2007.5LMM

Received Autocal and first updated firmware (2.07.39) and bootblock (2.07.04) on computer. When attached to computer the display is fine but shows DTC $0280

When I attempted to attach to truck and read stock tune the screen turned blue but no display. Attempted multiple times and finally got a display but the letters are all screwed up and you can't read it. According to other forums I went into BBX and re-programmed scan/tune with only selecting LMM E35B. No change.

I did manage to read the stock tune and can see it in Explorer. But I am afraid of flashing the tunes to the truck with the display like this as it's hard to read whats happening.

Any suggestions I need to get this thing going. My tuner suggested I use this forum.

Sorry should also add I have pulled suggested fuses as well and OBD is powered/functional as Edge Insight works fine.

Thank you