Hey guys im outta ideas, i have a 2008 4.8 silverado, was doing a cam and stall swap, this turned into i cam heads and stall swap. Now, after a month of downtime and lots of double and tripple checking she is all back together and gtg, however, she doesn't go She cranks and sounds like she will start gets close to it then dies. I have gone over all the connections all is good, same with the grounds, and fuses. Did a spark test we have spark, sorry Phillip, and there is also fuel at the rail and injectors are firing. What am i missing? Have tried the security relearn multiple times and nothing. Any ideas, Thanks guys!