1970 ls_c10

iTrader: (1)

I got my ls swap 1999 4.8l heads cam intake headers and stall converter (4l60e) tuned last week and we had it on the dyno for hours. And it ran and started fine the last several times we started it. But when I was going to load it on the trailer to take it home I couldn't get the truck to start. My tuner came over and plugged in said the 2bar map sensor wasn't reading anything. I checked the sensor and plug seemed fine. He decided to try and reflash the tune. It started right back up. Drove home (an hour and 20 min one way) and got the truck off the trailer fine. Shut it off. A few min later I go to start it and drive it into the garage (long day with my pregnant wife) it wouldn't start again. Do you guys think my pcm is bad or???