I am looking at a 2007 EB EL with 159k, truck is amazing 0 issues except it had the rumble strip TC issue. Was going to buy until I felt that. Took it back to seller they had it flushed and He now says the issue has been resolved. Great BUT will this last? Has anyone ever done this? Can someone provide me this info please since I am supposed to go back in a few hours and buy, just nervous about the high mile flush. Thank you all in advance.