My stepson just phoned and said that while chasing a brake fluid leak, he found that the frame of his 2014 Sierra has a large hole in it under the cab drivers side (see photo). He said that he found another weak spot on the passenger side, also. He and his wife live up around the Anderson area, and I was wondering if there was any recommendations on frame repair shops up around there. There was evidently a recall for frame corrosion, so he's going to talk to the dealer about that, but I'd like to have some places to give him if it's not covered. Thanks.