No problem. There are two different diagnostics provided. One is if the vehicle has an electric shift transmission and the other is not electric.
I attached the diagnostics below for both. I'm not sure which you have. The first five pics are the non-electric shift. The last three pics are for the 4L60E electronic transmission.
Let me know if this helps or if you have other questions.
See pics below. Note: The diagnostic tree is cut in two to make it readable for you. I did overlap them so you can follow from one to the next. Also, I don't think the knock sensor would prevent it from running.
Images (Click to make bigger)
Tuesday, May 16th, 2023 AT 8:40 PM