2019 Silverado custom trail boss 5.3 cranks but won’t start.

[B_Rob]

My truck will crank but won’t start. Several codes have popped up. P1682, P0685, P16A7,

P16BC, P0689, P16AF, P16BD. Everything is saying open circuit to ECM or ignition switch. Any have this problem? Is it part of the wiring chaffing bulletin? Bad ignition switch or ecm? Truck has 40k miles. No issues before this happened 

[silveradosid]

it is probably the fuel pump control module, it is not that expensive and easy to replace.

[B_Rob]

None of the codes come up with anything to do about fuel. It’s all ecm or ignition switch related codes 

[B_Rob]

After searching all the codes that popped up there was one common factor that kept coming up, a service bulletin. After reading through the bulletin a few times I decided to investigate myself. It turned out to be part of the wire harness down by the ECM was not secured and was rubbing on a sharp edge of the plastic frame that holds the ECM. Ot actually wore through one of the wires. I repaired the wire and the truck fired up first time turning the key. I will try and link the bulletin for anyone else having the same problem.