Today I finally noticed my particulate filter had a reading which I never seen before. I noticed it doesn't have a % like the other filters due, such as fuel filters or oil filters. Same dome like measurement, but only in the bar itself without a % to read other than 0 to 100% Well today at just over 2000 miles it read nearly half used. Ok, so I did some research on the filter and it's not a filter you commonly replace like the other filters and it's REALLY EXPENSIVE! Or so I read...$3000 to $10,000 if I read the information correctly. It's supposed to last somewhere around 100,000 miles before needing a replacement? Please correctly me if I'm incorrect. I researched how to clean the particulate filter, curious if I could just simply drive the truck on the freeway for 30 minutes without any light's or notifications? I read somewhere in the Forum that I could shift the truck manually and that could be a way of cleaning the filter. So I did just that. Holding the rpms a little higher than the automatic transmission normally shifts. About 15 to 20 minutes during driving the Automatic cleaning process lit up on my dashboard. Bad timing because I arrived at my destination just as the light came up on the dashboard. Somewhere in my readings I believe I read you must continue to drive while the cleaning is in process, so I kept driving for a additional 30 minutes down the Hwy averaging 55 mph. Concerned I wasn't driving fast enough at a steady pace, the cleaning was over and the particulate filter reset to 0. Relieved I continued to shift manually the rest of the day. Not really sure if that helps anything?? What i can control shifting manually is my rps keeping the rpms around 1500 3 & 4th gear and around 1200 to 1500 in 5th anything above 50 mph i usually kick it into Drive using all 6 gears. 1 filter figured out, only a few more to go...hopefully I'll get to know my truck in time. A big thanks to the response with the link to purchase filters for my truck! Very informational regarding prices of the filters, quantity recommended to purchasing these filters and the wait to receive the filters such as fuel filters. The link said you much order 2 filters and the backorder is as far as August.