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Re: 2013 GMC 3500HD- NOx sensor problem
Posted to Technical Discussion Forum on 7/18/2019

Exactly Brad. Just when you get used to how it works, it changes for the next MY!

I don't know who thought it was a good idea to mount the DEF injector where it is on the 2019 L5P with that silly clamp with the spring inside.

I read that they moved the DEF... Login to read more.