like the title says, what fixed or helped your vibes. i would love to know because i am still unsure of what to do/use to fix mine. i have the typical 0-15mph vibes and am feeling some pulsating vibes 30-40mph. i know there are a few options, but what did you use that worked? or what have you tried that didn't work? i, and many others i'm sure, want to fix this. there are so many threads relating to it, but no real answers. i just don't want to buy or install the wrong thing, try to fix something that works fine, waste time/ money, etc. ultimately, a one piece drive shaft would be the best fix, but we can't all afford that. how did the carrier bearing drop work? what about shims? new u-joints? driveshaft packer kits? any combination of these? anything else that i'm missing that will work?
why exactly do we have this problem? or what is going on to make it vibrate? what other problems might we need to look out for if we are having these? are there other problems associated with this that need to be checked or fixed? are there harsh, long term effects to not fixing a vibration? is it going to harm my truck, or is it something that would be fine to overlook/get used to?
I know it's a lot of questions. but i've been reading threads for months now, trying to find good answers and discussions. but i'm done looking and asking for myself now. i have tried to talk to a few mechanics about some of this but they never know what i'm talking about. most of them work on chevys and fords all day and know very little about these trucks. so they are no help. i myself don't know a ton, just a few basics, so i need all the help i can get on here. thanks for the help.