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I have the same one that I purchased through a local Indy transmission shop. I believe Summit carries them also.
Nick i have a 2011 tahoe 72000 miles shift fines ,serviced trans at 50000 when i got it, just got a tune with lockup 1-4 out some tcc slip ajustments made and afm disabled, and ecm tuned also before i heard about these tunes i was going to get a precision of new hampshire billet cover converter as a proactive measure , but now with the tune it shifts so nice (not that i had a problem before ) I'm thinking about letting it ride and service every 30000, whats your thoughts about the proactive converter change????????????Definitely agree with replacing the converter at 125k or so regardless of whether its working well or not as they are ticking time bombs…Did you upgrade the converter clutch to the thicker version’s available (.045 or .066) and have a billet cover installed?
Here’s some info on those JMBX converters:
Gears Magazine - Flex & Bend - A Look at the 6L80/90 JMBX Torque Converter
The GM 6L series transmission is quickly becoming the most popular attraction in the shop. As we all know, this unit is plagued by a handful of common issues, such as pressure switch filament cracking, 35R drum breakage, 1234 piston cracks, valve/bore wear, and converter failures. The drum...gearsmagazine.com
I didnt do anything yet , will probably change converter well before 100.000 got 72,000 now, what your thought on precision of new hampshire converters or what do you use?
I'd swap to a better converter sooner rather than later. Obtain one that comes with a .070 thick Borg Warner high energy clutch installed and you'll be good....Billet cover and/or flanged hubs add strength but not really needed for a daily driven, otherwise factory vehicle.
