I downloaded my stock 2.8 LWM file and I notice I don't have as many calibrations as I've seen say on a 6.6 Duramax or what not...
I.e. There's no EGR calibration folder / table.
then only place i see that is in DTC, that if i wanted to say control the function's of the EGR valve.
Or say the DPF settings tables
pic for attention
Attachment 24030