jengaroo

I have a 2004 Titan that only provides hot air into the cab when I'm moving. Any idea what might be causing this?

habenero2002

There is most likely air trapped in the cooling system. The cooling system needs to be bleed of air.

VetteGuy

Check for coolant leaks as well. A slight coolant leak can also suck air into the cooling system. This can cause the condition mentioned above.

GeeVee

I just took mine in to the dealer for the same problem. There was a very small leak in the radiator (was not leaking on ground) which created an air pocket. Radiator is being replaced (under warranty).