I have a 2015 suburban with a 6l80. When I bought it there was some TQ converter shudder. I found out that the factory tune allowed 200+ rpm slip in the converter. I went in and turned all the sub-tables to not allow it to slip. I hope this buys me some time to save up to have the transmission rebuilt. Have you ever done this or seen it done?
Man I have a 2011 gmc sierra with I’m assuming the 6l80 I can be driving and just goes to nutrual. I can reset with my scanner even if no code shown and it will drive again for awhile ? Can u tell me wassup with that
Sounds like the converter has failed. The transmission will work until the filter gets clogged. If you drop the pan and find metal debris it’s time for a rebuild.