My truck only blows air trought the lower bottom and not the others? How can I change that?
blend door actuator there are many I believe 3 on the heater bomb the one you are looking for is some where on the in the middle or under the heater bomb. operate the switch and see which ones do which function the ac and heater has one at the bottom close to the floor but the vent to floor one should be on the side.
this is more what yours might look like
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