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After a month long road trip there is a few things wrong the oddest is the heating and cooling selection.


the truck is limited to either full hot, or full cold and with cold it’s AC only, not just drawing in outside air. 

it’s the same regardless of fan speed, it’s also gotten “stuck” on one or the other but if you leave it selected to the other long enough, or shut the truck off and turn it back on it’ll go to what is selected. 

any ideas? All vents work, fan speeds no issues.  I also have a heater treater installed but that was put in years ago. 

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