Heater not working!

[4x4Jesus]

If you have had your dash/hvac controls out make sure that when it was put back together that the little gear is put back into the rear side of the knob. This has happened to my wife's jk and a friend of mines. Simple easy fix. If it isn't inserted into the back of the knob it will not allow you to switch from cold to hot.

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Yup, that's what my problem was. The retards working at the dealership didn't see that it had come off when they were working on the window switches.