A/C fan only works on high...

[Greenlee]

Originally Posted by f.monroe

What year truck ? My 73 Cheyenne only blows on high if the temp control lever is all the way over to cold . If you back it down a little , you feel a click and then the fan can be run in any speed . The owners manual says that this is how it is suppose to work .
Frank

It's a 1976 Silverado. I am planning to check out everyones suggestions this weekend and see if I can figure out what's wrong with it.