OH4CompG - Are you talking about the front or rear calipers? Front go sideways; For the rear - one bleeder is pointing up and one is pointing down. Switching them will still end up w/ one pointing up and one pointing down. I had never heard of that before - that they both had to be pointing up; is that something specific for GP? I know I purchased the correct calipers, so I am a bit puzzled. I had a neighbor over last night who works at a Chevy/GM Dealership, we ruled out the booster as being an issue but even he was at a a loss since there's no air in the lines (bled everything for about the 50th time!) and no leaks. Thanks to everyone for their advice so far, any additional comments/advice are appreciated as well, I'll take anything I can get!!!!
