350 3/4 ton starter issue

I have a 93' 3/4 ton Silverado 4x4 with 182k miles on it, that won't start, won't even turn-over. Its a 350 engine with standard trans. Put a new starter in 6 months ago so I don't think that is the issue. All dash lights come on when I turn on the key, horn and radio are working find. Charged the battery overnight have 100% charge and still have the same same issue. Checked all the connections, seem tight. I did see one post on this group that said check the switch under the clutch and adjust it if needed. The truck has been acting up a bit, won't do anything but click when I hit the ignition until I pump the clutch and shift it through a couple of gears. I think the switch under the clutch would be the next place to look but the truck is broke down over at a friends house so I thought I would pose this question here hoping for any other trouble shooting thoughts. Any ideas?