can tuning be changed with EFI live and maybe make it work or does it need to be pulled and sent back to place that said it would work and shoved into a crack and get money back
we just swapped a 08 lmm out with a 10 lmm and now we get no crank and no start, we have checked all fused and connections and everything is plugged in and good. The 08 was a 3500 Silverado truck and the 10 is out of a 10 3500 van, could this be the security system lockout or ecm not compatible?