I've seen a number of people here talk about rebuilding and/or updating parts of their 6L80, automatic transmissions are one of the few things I don't know a lot about. I bought my 2008 thinking it was going to need a transmission and I ended up replacing the filter and resetting the adapts and have been driving it for 4 years. It has never shifted super nice even after having it tuned and with 157k on it I've been considering replacing or rebuilding it as preventative maintenance. I know there are some updated seals and other parts that came in 2009 (IIRC) and I've seen some people use Sonnax's Zip Kit which looks like something I'd be interested in but I can't seem to find a good list of the parts that would need to be replaced to upgrade this transmission. I don't know if I should just buy the Zip kit and then order a GM seal kit and clutches for my year and go with that or order Sonnax upgraded parts but I don't know what I need. I don't know if I should go ahead and replace the TEHCM or just buy the rebuild kit Sonnax sells for it.
I've also seen a lot of talk about an "upgraded" torque converter but haven't really seen where people are getting these from. I do NOT want an aftermarket converter. I put a Yank 3200 stall in my TBSS because the TBSS forum said it was a "must have" and I absolutely HATED it and I will never do that again. I might be ok with a slightly higher stall but I want it to be able to function exactly like the stock converter. Seems like the CTS-V/ZL1 torque converter may fit the bill but I'm not sure if the flex plate needs to be changed also. I don't tow much but I still want to be able to tow if needed. I also would be interested in doing a torque converter in my 2013 to prevent failure. I saw a thread Doubeleive started about torque converters I'll read through as well.
Lastly, will tuning be needed for any of these things? Specifically, the torque converter with a different stall?
I've also seen a lot of talk about an "upgraded" torque converter but haven't really seen where people are getting these from. I do NOT want an aftermarket converter. I put a Yank 3200 stall in my TBSS because the TBSS forum said it was a "must have" and I absolutely HATED it and I will never do that again. I might be ok with a slightly higher stall but I want it to be able to function exactly like the stock converter. Seems like the CTS-V/ZL1 torque converter may fit the bill but I'm not sure if the flex plate needs to be changed also. I don't tow much but I still want to be able to tow if needed. I also would be interested in doing a torque converter in my 2013 to prevent failure. I saw a thread Doubeleive started about torque converters I'll read through as well.
Lastly, will tuning be needed for any of these things? Specifically, the torque converter with a different stall?