Heres my story i got a 1996 fleetwood with a stock lt1 it ran fine until i noticed the temp light came on so let it cool down and next day i tryed to start it, it cranked but wouldt come on. The reason it overheated because the water pump bearings went out from what i seen and got so hot it melted the side of the optispark so since i seen that i then replaced the following-optispark/harness,water pump,temp sensor,icm,coil,cam position sensor,cam seal/opti seal. Now still cranks but no start? I get no spark from the spark plug wires and coil?? I even swapped the pcm thinking maybe it was bad but still nothing. I checked fused there good but did replace the ignition fuse but still nothing?? What can i check now??