I'm aware but being a 2017 it is most likely a DT12 which doesn't have a greasable throw out bearing
Pull the cross member or put a jack in between leaf and frame
pull the grounds off the MGJB (driver side on fire wall) and clean the eyelets and the gnd bar. If it still happens, Check pins on stalk switch...
He said it was AT trans? Pull your delta p sensor. Check venturi ports for soot build up/plugging.
Does it still say 917?
Pull the mixer pipe (going into intake elbow) and see if it's wet for egr cooler. As previously said. 13mm, 4 bolts, then either a 7mm or 8mm for...
40% or more is considered less than optimal per Detroit. You also want to look at your average drive load. Above 30% is considered optimal.
Doubtful. In my experience older trucks just do that. Might be style of chambers you have
