VIBRATION ON TAKE OFF on 2000 Chevrolet Silverado 2500

IT HAS A VIBRATION ON TAKE OFF UP TO ABOUT 15 MPH THEN QUITS I WAS TOLD IT IS CALLED A LAUNCH SHUDDER,WHEN TOWING SOMETHING IT IS WORSE,HAVE HAD NEW U-JOINTS,CARRIER BEARING,BALANCED AND STRAIGHTNED DRIVESHAFT,DID NOT FIX,COULD IT BE MY TORQUE CONVERTER. 2000 CHEVY SILVERADO 4X4 EXT.CAB/LONGBED/6.0 GAS AUTO

by in West Plains, MO on July 01, 2010
1 answer
ANSWER by on September 04, 2010
Get someone to press on gas while applying brake. Keep rpms around 1k... Give or take a few. Now check underneath truck and check exhaust. Mine is doing same thing. Vibrates like a mother*******!