TRNW-2: 9T65

[Brett Karulak]

We have a 2018 Traverse 3.0 AWD and it has a pretty severe shudder from
tc.  We attempted a service and shudder additive and it did help when
cruising in high gears but not between shifts after 3rd i think.  If you
throttle it in 8th or 9th it will unlock and then shudder slightly back
down to zero slip speed. I did go through a relearn just to see if it would
help anything and it didn't.  Anyways the customer knew this was a patch
test and it failed.  Outside of tc shudder, the trans seems to work
properly, the fluid was black but not burnt, and the vehicle has 136k on
it.  I was wondering if any of you have attempted a tc replacement only or
too risky with these miles?  I haven't been in a 9T but looks similar to a
6t40 i think.  I priced a gm unit and this one is pricey, the last 9t45 i
did was super cheap and i replaced that one but since its a 9t65 i guess
these are more expensive.  HP tuners doesn't have anything for these yet, i
think if it only locked up in 8th and 9th the customer would drive it
unitl it breaks but no way to re-map this one yet.

Brett Karulak
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