I just recently bought a duramax, 06 LBZ, and he told me that he had installed this power pup programmer on it already. The top speed limiter wasn't off and I didn't know the setting so i tried to hook it back up. i pulled the fuses and went by the book but after turning on the key it said "unknown part number 0tc06d36 and 08 c06d3e contact bullydog" it won't let me go past that screen, i have to turn it off and unplug it. Any answers??