OK fellas, I can't figure this one out. I recently got my blazer back from the shop, (broken distributor bolt, don't ask), and when I went to pick it up, it cranked right over, no big deal. So I drove it home and parked it for a few days, because it's not inspected and I need to do some stuff to it, anyways, I went back out to start it about 3 days after I picked it up and nothing. No click, no sputter, no nothing. So I figure I must have left on the headlights on or something, try to jump it and still nothing. So, I try to use my fancy-shmacny PW "Hot-Shot Plus" bump over starter relay, still nothing. I have never had any issues with any of these things before. So finally I try to short across the starter solenoid and jump it started like that, and it sounds like the drive gear is just spinning and not engaging the flywheel. I have a Tilton high torque mini-starter. Well, I had recently rebuilt this starter and I just thought instead of messing with it again I'd just get an Autozone special, get my truck running and fix the "good" starter later. So I put the new one on and it does the same damned thing. This is where you guys come in. I'm wondering if there is something else wrong with the wiring or my hook-up. 350 engine, th350 tranny, I have an optima red-top battery, that's currently dead and in it's place temporarily is the NAPA cheapo special. I'm wondering if there might be a bad ground or something that I haven't thought of. What's weird to me though is that the key switch or the relay switch, both aren't working. I'm just about to pull out my hair, and I'm hoping somebody can help me out. Thanks, sorry so long, Buddy 72 K-5, 33x12.5's, 350/350/205,12-bR,d44F soon to be 39.5'x15.5s, EFI502/nv4500/doubler205, d60F, d70R. Stay tuned.