92 LeSabre (not a Limited) with a/c andrear window defrost. The heater/ac control panel seemsstuck on Defog because no matter which button I press, the air always comes equally from the defrost vents at top of dashandheater vents atfloor. It appears that no servos are working.


Which is more likely to be the culprit, the cables to the various doors, or the control panel on the dashboard? Ifcables, how do I find them? I have removed all panels fromfront of dash,the glovebox, and the black covers below the dash. The only cable I can see is the temp control, which works fine. Fan works perfect too. Any help is appreciated. Thanks. Mike

 

Consider this issue closed. After installing a replacement control panel that did not fix the problem, a friend and I checked out all vacuum lines and found a leak at the booster box, fixed it, and viola! we have Vent again.