I have a 1996 Chevy Blazer, 137,000 miles, 4.7l engine, auto trans, 4wd and am experiencing a fuel line leak. One of the lines has already been replaced, prior to my purchase, and there is another leak. I am looking for a diagram that shows me which line is which running along the frame. I need to replace another line and want to make sure I am replacing the right one. Any help or advice would be appreciated.