I replaced the battery in my wifes suburban yesterday and now it will only blow out of the defrost vents. I pulled all the fuses to try to reset the controller to no avail. I disconnected the battery also to no avail. Did I fry the dampner controller?

With the key off, pull the RADIO fuse that is under the hood. Reinstall after about a minute. Turn key on for 1 minute and then start. That should take care of it. Let us know if it doesn't.

The wife told me that when she started it this afternoon it started working properly. I will keep the radio fuse in my memory bank though. Thanks for the info. This is making me more fond of my 77 K10.