I highly recommend Dalton Auto..being someone who does a good bit of their own work, I’m always skeptical about taking my truck some where for major items...I had what seemed like a bad lifter tap, and sometimes a loud knock, in my Tahoe that would only happen after long trips...basic research showed that lifters failures were super common and with everything else that needed to be done, it was be better just to replace the heads...Peter @ Dalton’s auto quoted me about 3500 for all that but then took the time to ask specific question and the “how bout when’s.” after our convo he was convinced that lifter failure was probably not the issue, but oil sludge. He performed an internal chemical to remove what sludge he could. This weekend end I did a turn and burn trip to AL...4 hours to get there, 10 hours at a shop where my truck has to run for about half the time, then 4 hours back. All in the same day....ZERO issues....cranked it up this morning NO MORE NOISE...thanks peter and dalton automotive for looking out for me