Hummer Gremlins Argh! A/C Fan

[jsbihn]

What the hell is with these trucks an the damn gremlins. This afternoon I jump into the rig to go home. After about 15-20 minutes I noticed the A/C heater fan was blowing at top speed, even though the digital read out showed the fan speed set at 2 bars. So I fiddled with it and it wouldnt go up or down in speed, and if the gate changed from face to legs to winshield, that did nothing to change the speed either. I even shut the a/c control off and the fan still still would blow. So i get to my final destination, turn off the truck and the blower is still blowing. WTF!!
I had to pull the fuse just to get it to stop. Seems like thats all I do is pull fuses on this truck t make things that work badly stop working.
So now the blower fan isnt running but do you guys have ANY ideas what is going on?

Just to let you know, no it wasnt soaked or rained in or anything lately. Been working all week and it has been fine, then today after work....
Thanks