I just bought a 94 deville and the climate control fan is stuck on high? how can i correct this?

 

sounds like your fan/blower controller has failed ..

 

i took it to a local mechanic and he said the blower motor is not made for this car. so in order to fix it i have to buy the right blower motor and install it.......grrrrrrr

 

the blowers and the modules are interchangeable between many GM cars .. check the salvage yards, many out there.
modules .. $25
blowers .. $35
it usually an easy install on the firewall.