I have my 2011 duramax, 60K miles in the second time in a month for the cleaning exhaust filter message coming on and not going out. First time they said it needed a manual regen. Cost me $300. Don't ...
Do you do alot of idling?? Alot of stop and go with no highway driving?? If the engine never comes up to operating temp, stays there for awhile, and operatered at highway speeds, it cannot/will not go into regen.