On my 95 the cab air is stuck on defrost, no matter where I set it to it still comes out the defrost vents on the dash. I think the switch is working becuase the ac pump with cycle when you put it on defrost. Any Ideas as to whats going on? I reatched under at the actuator still moves so its not jammed.

 

On my 99 the defrost is the default setting when I lose vaccuum pressure to control the door in there. I would assume it is the same on yours. Under the hood against the firewall you will see the black rubber vaccuum lines, just check them for leaks or any rotting rubber. Might even be one just came lose of the connection. This is assuming that all of your other vaccuum operated things still work. Cruise control, 4WD selector and so on.

 

you have a vacuum leak somewhere, look around under the hood and see if you see one that isnt any good

 

Cruise control works I havent put it in 4x4 yet but Im pretty sure it works. I will hunt around under the hood and see if i can find anything. Thanks

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Well I found a line, it goes fron the drivers side right next to the brake master cylinder over the engine to the pasenger side above the exhuast and throught the firewall, its start out with like 3-4'' of rubber tube into one of the little plastic 3 way T's then into the plastic air like over to the other side, I cant find where its goes.

Heres some pictures of it.

http://i222.photobucket.com/albums/d...g/PICT0145.jpg
http://i222.photobucket.com/albums/d...g/PICT0147.jpg
http://i222.photobucket.com/albums/d...g/PICT0146.jpg

 

My 97 did that under the dash on the drivers side tward the front of the trans hump almost out of sight there is a vac pod that controlls that the dealer does stock them make sure you take it with you there is about 4 or 5 diffrent ones.

 

my 95 V10 truck had the same problem but it just blew on the floor, it was vaccum, so i stuffed the floor vents full of socks and duct taped the holes shut, went through the vents after that........not the right way to fix it, but it got fixed......