Not sure what yryour is but here is my story I have had my trk in the dealership several times they first said it was drive line issues and replaced rear propeller shaft no change, 2nd' 3rd, 4th time said tire issue they force road balanced several times no change I changed tires out 3 times no change 5th, said no issues found B.S, 6th time asked for service manager to ride along he acknowledged vibration said he would not give up and to let him research and he would call me, 7th time he said that GM said to take off stock running boards and put 6bags of concrete in bed they did and no change also took tires and rims off a 2013 on lot still no change in excessive vibration service manager said be patient that he would continue to research and that he drove a 2013 and he stated it had more vibration that mine as if that make it OK I finally contacted the BBB and awaiting a resolution all I know is I spent 370000 for a new trk and got a defective trk also they have never really addressed the rough shifting when trans down shifts but I see there are others that seem to have the same issues with the excessive vibration and hard down shifting not sure what the outcome will be but GM needs to make it right has anyone have any guidance on how to start a class action against GM at this point I am interested due to the fact GM needs be held accountable for the quality of trk they are selling to people.

2012 Silverado US Army

 

I have had my trk in the dealership several times they first said it was drive line issues and replaced rear propeller shaft no change, 2nd' 3rd, 4th time said tire issue they force road balanced several times no change I changed tires out 3 times no change 5th, said no issues found B.S, 6th time asked for service manager to ride along he acknowledged vibration said he would not give up and to let him research and he would call me, 7th time he said that GM said to take off stock running boards and put 6bags of concrete in bed they did and no change also took tires and rims off a 2013 on lot still no change in excessive vibration service manager said be patient that he would continue to research and that he drove a 2013 and he stated it had more vibration that mine as if that make it OK I finally contacted the BBB and awaiting a resolution all I know is I spent 370000 for a new trk and got a defective trk also they have never really addressed the rough shifting when trans down shifts but I see there are others that seem to have the same issues with the excessive vibration and hard down shifting not sure what the outcome will be but GM needs to make it right has anyone have any guidance on how to start a class action against GM at this point I am interested due to the fact GM needs be held accountable for the quality of trk they are selling to people.

2012 Silverado US Army

 

I purchased a 2012 Silverado ext cab 4x4 z71 and at 6000 miles I contacted Mr Louis he recommended I have trk checked out buy a dealer I have had my trk in the dealership several times they first said it was drive line issues and replaced rear propeller shaft no change, 2nd' 3rd, 4th time said tire issue they force road balanced several times no change I changed tires out 3 times no change 5th, said no issues found B.S, 6th time asked for service manager to ride along he acknowledged vibration said he would not give up and to let him research and he would call me, 7th time he said that GM saiake off stock running boards and put 6bags of concrete in bed they did and no change also took tires and rims off a 2013 on lot still no change in excessive vibration service manager said be patient that he would continue to research and that he drove a 2013 and he stated it had more vibration that mine as if that make it OK I finally contacted the BBB and awaiting a resolution all I know is I spent 370000 for a new trk and got a defective trk also they have never really addressed the rough shifting when trans down shifts but I see there are others that seem to have the same issues with the excessive vibration and hard down shifting not sure what the outcome will be but GM needs to make it right has anyone have any guidance on how to start a class action against GM at this point I am interested due to the fact GM needs be held accountable for the quality of trk they are selling to people.

I became a GM buyer in 1994 and have owned several silverado's with the last 5 being brand new and this has by far has been the worse purchase my older chevy trks with over100000
miles drove smoother I hope that this is not the new GM standard of business or quality of vehicles it is going to sell American.
2012 Silverado
US Army

 

Just a little update to a past post, we still experienced a vibration months after they had our truck at the dealer. Just some info double check your front caliper bolt slides ours were frozen causing the right side pull to the right and we beliave to be the problem all along. We only discovered this recently while hearing a brake squeal from the front left and noticed the slides were totally frozen. Advise to all to change to new pads and a complete slide bolts and bushing kits.