Newbie here with a 2+ year problem

**jim_in_dorris** · 11-04-2018

I missed that, but what I wanted was ecm #. 1project and I both found that by locating the BCC in a spreadsheet available on this site.

**jim_in_dorris** · 11-04-2018

You might consider trying a $0D mask like BJYL to see if that changes anything. Also, was you cam indexed when installed. I know that you said the dots lined up on the install, but the indexing can be wrong. It wouldn't change your stumble on startup, but it might affect your need for 6 degrees of timing at the distributor.

**pmilne** · 11-04-2018

As far as indexing the cam, I did not, it came to me as a long block. "Assuming" the builder would have done that.

Too many different terms, I am getting mixed up. The "box" was given to me to try, in place of my own, thats whats in there now. The "blue chip" was what was in there. Why cant I find that 1263167 in any of the charts I have read? "Remanufactured" was mentioned? What am I missing?

I will assume because when I changed the box, which I am assuming is called the ECM, nothing changed. Am I safe calling that good to go? Only thing I want to do now is get a different chip and see if that makes a difference, is that correct?

**jim_in_dorris** · 11-04-2018

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.