SAME 2001 DODGE DURANGO HAS BLOWING HEAT BUT NOT AT FLOOR VENTS

Vacuum problem or latch may be broken n door.

Easy fix you will need some vaccine line ..the blend door works off vaccume the vac line runs off the intake and runs into fire wall find the broken line and fix with the vac line ....let there be heat!!

most likely your controls are bad or a vacuum leak in dash

sounds like the selector door the actuator hooks to is hangin up and not allowing it to switch heat to the lower dash, or possibly duct tube unhooked, anyone had it apart before??

if it works off vaccum you have a vaccum leak

it sounds like the switch lever for the vents, floor and defrost is not switching the vent door that goes to the defroster hose. You need to pull the switch consol out loose from the dash and follow the cable for the defrost that goes to the hose for the defrost. You might also have a broke switch that won't pull the cable enough to open the air for the defrost hose.

CHECK FUSE BOX BLOWN FUSE TO POWER OF VENTS.

had this trouble in a dakota it was a blend door in the heater unit. had to remove entire dash to repair

the vent door is broke in the heater control box under dash

Had the same problem. believe it or not i changed the gas cap and got heat all around. something about pressure.