New guy here so take it easy on me. Have a question and can't seem to find the answer. I've searched for similar problems issues with no luck. I have an 03 crew cab 4x4 with what seems to be a rear end slip/clunk at random times. I doesn't seem to happen taking off or stopping like a slip yoke issue. Mine is more random at highway speeds. RPM's stay consistent but there's a brief skip/slip from what seems to be the driveline. Not real sure if it's coming from transfer case or rear end. Both have been serviced recently but didn't seem to solve the issue. Any suggestions would be appreciated. I've thought maybe it's the transfer case slipping briefly but hate to tear it down for no reason.