1998 B3000 pick-up with heater problem

burgess400

Member
:
B3000 pickup 1998
doesn't matter if air is on keeps blowing out hot air. heat does not change when button is turned from cold to hot and back to cold. seems like it's hotter on air than on max air but still hot no matter which selection is made. anyone else have this problem?
 
Sounds like a problem with the blend door.Is the heat control manual or electric????
 
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