Stuck on DEFROST!!!

[Rockstar]

Cant find a vacuum leak. Heat n AC work. But the "blend" indicator just blinks. Befor it would only switch between df dash and floor, wouldn't.

[Da90]

Mine does the same thing! Find anything out on how to fix it?

[riviera rider]

when mine was stuck on defrost i changed my climate control on the dash, my rca wires made it short out and you could see it was burnt up in areas since the board isnt covered

[Da90]

Are you are talking about the switches? I just put new OEM controls in and it still does it! My 97 SWB did the same thing and I also put new controls in it. Still same problem!?

[riviera rider]

damn them switches aint cheap i spent over 100$ on mine and ive went thru 3 of them lol

[Mex-Nali]

Cant find a vacuum leak. Heat n AC work. But the "blend" indicator just blinks. Befor it would only switch between df dash and floor, wouldn't.

My '04 did the same thing after I replaced the battery. Thinking something was up, I googled it and on page two I found this gem:

Turn the climate control and the radio off.
pull the fuse under the hood marked hvac/ecas 10 amp in the right side
Leave the fuse out for about a minute.
reinstall the fuse.

******do not touch the c.c. switch when you restart the truck******
restart the truck, the c.c. will automatically reset to 74* and start cycling.
it will take about 1 min for the c.c. to reset itself, you should hear it running through the cycles.

there has been one or two times I've had to go through this procedure a couple of times for it to reset.

Worked.

[SunlitComet]

Wong year forum buddy.