I'm noticing a weird issue when using heat. If I have it set using auto it seems to only come out through the defrost vents and rarely ever comes out of other vents. If I move to manual fan control and choose areas to heat, it comes out of the proper vents and heats properly. This isn't expected behavior is it? About six months ago they replaced my whole heater box and all of those components due to a whistle. Auto A/C seems to work properly.
Any ideas, or do I bring it in yet again? Since I got the vehicle in February it has been in the shop for probably a total of 2.5 months. It's been a complete piece of crap. I like the car but may end up trading it in and taking the loss.