I have a 2017 RTL 2G and at 33K a message showed up in the dash "emissions system problem". When the dealer look at it they said there is a fuel injector thats not functioning correctly and need to change all of them including the pipe. They said since the truck is below 36K the warranty is still in effect. It took the dealer 2.5 hrs to change it and now it runs like a champ. My point is, how come this happen? glad that i have extended warranty on the top of the manufacturers warranty up to 120K if not this will cost about $800 plus to repair. What a crap!