Having problems with your 1999 Ford F150 Regular Cab ?
Cold to heat knob in my ford f 150 is stuck on cold, and when you rotate it to the warm setting it will not let the heat in !
Make sure its really turning, the knobs are prone to crack, and you end up turning the knob, but not the shaft. The knob just pulls straight off, take pliers and gently turn to hot. If that works, replace the knob.
Repair Help & Product Troubleshooting for 1999 Ford F150 Regular Cab
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