ok here goes. last week the water pump went out on my imp.i changed it out and replaced the plastic elbows on the belt tensioner while i was at it. when i got it all back together it ran really rough and got a code p0300. i checked the ICM and 1 & 6 were not firing so i replaced it. now i have no power to the ICM at all i checked all the fuses and swaped out the relays and they are all fine i dont know whats up but it got me stumped. please help. anyone have a 2000 Chevy Impala Ignition Circuit Diagram or ideas where to look