Stuck in defost

labdrew

New member
I have a 1999 Jeep Grand Cherokee that is stuck in the defrost mode. AC and heat works but stuck in defrost. Manual swithches. Has any body come across this:???:
 

i have a 89 xj with the same problem. i havent been able to figure out whats wrong yet though
 
Defrost is the default on the HVAC manual system. Check your vac. lines from the engine to the HVAC controls.
 
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