I have an '82 K5 6.2 Deisel.. I was recently having trouble getting the starter to engage when i cranked the key. Finally, it stopped turning over. I thought the ignition solenoid had gone out, so I replaced it.. It still wont turn over. I pulled the starter and had a shop check it, and it works fine. My glow plugs turn on, but I get nothing when I crank the key to the start position.. I'm hoping someone has an idea..