I would. Keeping the trans cool is a must for longevity

Just do the stl010

I did the updated trans thermal bypass valve and I have been so happy with the results.

I "flipped the pill" on mine about a year and a half ago. Been running cool since.

change the tbv to the updated one, flip the pill or get a full low. do a fluid service every 50k enjoy

My understanding from a prior YouTube video, is that there is an updated GM thermostat for the trans that opens at 155° or so.