i have a 1997 chevy k1500 4.3 with 179K on it and im having an strange problem, it kills or stumbles at random given times with no warning. tonight it died and threw a new p1351 and p0147 code, when it quit tonight it started right back up and got me the last 5 miles home without any problems. i replaced the icm, cap and rotor in the last week none seemed to help the problem. i have ruled out fuel pump for the time being becuase the last 3 times its died the pressure never fluctuated, Ive been watching the fuel pressure over the last week as well and that all seems fine. Ive been made aware of a possible cam or crank position sensor failure but id like to get more information before i stick anymore money into it. Any help is appreciated, Thanks