I've replaced drivers side half shaft year ago with A1 Cardone unit which failed after a year minus 5 days. Started to vibrate under accel and made this metallic clunk when going from drive to reverse and vice versa. So I sent it back - lifetime warranty, no more vibration but the clunk is still there. Could it be the new half shaft is garbage or...is my trans starting to act up? It has zero issues as far as shifting/slipping, fluid is nice and red no funky smell or anything.