Stumped on no CC or Jake brake

[Colter]

It sounds like there was an issue in the past while flashing in regards to the ECMs template, if its lost that information reloading a calibration will just carry over the same information or lack thereof. What id start with is find someone with the same truck and engine and pull the template from that ECM and write it into yours.

Make/model/engine you have? myself or someone else here may have a template that would work as well as instructions on getting it into the ECM which is quite easy