[hoseman]

When I turn my AC on the passenger side works fine, but the driver's side only blows hot air, even when set at 60 degrees. Any ideas? A buddy of mine has an 05 duramax and he told me his just started having the same problem.

 

[Andrew]

Hi Hoseman,
I have the same problem as you, started today. But, mine is opposite, cool on drivers side, hot on passenger. I hope someone on this forum has some suggestions. If I find something I'll pm you. This is not going to go with the wife!

Andy

 

[Mooredmax03]

Sounds like a blend door gone bad to me. I've had to replace them before on vehicles.

 

[Drolly82]

Mine once with ac on was blowing hot air, so i shut it off an drove with the windows down. Had to make a stop an shut truck off, got back in an turned ac on, haven't had a problem since.

Wierd but idk. Hope you can get er figured out.

 

[hoseman]

Thanks Andrew...hope we can get it figured out, it's about to get hot in Cali! Moore, how difficult is the blend door to replace?

 

[Andrew]

Found this on a search. I'll try it tonight.

http://www.duramaxforum.com/forum/diy-tech-discussion/9854-fixed-dual-climate-control.html

 

[hoseman]

Thanks Andrew...I'm at work today and tommorrow, but I'm gonna try to do it today.

 

[lowufo]

Glad I saw this...mine just started doing this 2 days ago. Must be a California thing, not only is our State broke, so are our AC's...

 

[Andrew]

Well, I tried the trick were you pull the HVAC/ECAS fuse under the hood. It did not work right away but after a few engine restarts and the next day I had a working system. Maybe it has to go through a few on/off cycles? Odd.

Andy