not sure what the pcm is, is that the gem? if not i will check it. am totaly lost will try anything. to recap what was rong and what i have done.

problems in order...
wipers quit
power windows quit
interior lamps flashed
head lights quit
truck quit starting
truck would not turn over with key but would if you crossed solenoid

repairs maid
put on two used gems then bought a new gem
(no help)
replaced fuse box
(all started working but no spark or fuel pressure)
have power to coil packs from wiring harness
have checked all fuses and mega fuses