No start on my 2005 lly

[dslboy]

Starting to really hate my old truck it's a 2005 GMC 2500 lly I can't get it to start it won't try to start interior lights all work but will get no power to starter I removed relay and jumped a wire from side to side and than it will crank but it won't Fire .
I removed engine harnesses and replaced with another pulled harness out of fuse box going to pcm tcm trans and engine harness went over thoroughly looks good replaced it nothing replaced ignition switch nothing had a tcm out of a wrecked truck swapped it as well still nothing anybody have more ideas
THANKS IN ADVANCE AND SORRY FOR THE ILLITERATE WRITTEN POST NOT MY STRONG POINT

2005 GMC 4x4 crew cab efi live by PPEI upgraded trans 150 fass fuel system

 

[dslboy]

I will now post one of the most embarrassing things ever the reason I pulled my truck into the shop was it was building no power or boost thought it was wiring issue since it would not throw any codes so I played around with it forever could not find any problem thought I would try to flash in my stock tune to see if it would let me read more DTCs I went in to do a full flash with my v2 and it started to work than error popped up saying no communication . I than unplugged and tried a few more times with same error I than plugged in a different code reader it would not communicate with truck than it would not start and sent no power to fuse 1 and 2 that's when I got annoyed and pulled all wires and ign switch just to r find out still no start but after a few hrs more of digging into dash wires I thought I would try to plug in my tuner again now it would communicate and than I thought I would try to reflash it again bingo it starts if only I would thought of it sooner that my efi live had erased part of it how much blonder could I be

2005 GMC 4x4 crew cab efi live by PPEI upgraded trans 150 fass fuel system