I finally got around to replacing the factory fuel pump today on the 2000 Silverado. Been having fuel pick up issues when at a quarter tank. To my surprise, a red rag was wrapped around the fuel sending unit float, and the fuel pickup sock was clogged with cloth fibers. I am the original owner, and the pump has never been replaced before. This had to be from the factory because the rag was smashed under the fuel pump which is spring loaded to the bottom of the tank, it coulod not have worked it's way under there. This may explain other driveability issues I have had. While under warrantee it went back to the dealer many times for rough running and lack of power but they always blew it off as "operating as designed". This is one of the reasons I will never purchase another gm vehicle. I am new to posting pictures so I hope they show up, or the link.