ac issue maybe electric

[klinkzor]

when i run my AC on low it's fine and blows nice and cold but if i switch to max AC i here a slam in the box near the trans tunnel and barely anything comes out of it. but you hear the fan blowing harder. if you switch it back it works fine again.

another problem if you run the truck for awhile with heat or ac and you leave the controls where you had them and turn the truck off there's a buzz behind the dash. if you reach over and turn the switch to off the buzzing stops.

 

[Smithereen]

Max A/C is when it recirculates the air in the cab. Maybe something isn`t wright with the doors in the ducting?

 

[DaveBen]

That is what it sounds like. Look to make sure you did not knock a vacuum hose loose or off. Very common problem.

Dave

 

[JLDickmon]

don't be suprised if it has a broken door in the box..
I haven't run across any yet this year, but I usually put a couple heat/ac boxes in per year..

 

[klinkzor]

how hard is it to get the heater box out of theses things? I've pulled a few and it's normally a giant pain.

 

[JLDickmon]

how hard is it to get the heater box out of theses things? I've pulled a few and it's normally a giant pain.

You, are correct, sir!