5.9 Auto, 14x3 air cleaner, TB mod,
180* t stat, single 2.5 exhaust muffler delete,
285/75/16 tires, cracked dash, 59K miles
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