AbnormalAviator

Hello everybody, I'm new here, but soon to have plenty of questions. First off, however: my 2016 6L80 tranny just turned 70,000 km's (43,000 miles) - I have every intention of putting a Sonnax Zip Kit to boost shift pressure etc. Keeping in mind I run my truck offroad on 32.5"'s regularly, and I'd like it to survive as long as possible, including future 35's. My powertrain warranty is up in two years, which will likely mean about 100,000kms/60,000 miles; I intend to install the sonnax kit in parallel with an i3 tuner (hard shift setting) and 4.56 gears, which should all help the tranny in the long run. In my experience...learned mostly the hard way...such kits are only beneficial if used while the transmission is healthy. The question is: is 100,000km too late to put a zip kit in, or is it worth the risk to have it put in ASAP? Short term risk-long term reward considerations here.

I have a 2016 GMC 1500 4x4 L83 work truck custom (bare bones with rubber floors) with a 6L80, G80 at 3.42, with a mechanical transfer case. At present, it has the RC 2.5" level kit and BFG 32.5" KO2's - apart from that and the bedliner, she is stock until the warranty is up next year. Starting this year, a 4 phase plan will roll out to build a great BC expedition rig that remains practical for daily driving...by my standards at least. Phase 1 - Cosmetics/non-warranty violators, commencing as soon as debt/wife allows. - Black Raptor bedliner full body paintjob - CB radio and antenna - Thule or similar no-drill roof rack - Homemade tube bumpers with quick-swap winch mounts between front and back and lower body exo cage (designs are WIP) - 12,000lb nylon winch (Smittybilt X20 seems reasonably priced, but I am an open minded opportunist) - Undercover swing boxes...maybe. Phase 2 - Performance/reliability/quality of life upgrades. - Kenwood double DIN deck, or equivalent system - Diablo i3 Tuner - Muffler delete (keep the resonator) - Air Raid 200-543 throttle spacer - Air Raid 200-285 intake - Sonnax 6L80 zip kit - Yukon 4.56 gears Phase 3 - Endgame - Rough Country 7" bracket lift w/front and rear Vertex coilovers...BDS's 6" coilover kit seems like the extra $1,000USD that broke the camel's back, but we shall see... - US Wheel Crawler Stealth 17x9" wheels - BFG KO2 35x12.5" tires It will take some time, to say the least.