8l90 can it ever be fixed ?

Rme2513 · May 10, 2018

I have a 2015 6.2 with the 8 speed with 58k miles I have had a new transmission put

in then a stator shaft recall done then a new torque converter and now once again the shutter is coming back seams like they just throw parts at it until the warranty runs out. Also wen the engine is in V4 mode around 40 mph the valves sound like there about to come apart but no problems yet with that. Has anyone had this much trouble and any luck with a fix I read on another form that they went to a mobile 1 fluid and it helped a lot. I wonder what a new converter and flush is going to cost me after the warranty runs out?

Not1lost · October 4, 2018

Took my 2017 GMC Canyon to the dealer for a shudder and shake at cruising speeds two times, balancing the tires etc. knowing it was the transmission. finally had the service manager ride with me and showed him what it was doing. said it needed a triple transmission fluid flush but if that didn’t fix it would replace the torque converter. I said why not go ahead and replace it? if you know it will fix it? anyway, third visit to get the flush done. while sitting in the lobby with my lemon law book out in a short while the service manager came out and said they had an update from GM to go ahead and replace the torque converter ! hmmm... so they had it about a week doing that. they did give me a brand new 2019 very nice suv to drive in the mean time; that was nice of them I will say. So now Ive driven it about 700 miles and it is smooth so far... What concerns me is what damage did driving the truck 14,000 miles with the wrong transmission fluid in it and the torque converter going out do to the rest of the transmission? that probably won't show up till it's out of warranty! this was my last new truck as I am retired now and on a fixed budget and will not be able to afford a new transmission later on down the road... even if it seems like it is fixed it is hard to trust it; I don’t know what I should do...