Hello guys this is my First ever post, im a long time reader on here and it was time to register .
I have a 2010 silverado v6 that i swapped a 2017 5.3 from a sierra.
I ordered a current performance harness and pedal. (New)
i went ahead and removed vats myself and the motor will start and idle. BUT it has a dead pedal.
If i press the pedal i can see the values go up on my scanner but the motor wont even hiccup.
Can anyone guide me through solving this issue, id really like to see how this thing runs.
also what are my options as far as gauges?

What trouble codes are you throwing? If you are throwing a fuel pressure code then I know your issue. You must be able to see high pressure fuel. If not you are stuck in limp mode

Yes i do the fuel sensor code.
P018c Fuel Pressure Sensor B circuit Low

The problem is this, The fuel injection wiring changed in 2017 and up. Look at your high pressure fuel sensor under the back of the intake. 4 wire is 2014-2016 and must use those operating systems. 3 wire is 2017 and up and must use 17 and up operating systems. Basically if the engine harness is wired as the early version is shorts it self out on the newer fuel injection wiring that stays on the engine. That’s why you get that code. Usually they won’t fire up and sometimes not communicate thru can bus. What I do is re wire2017 and up to the 2015 style. This gets me around the high cost credits to unlock through hptuners. Also I have certain operating systems that are swap friendly. A 2016 os usually will not run right no matter what I try. Feel free to call me at+17023535037 and I can get you all fixed up on this issue.