I installed my new carbonfiber driveshaft yesterday. My tink is definitly gone,and my shifting seems just a little smoother through the shift knob. True test will be a nice little drive to Savana next week. See you there.
Try to get the newest (3rd part number) dirveshaft version now being provided under warranty by Chevrolet. I think a search under "driveshaft" will probably locate it.
If Chevy replaces enough of them, maybe they will start replacing with a carbon fiber one.
Don't laught. Carbon fiber shafts are standard equipment on a number of both domestic and foreign vehicles being sold here in the U.S. The manufactuerer's cost is not on the same planet as what WE pay aftermarket for a carbon fiber shaft.