Chevrolet Repair: 98 gmc pk 5.7, camshaft sensor, crankshaft sensor

Question
I have a 1998 gmc pk 5.7 and i just rebuilt the engine. It keeps showing p1345 engine code. While your driving sometimes it has a miss and sometimes it doesnt. I`ve replaced the crankshaft sensor and the camshaft sensor. I have the distribitor facing number 1. I dont know what else to check?e

Answer
HI GREG, YES THIS IS A COMMON MISTAKE WITH THESE NEWER ENGINES. THIS CODE IS FOR DIST,CAMSHAFT
CORRELATION NOT SET CORRECTLY..SO WHEN YOU PUT THE NEW ENG IN AND PUT THE DIST IN,, IT DID START BUT THE COMPUTER IS NOT SEEING THE TIMING IT WANTS TO SEE.KEEP IN MIND THE COMPUTER SETS THE TIMING ONCE IT KNOWS WHERE TDC IS.. AGAIN,, DONE WITH SCAN TOOL.. SO YOU WILL NEED TO TAKE THIS TO A SHOP THAT HAS A SCAN TOOL THAT CAN PERFORM THIS TIMING SETTING..ONCE THIS IS SET THE CODE WILL NOT RETURN..GOOD LUCK TO YOU,AND IF YOU NEED MORE HELP GET BACK TO ME..,TOM.