2003 DODGE RAM 1500 HEAT BLOWS DEFROST OR DASK

Does the blower motor work? If not check the blower motor--wiring circuits--fuses.

If it blows any air, defrost--floor--front of dash? Maybe a problem with actuator under the dash.

You have broken doors in your HVAC housing. This is a common problem with the older body style Rams. Does require moving the dash, but it's a fairly simple process.

you have a vaccum leak under the hood on the right side between the a/c coil and the intake it's a small black hard plastic hose.

look at the resister it next to the blower motor

Check the vacume pipes under the viper shield behind the engine.

it may be the switch itself they do go bad.Otherwise he could have pinched a hose or left one off. But it sounds like he is trying to help.

Hello, Look underneath dash on passenger side of your transmission hump. The simple fix would be a broken or de-tached cable(wire). You might be able to move it by hand.The more complex solution involves (professional service)removing a substantial part of the dash to get to the internal baffle.

sounds like your cables in the selector switches may be loose or blocked

There is a actuator on the right side of your leg while sitting in the drivers seat under the dash. It has a plastic rod for actuation manually actuate this diverter and should be the problem.

Take a flashlight and look up under dash from center console area, across to passenger side, for wiring harness, and/or hoses(small rubber) , they should lead you to it. Haven't had my head under one of those recently, and having a problem tracking you down a diagram for some reason, but it has to be there.