Hi all, waking up this thread as I have the shake, more like horrible wobble in the back of the truck. Vibration leads all the way to the middle seat up front. Starts at 65mph with 20s & 305/55/20 and 74 with 18s and 275/70/18.
Anyhow. I purchased This helper leaf kit for the clamps and to see if the leaf helps or not. I am having larger plates for the u bolts made to help spread the clamping force a bit more.
If this works I will purchase two of these Deaver leaf springs. and be done with this wobble...
What not really shocking, but odd no one mentioned is gm never changed the leaf springs since 1999. That has to be my issue. I hope...