2024 LZO Leaking DEF

GrimReap3r · January 28

I got a whooping 85 miles on the truck when I was sitting at a light a noticed some smoke coming from the engine bay. I pulled over and could see fluid coming out a pretty good clip. I have an iDash so i knocked it to DEF level % and it was at 15% then and by the time I got another 3 miles towards the dealership it was at 0% and the service emissions warning had gone off. Anybody have any ideas what I'm looking at? The most hilarious part of this other than having 90 miles on it for its for trip to the Dealership is that I just traded my '21 LM2 in for the new one because my coolant control valve had to be replaced on the LM2 and it took like 8 weeks to come in so when I got it back I figured it was time for an upgrade to the LZO.

newdude · January 28

Sounds like the injector supply line popped off? Or the injector is loose and leaking.

GrimReap3r · January 30

My advisor told me yesterday that it was the DEF injector supply line. It wasn't "seated properly" but they got it reattached. He said it's "not throwing any codes" now but it still has the ~mileage until reduced power mode message. I'm a little confused at it not having any codes but still displaying the miles until reduced power mode. He said his tech is contacting GM on what he needs to do next.

GrimReap3r · February 6

They've replaced the DEF injector now and it's still "not throwing any codes" but it has the countdown to reduced power on the dash. Anybody got any ideas? I think I'm going to tell them that I'll pick it up and drive it to see if the countdown continues to go down or if it resets like I assume it would/should. I also wonder about popping the battery cable off for a minute to see if that resets anything but I getting frustrated at this point.