I have a 12 3500 6.7 h.o., 42000 miles this is the second time it has done it. The exhaust filter warning has been coming on, the first time was about 2 months ago it popped up at 80% then 90 and I made it home. Next time on same trip it did it again. I tried keeping the rpms up higher to make it burn but it filled up and said exhaust filter full power limited see dealer. I was 15 mins from home and I stayed on it and never saw a power decrease. Anything I can try to get it to burn the filter out without taking it somewhere?