2012 Dodge Ram was not blowing heat ??

[Big A]

So without getting into a Dodge/Chevy/Ford debate.... I was hoping someone would have some insight on what the problem was.

Last weekend I left LOTW in -25temps. Truck was idling for well over an hr before leaving the lake. It was blowing cold air. Drove into Baudette with no change. All temp gauges were normal. Hoses all warm under the hood.

Looked under the engine and it was packed with snow from a few drifts that i took down out on the lake

Pulled truck into a heated garage for 10 minutes and hit under the engine with some hot/warm water.

Problem solved.

So ultimate question is.... what in the heck was the problem??

Any ideas??

[Gus]

My shade tree guess would be a frozen coolant line running to the heater core.

[JOHNBIGDOG]

If I were to take a swag, and you verified that bothe hoses to the heater core were HOT, maybe a blend door motor is/was bad/frozen. Brought it inside and thawed out.