E66 global “b” in place of global “c”

[Jakezed22]

I’m sitting here in the dealership waiting area as my 24 elevation with the 3.0 duramax is getting looked at for an emissions issue. Multiple heater failures and also a rail pressure code, the service writer say it looks like a DEF tank which of course is back ordered. Still waiting to confirm the problem. I can’t help but think would the early E66 found in the refresh Yukons/tahoe run a new pick up? We are talking a global B ecm running a global C everything else. I’ve heard with global C all data is encrypted, and if that’s the case then I’d guess there no way in hell it’ll go. But however thought it would make at least a good discussion. What do you think?

 

[1FastBrick]

I haven't delt with any of that newer stuff. I am sure it could run the engine, how ever the communication between modules may be another issue.

 

[JoshH]

I think it would be like trying to run an LMM that used an E35B ECM using an LBZ E35A ECM. Similar architecture and identical from the outside but not cross compatible. If it were possible, I'm sure someone would have already done it.

 

[TheBac]

Jake, there's only one way to find out....

 

[jlawles2]

I would not think it's as much hardware as firmware. Unless the bus cannot support the speeds, making the older hardware talk encrypted is a firmware thing I would think.

Now if they could program the older hardware with the upgraded firmware, it might be more possible.