2020 Chevy 2500HD 6.6 L5P bought in July 2020... towing 11k camper. At 11k miles, CEL came on (P2002 error) while on camping trip with fam. Got a night at a rv park next to Chevy in Deming, NM. Chevy says needed software update, cleared code. Got back to South Florida, at 14k CEL (P2002 error again) comes on again, this time in Chevy for two weeks, complete DPF replacement. Here I am in Las Cruces, NM... arrived Sunday night, setup camper, ran to Walmart, 19k miles... CEL comes on again (P20EE this time). Truck is at Bravo Chevy in Las Cruces and they're saying maybe converter needs replacing, maybe NOx sensor... you can't make this crap up. Paid $50k for a workhorse to fulltime RV with my wife and two kids and this is absolutely unacceptable. 90% of miles have been while towing at highway speeds... Chevy says NOx sensor replacement if needed is on back order... may end up stranded over 2k miles from home...purchased in Florida... when does a vehicle qualify as a lemon?