Newbie here with a 2+ year problem

[jim_in_dorris]

The broadcast code BHAS is the "calibration" or tune for your truck. It contains tables constants and flags that control things like fueling, timing and closed / open loop. The 8625 is the ECM that runs the gm code that uses the BHAS calibration. $E6 is the family of masks that your calibration is associated with. A $0D mask will also run your truck, however the code and calibration are different. I have not spent enough time looking at $E6 to know what the differences between $0D and $E6 are. I misunderstood you when you posted the 1263167 number. I assumed you where telling me the ECM number, not a number off the blue memcal which lead to the remanned comment. Ignore it, you are fine. Your "box" or ECM is an 8625.