Chevy Silverado and GMC Sierra Forum banner

AC Warm Air

1K views 5 replies 3 participants last post by  MGMTF 
#1 ·
I noticed over the summer warm air would randomly start coming out of the vents. I thought it was the A/C, but warm air would still come out when I turned the fan off. This happens randomly; sometimes it'll be ice cold the whole trip, others it'll be warm. My girlfriend noticed it was coming from the middle vent and not either of the side vents.

I recharged the A/C but it didn't help at all. Any thoughts?
 
#2 ·
Kinda sounds like a air door issue if its only certain vents, or maybe a clogged exchanger. But does it go to the correct vents when you change the directional setting with the nob? I had that problem with my truck, PIA to change. One of the only things I had a shop do lol
 
#5 ·
I believe there is what is called a blend door in the system. It moves to allow either more warm or cold air to keep the temperature that you have selected. I sounds like that door is not functioning properly. I don't have a clue how to fix it though. Am sure someone else will be able to add to this. Good luck.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top