why dont bottom vent doors not open on 2001 gmcsonoma
There may be several reasons why the air only blows out the front vents and not on the floor or the defrost on the 2003 Dodge Ram. The fuses may be blown, or the heating coil is not working correctly.
sounds like the vent door that changes the air from defrost to heater is jamed its a little metel door like a flap.follow the cable from defroster switch and you should be at the door,its a manual door
This is the same on all cars. When the air flow is OFF in a section, the it blows stronger to the other vents. In this case the ones for the windshield. This makes defrosting quicker so you can start driving safely sooner.
no heat to front window went defrost is on
Check for vacuum leak either under dash or hood Check for bad vacuum motor under dash Defrost is the default setting for this vehicle
Try unplugging your AC compressor and see if it still blows the fuse. When you turn on your defrosters you also turn on your AC.
Check the blend door actuator.
It would depend on which defrost system is not working, the rearview mirrors, back window or front window.
Take the whole lens out
so far everyone points to actuator blender failure but check for vacuum leaks first
LOL rear wheel drive
Remove the front grill to access the headlights.