u0100 help with troubleshooting

[3 GENS]

hello, first post but i read a lot around here. so i bought and am driving around a 2011 Camaro 2SS ls3 stock with a Huron single turbo already tuned to 8 lbs of boost. so i decided to change plugs and wires, taking off a plug and the heat wrap on the headers just disintegrates...so, the project begins! i pull the headers and cross pipe and re-wrap them looking around the engine bay and reading around the internet, I thought it would be smart to throw in A.R.P. head studs and LS9 head gaskets. so i put it all back together and went to start it and notice my fuel tank is reading empty and i have 3/4 a tank of fuel then i get the code u0100. did a double check on all my grounds and connections and am not sure what i am missing? i had full battery power and now it seems to draw power fast every time i hit the starter. i never touched the wires to the starter. any suggestions would be greatly appreciated!! thanks so much!!

[3 GENS]

update its fixed i did it myself with some online guidence from you tube and a great forum called scannerdanner. this is where i got started

https://www.youtube.com/watch?v=JFTh...YuTOQ&index=30

https://www.youtube.com/watch?v=w9PK...t=11s&index=11

after watching these videos i whent to harbor freight and bought a wire tracer and i had a multimeter

and then i went here

https://www.scannerdanner.com/forum/...ing.html#23971

it is not as hard as many would think it just takes patients and attention to detail.

[moddman]

FYI. I just fixed this U code just now. I read and did research about dealer needing to reflash TCM. So since I have HPT then I just connected and did a FUL (entire write on TCM) write with also DO NOT Write for PCM. Took a ride and no more U code. Before the FULL TCM Write cruise control wouldnt work now all good after FULL TCM write.