Why is air conditioning system not blowing out cool air?

Hello, how many miles on this Traverse? I'm sorry to say - the cabin air filter doesn't affect air temperature in any way. There are many possible causes as to why you are not getting cool air. Unfortunately nothing can be determined without a hands on inspection. I would strongly recommend finding a repair shop near you that has a technician who is certified in refrigerant handling and knows how to diagnose air conditioning system operations. Consider also a Chevrolet dealership if you have factory warranty still. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops