GM Truck/Car won't start super good info below.

[GMCTRUCKS]

My older brother had this problem and not even the Stealership could find the problem but they did replace a ton of parts for nothing view video's below.

https://youtu.be/8r9svRLEA6w

https://youtu.be/y9QQrrRxrxI

I hope this helps somebody here.