08/31/2026
18 Sierra got a fresh 6L80 with a dual clutch LUK converter. Installed a Mishimoto transmission cooler at the same time. Turned off TCC until 5th and 6th gear, did a retune on the transmission due to some downshifting dead zones with some massive differences in driving. Also got a new drivers motor mount, as well as a fresh condenser to keep that AC rockin'.
Thanks again for the support from a long time friend Steven Henon.