My Sierra died, no spark at all, HELP.

Ok here's what happened, driving down the freeway and she sputtered, and coughed but came back to life, an hour later driving on surface streets she died, just died, towed her to a safe place to work on and after a few checks I found no spark nothing from the plugs, then checking further nothing from the coil, just put in a new accel about 3 weeks ago and figured I got a bad one so I went and bought a new msd, no go, at this point I have not had a chance to get my tools over there but a spare bulb with wires attached showed that I have at least some power to the coil with the key in the on position from the thick white wire, it is a two connector remote mount style coil, two smaller wires 1 pinkish 1 white, then 2 thick wires 1 white(has power but unknown voltage) then 1 pinkish no power, I have to gather up my tools and check things out deeper tomorrow but I was hoping I could get some input from the knowledgable people on here before I start out to go investagate tomorrow, cant afford to lose the days pay to go take care of this tomorrow but my truck is part of my job so if she don't go I can't go, after looking through my chiltons I guess I have to lean tword the ignition module, but my book is pretty sketchy on this area, and I hate to just start throwing parts at her, I honestly cannot afford it at this point,
So please if there is any tips, hints tricks, tests that anybody can throw my way I would greatly appreciate it, She has never failed me like this before, and I really need her for my job I do alot of driving and must have her going again asap
the spec's are 91 sierra 2500 5.7 480LE,
I have checked and am getting fuel, and have checked all the obvious items, cap, rotor, rotation, etc, I'm not a newbie to repair, but I'am to this type of ignition, and it's testing, I thank you for any help I can get, I will check this board in the morning before I set out to begin working on her,

Could be ignition module or pickup coil. Both are inside the dist under the rotor. First guess would be ignition module.

//2000CAYukon

I would guess ignition module as well.

Just an update, I didnt have a chance to read the replys before I found the problem, but yepp it was the ignition module, Thanks all for the input.