Truck cranks but will not start.

Do you mean crankshaft position sensor? Manual states it's on MPFI systems only. I have a carb'd system. Could it be the ASD relay?

I cannot find all components to the ignition, so that would lead me to believe you are correct about the module being integrated in the computer. So, would it be best to replace the whole computer? In other words, even though the ignition module is integrated in the computer, is it still a separate module, could I possibly get away with installing a whole new ignition?

Ok, new development. I installed a mechanical ignition system, to include points distributor. In my mind this would take the computer completely out of the loop. I get fuel to the carb, so fuel pump is working. I now have fire at the coil, but no spark from distributor cap? Nothing in the distributor seems to be grounded out for the spark to just disappear. Still a computer issue? If so, what else does the computer control regarding the ignition system?

Distributor is turning. Brand new rotor, although, I will try another one. I'm thinking ground issue, but can't seem to find anything grounding out that shouldn't be. With the key "on" but not running when I manually open the point I get a spark at the point which tells me the point works. Could it be a bad condensor? Also, I feel like this is a silly question, but the orientation of a points dist. Vs. The Hall effect dist. Should be the same right? In other words, speaking in extremes, this distributor wouldn't need to be oriented up to 180 degrees the other way or anything would it? Starting from TDC the rotor should always point roughly to plug #1?