2001 GMC Sierra 1500 Q&A

2001 GMC Sierra 1500 Question: sometimes my air cond./heater gets stuck and blows hot air with air cond on?

has only happened twice this july. goes away when engine is shut down and cooled. -
Answer 1
same problem on toyota highlander, seems tightening the nut under the selection knob that holds the selector in place, solves the problem....temporarily anyway. guess i'll try some locktite next time to make it more than temporary. -