Dealership told me no fix because there"s no bullitin on it I Had to live with it, sent gm a message and they said same thing been fighting this for 3 months. Any help would be nice, if more people would report the issue it might help, I see a lot of them on the road CHEVY AND GMC
I have about 15000 on mine and the seats are a little firmer but I use my tilt on the front so it doesn't cut into my legs. Longest trip so far has been 800 miles stopping once for gas but they're nothing like my 2016 this one is 2020 AT4
Just a follow-up at 4000 miles I had the cai installed on my AT4 6.2 I let the dealership do it so if there was a problem it would be on them.That be said my truck doesn't feel like it's stopped up it breathes and runs better and seems to be not as load. My gas mileage on the hwy went up getting 20 to 21 mpg at 75 t o 78 mh city about 16 average yes I'd do it again very happy with it. Get my best mileage with shell or none ethanol gas
When I bought my AT4 it had the performance exhust seemed like it couldn't breath or something wrong I had Magaflow on my 2019 it did great so I went to the dealership and drove one with the cai and performance exhust couldn't believe the difference it made . At 4000 I Had it put on mine and it's breathes and runs and idles so much better. I had them do it all they reprogrammed it set everything up to specs loving it now let you know later if it help anything else