Yes I agree. The recirculating system in my new 2020 is horrible. I’ve owned 7 Chevy trucks in my life. 81,86,90,97,03,15 and 20. I don’t really remember up to the 97 but the 03 onwards has been terrible. It’s an open system that should be a closed one. I love my truck but GM is way behind the 8 ball on this one. I’ve looked into an after market fix but have had no luck! Any comments regarding this issue would be appreciated.