Appreciate the replies!
I had one on my old '07 Dmax, with a pump, without any issues at all. I even plumbed it in through the vent tube instead of the actual filler neck. I just wanted to make sure everything was still legit.
jake111: I never got any "insanity" codes or anything running down the road while filling. That's what I was hoping not to happen with the new trucks either. Looks like the other guys are doing fine with it. I'll keep my fingers crossed. Looks like cwq21 was having this "sanity" issue on his '03.
2019 L5P Duramax - 3500HD All-Terrain SRW
"The world is run by those who show up"
"It was the most I ever threw up, and it changed my life forever."
"If Moo-Shu fits, wear it."