To anyone facing similar issues and reading this thread in the future...my 2000 Blazer LS now has a custom access panel under the carpet and directly above the in-tank fuel pump. (right where GM should've put one originally!) I did this after first breaking all three brittle plastic nipples off of the pump while removing it without access to the top of the tank. PS - I was aware of how little play there is in the plastic lines and still did it!! After removing the tank from the vehicle and the broken stems from the lines I was able to clean them thouroughly with acetone, scuff them with sandpaper and carefully epoxy them back in place using 2 OZ/ft^2 (model airplane hobbyshop) fibreglass cut into strips and wrapped around the breaks for re-inforcement. $600 problem solved and stronger than it ever was - in addition, the access panel meant that I just had to raise the tank into place and then click click click the lines on with the tank in place. Next time, it will take me minutes instead of days to drop the tank. After lifting the carpet and measuring and marking, I drilled a hole in a corner and cut a rectangular access panel with a fine toothed hacksaw blade in my jigsaw. I didn't cut the patch completely out; I left one corner uncut so that I could just bend it back out of the way. In the end, I bent it shut and put a 3/8" bolt in the hole to hold it in place. Then I sealed it with silicone. Sounds funny, but I'm almost looking for an excuse to pull the tank now!
