Use a mirror and a good flashlight to get a good look at the rubber boot on your turbo inlet. I’ve had about 10 DTC’s pop up one morning from a loose hose clamp. Pushed it back in place and tightened it up, all issues went away instantly.
Delete the EGR. Do a 60 hp tune through a reputable source. Get a transmission tune. If you’re a grease monkey like me, look into a full BG flush process. Many of the folks on here lose oil pressure and never get it back. I did. Full cleaning with fresh oil 2X with BG, including removing and...
Service Electronic Throttle is a generic code for these trucks. A very common issue is the connection with cabling underneath the truck below the driver’s seat. It is along the rail. Disconnect your battery, open up that connection and put dialectic grease on the connections. Another issue is...