I hope I am posting this correctly. I am new. Great site guys!
This week I discovered my temperature control does not work. The knob turns but the temperature of the air stays very warm (luckily it is getting colder outside these days). It doesn't matter if it is on A/C, heater or vent. Does anyone know what the deal is? I am somewhat handy with mechanic's tools, but to be honest, the last time I really worked an engine was before they had computers.

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2006 Sport, extended cab, 2WD, 4.0 v-6 automatic and totally stock.......for now.