Suddenly lost heat in cab, 2001, 379, any suggestions on what happened?

Howdy stayinback,

That's what I am thinking but I don't have a clue where it is and I don't want to tear half the truck apart looking for it, I was hoping someone who has knowledge of such things would offer up some instructions. Thanks for your post.

Dave

 

Howdy stayingback,

Thanks, I'll take a look tomorrow at that area. I remember when I was installing the air operated trailer brake I had the entire lower section of the dash all tore apart I was looking to see what was hidden back there but don't remember any sort of duct work. That said I didn't take apart or need to look under the glove box so that area is still a mystery to me.

Dave

 

Howdy pushbroom,

THANK YOU, you have again come to my rescue. This forum and the folks who are on it are some of the most helpful people on the internet. I'll make this test tomorrow and check back with the results.

Dave

 

Howdy All,

I want to thank everyone who offered help in solving my problem especially @pushbroom. It was the heater blend door actuator that was the problem, I looked all over checking prices on the part, it seems that the "Dorman" brand is the one to buy, I bought it at Auto Zone, tax included it was $60.05, LIFE TIME warranty good at any Auto Zone store in the country. That price beat most of the ebay prices and I didn't have to wait two weeks to get the part or pay any shipping. Thanks again.

Dave