OK, so it all started when I heard the click and the crew would not start several days ago. Used a screw driver to jump the starter solenoid and it fired right up. Ordered two new "Amazon" starter solenoids (just in case). First one would not work. Tried the second one and the crew fired right up. Problem solved???? Not! Third attempt to start would not work thus I tried the screwdriver jump again. Would not work. It was dark so I assumed battery was low. Towed the crew home and tried the screw driver jump the next morning. Big arc but no start. Pulled the starter out, took it apart and cleaned it. Bench tested it and it spins like new. Re-installed the starter and tried to jump start with screw driver. No luck.

Other things I’ve done: I’ve checked the codes and Error code 22 displays. "Short to ground" or "Battery short". 4 position Fuse panel test 9.5 volts at the top fuse, 0 volts at #2, 12.5 at #3 and 12.5 at #4. This seems very weird.
I have tried pulling the negative lead off the battery and using a 12v test light to determine if there is a short but no light. Seems I must have a short somewhere but the test light to battery terminal (+ or -) shows no light. Thus no short? How can the starter perform a bench test just fine but when it is hooked up only to the battery wires (+ and -) at the rear seat location (but not actually placed in the starter hole) it will not operate? Also big arch when using battery jumper cables again leading me to believe there is a short somewhere.
Any ideas or suggestions. Very frustrated at this point.