Posted by Vaughn [172.68.141.193] on Wednesday, April 14, 2021 at 09:14:00 :
If you are experiencing vibration, you can do a couple of things. 1. - see Client's Service Bulletin post under transfer case mount posted below, 2. - Purchase an inexpensive driveshaft angle finder and read article on measuring driveshaft angles - see link. You can check your truck's driveshaft by pulling one of the rear axles out past the diffs side gear so you can rotate the driveshaft.
To correct you can shim the axle housing perches, or weld new perches, or add washers between the TC cross-member and front or rear insulators.