I just put radix s/c and 2002 ls-6 cam and heads on 2002 5.3L chevy suburban. The truck started and ran but wouldn't idle when it warmed up and would hunt a little when it was cold. I read the pcm with ls1-edit and came back two days later and now it won't start. I cranks and almost fires then just cranks. no codes are being sent I checked with a tech2 and autotap. I see there is a another post with a similar problem any thoughts would help.

Jim