2001 GMC Sierra 1500 Q&A

2001 GMC Sierra 1500 Question: ac and heater dosnt work

my 2001 gmc ac and heat does not work any ideas on wats wrong and how to fix? -
Answer 1
What do you mean by a/c and heat "does not work" on your 2001 GMC Sierra 1500? Is there no air flow? Is the air flow incorrect? Is the temperature incorrect? -