I have the same issue here as well. 2018 Big Horn, 143250km Deleted and stage 2 tuning (EGR Not deleted) this week, and then, 200km later, "Service Electronic Throttle Control" (NO MIL). No codes. No power when stepping on the gas but it moves, not in total limp mode. I've been reading the forums for hours before working on the truck, it's too coincidental for it not to be tune-related. I did end up cutting all the sensors from after turbo to the muffler since they aren't necessary anymore (I tried to save them but the connections are near impossible to get to and the tune is supposed to cut all power to those connections making it seem like they never existed so it can't be that, right?) Some say the battery or EGT#1 sensor before turbo or MAP sensor and EGR tube, (mine were cleaned Sept 19 less than 5000km ago when I had my first engine light on) I decided to delete it because a few weeks ago I got another engine code, Bank 1 Sensor 3, I tried to replace the sensor but I broke it, I didn't want to bring it to the dealer, probably would've cost the same as the delete anyway (and the truck ran amazing for that 200 km, but it does stink :/
So TC Diesel, are you saying that the tune would need something added to it, and then we would need to re-flash or ECU with the updated tune from the people that gave us the tune?
PS...While writing this the guy I got the Tune from emailed me back saying the tuning wouldn't do that. Unless the MAP and ERG tube got filthy again in less than 5000km. When I got the engine code in September, I didn't get the SETC message. We'll see tonight
