So I just installed the ECM from the junk yard.
I got the tune from file tune depot.
First time I flashed (that tune nothing edited except vin in the calibration box) it failed with checksum error
Tried it again and it worked.
The truck starts but runs for about 5 seconds and then shuts off.
Edge says code P0513 invalid skim key.
Then I go into ECM Options --> Parameters and disable B9905
During this flash I have to keep trying (3rd time is a charm)
Now the truck starts but these lights are on
1. Air bag light
2. Security light (red dot bottom right)
3. ABS Light
What is causing these lights?
EDIT: I have checked the vin number about 10 times, and it is correct in efi live.