spongjim5

The ONLY WAY you are going to get rid of this problem is to get rid of the truck . GM is not going to fix it and ITS NOT THE TIRES !!!! Stop looking for it there . I worked for a GM dealership for twenty something years and gm left me high and dry on this problem also three years ago . I was assured that they were going to fix the problem by a district rep .( LYING POS) Was told to not worry about it when I was in hospital fighting for my life with cancer, and found out the truck was never moved and never worked on during this time. Gm knows there is a problem with these trucks and they know they cant fix it and have NO plans on doing anything about it . I no longer work for them and WILL NEVER BUY ANOTHER GM P.O.S. I have a new DODGE 2500 Ram and love it . My old truck was traded in and sold and I heard it has been in and out of the shop numerous times since new owner bought it , for the vibration at 72 mph that GM says is normal operation for a sixty two thousand dollar 3500 dually . Stop fighting the battle and stop buying their products .

hawkjr

I have the same vibration issue with my 2000 Silverado. Had alignment and tires balanced. Getting a new set of tires in a couple of months hopefully vibration will go away. Had similar issues with my Vette got an alignment and balance fixed the problem.

The Texan

I just came across an interesting phenomenon with my 2011 and the vibration. I have 32K on the truck and have had a Bak Flip cover on the bed since day one. Had to run a couple days without the cover last week and guess what, I got the vibration, with NO cargo, at highway speeds. Put a medium height load in the bed or put the cover back on and the vibration went away. I am now wondering is the vibration is not a wind turbulence against the tailgate at highway speeds? At least it is food for thought.

El Coqui

The problem with my vehicle turned out to be the Torque Converter. Running smoother now.

Hank

pilot5t6

I have the same issue. 2010 Silverado Z71. I get a vibration in the middle to rear of truck between 30-55mph. I have new balanced tires. This is disappointing.