pokismoki

just a cheap shot in the dark... reflash the engine ECM with stock tune file. assuming you did a tune . but i would erase it and start fresh, wether its tuned or not. i remmember when my truck was newish 10K miles i would get some lights flash on the dash, stability control error message. i ignored it, seems to have went away and no CEL codes on her

want to sell the rubber floor?

sounds like its fuel and ECU fuel mapping tuning issues, try a different engine tune file, might even try the stock OE engine tune file. see what happens

GM dealer will make more $$$ selling your truck on the used lot after they clear all the troubles with it. there is no profit in the new models.

any misfire symtoms yet on the plugs or injectors? what mods where done to the trans tune? what gears lock TCC in? is it stock converter or aftermarket? have you tried the trans re-learn, trans-clean, clear adapts, or trans purge with a GM technitians tool using GM protocalls?

welcome to GM products! : ) You shoulda bought a MBZ G Wagon look at this SH**

https://vidmax.com/video/142950-caught-on-cam-passenger-ejected-on-high-speed-chase-by-police

the older i get the more this looks like a mistake, Lady Luck doesn't seem to be riding with me as much as I like these days. and the KIds on the road drive ridiculously, no one stops at intersections with stop signs. i seen too many crash scenes where people got t-boned on passenger side, only to get ejected out the drivers window, getting head smacked on the street and launched 200 feet from car usually isnt a walkaway and dust off event! permanent damage!

monitor has the VHS tape upgrade, is all good

reoprt it stolen, then set it on fire under an overpass in the ghetto 20 miles from your house...lol. if you want it to function normally, call the guys at EFI live and pay them to remotely tune it and disable all emmission equiptment. then you'll be a happy camper

have you tried doing a trans reset, and re-learn to see if it clears any issues? there is also trans purge and trans clean function , they might help blow out any hiccups

have you guys try disabling the TCC completly to test if this is the issue in the converter?

what trans and gear ratio you got in there?

yesterday I did a DoD deactivation on my truck via HPtuners, very simple 1 switch flip and its all v8 all the time. before this I was getting 14.5 mpg the previous week with DoD active. these past 2 days my mpg gauge is reading a full 1.5 mpg gain on v8 city driving now i also did go into the trans and removed as much slip from the clutches, so this might also be where i gained mpg so I'm now at a solid 16 mpg all day in the city ,while burning 91 octane..another benefit igained from removing the slipping clutches was a full 10 degree drop in trans temp. use to be 145 F, now I'm at 130 F degrees driving all day

i think the oe 6l80 converter is fine , as long as you reprogram the tcc functions in the tcm. GM meeting MPG goals and emmissions ratings is almost a death sentence before you get 100K miles on a 6l80