Trying to remove battery on 2007 Grand Prix GXP (5.3V8). Removed the strut cross brace, battery wires, battery tie down strap, and loosened the fuse box. Can't seem to get enough movement in the fuse box to allow the battery to clear. Even had the battery turned on end. I'm concerned about pulling too hard on all those wires. Is there anyway to disassemble the fuse box or at least disconnect one of the wiring harnesses to get the fuse box to move farther out of the way?