I've said this several times. It is the style of driveshaft Chevy and GMC use on these trucks that is causing the Chevy Shake. The large diameter, long, thin walled, aluminum driveshaft are inherent wobble queens. This is why each truck has a speed limiter at different speeds. Once the shaft starts vibrating they back off a couple mph/kph and set the limit. If you can't drive the truck fast enough to reach driveshaft critical speed, you won't trash the tranny like I did. Now for the other shakes at other speeds, they too are driveshaft related. I changed my driveshaft over to a two piece steel shaft and center carrier. It is on a 2017 LTZ 2WD Crew Cab. It is also made to 3/4 ton specs. Since installing it 12,000 miles ago I have had a smooth as silk truck that will cruise all day long at triple digits if you so choose. My cost was about $900 but that sure beat trading for another brand truck. All the road force balancing in the world will not fix these trucks. Only a new style driveshaft will do it! Mark my words.