Electrical problems

After having the engine swapped out. Several electronic components started buzzing. The electronic controlled intake the coil packs I think it's a vapor lock as part of the vacuum lines. I'm not sure what the part is and a couple others are buzzing. The coil packs are good the other parts test good the computer is reading no error codes other than a random misfire. We know that the security module has a part to play in this but it's not only that.