2005 Silverado Z71 ECSB, 100+k miles. I have lubed the thing several years ago that solved it but now it's back and lube is no help.
It may be something else.
Do these things get so bad lubed splines is no help? Regardless I ordered the nickle yoke w/u-joint and a new rear u-joint because of the mileage and a long shot..

It sounds like its coming from under the passenger side front floor board. I can make it repeat by accelerating and braking.

Thanks

 

You can try taking it to a driveshaft shop and have them replace the yoke. probably wont be that much. my factory shaft did that too.

 

Alotta times, the clunk is because of play in the rear end. (no, not THAT kind of play) Which in turn is usually caused by wore-out pinion bearings. NOT the gears themselves; just, the bearings.

 

Thanks,
I can change the Yoke out and will this weekend and see if the clunk is gone.
If its differential work I'll just swap her out to a trutrack. That G80 behind my Radix has to be getting tired.

 

There was a bulletin about a number of yokes that were not machined correctly from the factory. That is why I mentioned it!

 

Thanks, I'll report on the new yoke and joints results this weekend.