I have a 2017 GMC Canyon with 2.8 liter duramax with about 72,000 miles. Had quite the adventure on the camping trip we just got back from. About half way into our 200 mile trip towing a 4500 lb camper i get the message "Cleaning exhaust filer, must keep driving. So of course i drove the 100 or so miles to our destination and that message stayed on the whole time. Then i made one trip about 20 miles one way into town without the camper and the message came back on right away. Tried to get it into the dealership but they had no available appts. So hooked the camper back up started back home and the truck still had the message then went into low power mode and check engine light, thankfully we were not quite to the interstate yet so we were able to find a campground nearby that had a spot available and we could do nothing else cause it was July 4th. Was able to watch the fireworks so that was a bonus. Next morning (yesterday) got into the service line at the dealership, told them my situation and they were thankfully able to work me in. They did a manual regen there and sent me on my way. Towed my camper 200 miles back home with no issue. I hope that was all that was needed cause we have another camping trip even longer next week and more rural so i hope no more issues with this but reading other posts i am a little concerned. Also my normal driving is probably 80% highway and 20% city. Thanks for any insight you all can give.