6L80E additives

[LoganBryant58]

I have a 2017 Silverado that has a very light transmission shudder going uphill. Shifts fine, no hard shifts at all, and only shudders going up hill, and it is very light. Has 82k miles on it, and the fluid and filter were changed at 72k. Added the thermal bypass at the same time. When I changed the fluid, I was shocked by how little material was on the magnet. So that brings me to the question of should I add a lubegard additive or not to this? Either platinum or red? Some people say it works well, and others say to not add anything else. 

[rav3]

I'll throw  my .02 cents in.

I have a '17 LTZ with 6l80e. GM programs these transmissions to let the torque converter slip & lock up at lower speeds & in lower gears. My truck would feel like a shutter or miss, due to this programed slip & lock up and to compound this, the AFM (DOD) is another issue. I had my transmission tuned via HP Tuning & it drives like a different truck. The eliminate the slip, the lock-up & DOD. They did a torque matching between engine & transmission (not sure what this does) and changed the shifting points & increased throttle response. I had a Range AFM delete & a throttle commander & the tune eliminated both.

As I'm sure some will comment that your TC is toast but I highly recommend a tune.

I also change my ATF often via ducking it out the ATF dip stick tube. Much easier than pan drop.

Just my opinion!