GM 6L80 Transmission Information Thread

[NickTransmissions]

6l80 here (2010 Tahoe LTZ). Have heard from a lot of folks (including a few on here) that 30-35k is the severe schedule that we should be sticking to on these transmissions.

For me, that's about once a year, lol. Is it your opinion that it could probably go another 20k each cycle and be fine?

The figures in the post you quoted was for daily drivers, crusiers and mild performance applications. HD/Serious work, severe off-road, HP/SS, full race and other non stock applications will require more frequent fluid changes, common sense right?

If your usage pattern fits the above, every 30-50k somewhere in there is recommended. More severe the duty, more frequent the fluid service.