Originally Posted by chris87xj
Try lubing your driveshaft slip joint.
Agreed, some new grease in the slip yoke is what I'm inclined to recommend as well. Prior to 96, the rear driveshaft's slip yoke was internally lubricated by the xfer case, but 96+ has an external one that will clunk if not regreased. Lots of guys pack it with anti-seize and never have a problem with it again.
1983 Chevy El Camino
1994 Cadillac Eldorado ETC
1996 Jeep Cherokee Country