http://www.forrestrace.com/temperature-control-2/
How do I replace the manual temperature control module in the dashboard of my 1998 Ford F-150?
When I turn the control knob, nothing happens. If I remove the knob and spray some silicone around the stem of the control, I can get it to turn from warm to cool a few times but then it goes back to just turning and not doing anything. I’m sure I need a new control module and would like to replace it myself. Does anyone know how to remove and replace this part?
Your safest bet is,if you want to do it yourself, pick up a manual. You can find them practically anywhere. It’s always handy to have around just in case.All you need to know is the make and model of your vehicle and the year.
Digital Temperature Controller