Air works great but no heat just blows cold air

SOURCE: The blower works blowing only cold air no heat? I

The heat is generated by a radiator located in your dash using engine coolant. You don't have heat because the valve that is controlling the coolant flow is closed - either it or the commands that is controlling it are broken - find which and fix them.

Testimonial: "Is this valve easily accessible? How do you keep it open? Commands, is that computer realted?"

SOURCE: The heat is not working in my car... it blows

generally **** has built up in the heater core to the point where it is so thick there is no transfer of heat or the core is just plugged. and i will bet that the dashboard has to be removed to replace the core so not really an owner serviceable item. what i did on my old 01 vitara was disconnect both hoses to the heater core, then i put a lawn hose on the heater core pipe end, one at a time, and blew **** out of it first one way and then the other. now bear in mind you could blast a hole through a weak point in the core, then you will be running without one. this hillbilly process restored some heat to the heater, in that and other cars,but it was not like a new one.