Hi everybody, Im new to this forum page and have not really been involved in a forum page before so bare with me as I navigate this site lol. Anyways, I have a 2019 Chevy with the duramax that i bought in May, so far I have put 17,500 miles on it with ZERO issues. Love the truck! Today i was nearing the end of my trip and my first engine light came on, I plugged in my OBD scanner and pulled up a P1089 code, the description said "Please refer to vehicle service manual!". I looked in every book i got with the dealer but couldnt find anything... its possible i missed it? But after a google search as well I couldnt find any specific posts regarding my engine with that code. Some of the larger duramaxs relate that code to a low fuel rail pressure or something like that. Cant quiet remember... Any ways, was hoping someone on here may have had the similar code or might know what it is before I call up the Demon Dealer? Thanks in advance!