1998 GMC Sierra

[giffy09]

Hello All! New to the forum and looking for some input from some experienced wrenchers. I have a 98 GMC Sierra 2WD, 5.7l. I am having starting issues that only happen after the truck has been running. If it sits for several hours it will start no problem, then i'll drive a short amount of time, shut it off then it doesn't want to start again. It has always started again until recently. I drove about 6 blocks from my home to the gas station then nothing. Had a buddy tow me home and i proceeded to check through everything. I have a Chilton's manual that guided me through most of my testing procedures. The engine code I was getting was for TC Circuits 1 & 4 High voltage. So i replaced the ignition control module. Getting spark out of the coil and at all cylinders. Visual inspection of the spark looks strong. Then in addition to that code description i then got a Cam shaft to Crank shaft sensor correlation. I have since replaced both sensors, cleared the codes and did a relearn procedure for the crank sensor. Everything appeared to be good, the truck started everytime I hit the key. Now a couple of days later it is exhibiting the same symptoms. The service light has not come back on since i cleared the codes. Once the truck is running it runs like a top. Just have this issue of not wanting to start after having been running for a short amount of time. I also replaced the fuel pump and fuel filter not too long ago as well. I appreciate any input that can be offered. Thanks.