NHTSA Complaint #11601633 — 2011 CHEVROLET SILVERADO 1500

I put my truck up on a 2 post lift to change the brakes. But once the full truck weight was on the lift the frame started to crack i instantly put it on the ground and took a look and found that there was a crack through the middle of my frame on the side facing me Spanning from the back part where it starts to go up all the way to about the part of the frame under the middle of the drivers door. Then I took a look under it and saw a large hole in the frame where the lift was placed. I proceeded to feel in the previously mentioned hole and found some of the frame was paper thin other parts where about half the thickness of a good part of the frame. After this I took it into my local GM dealer to take a look at it they said that the frame is definitely in a very bad shape but it will hold but it will be an issue in the future. I feel i could be put at risk because I could hit a bad part of road at some point in the future and it could damage the frame more or completely brake.