So I'm trying to gain more knowledge with tuning 6l80s and have made on observation that doesn't make much sense to me. I've got a 2009 G8 and a 2015 Sierra, both with a 6l80. Internally they should be pretty much the exact same, I know there have been a couple part updates/upgrades but clutch packs and such are exactly the same. So why are the oncoming volume presets so drastically different.
G8 Sierra
1-2 = 60 24
2-3 = 21.5 24
3-4 = 30 29
4-5 = 18 24
5-6 = 50 25
There are min volumes on the Sierra while the G8 is just zeroed out. Can anyone give me an idiots guide explanation on why this is or how it makes sense. I searched a number of different ways but no one has brought this up before from what I can see.
Thanks in advance for sharing!