Unfortunately that leaves wiring or the ECM. I attached the testing that we need to do that will prove out wiring or you can just replace the ECM. However, I have known many people that waste their money on an ECM because it didn't fix it. So if you don't want to do this testing or are not able to, I think it is worth investing to have someone check it out rather then just taking a shot at the ECM.
Take a look at this info and let me know what questions you have. Thanks
Images (Click to enlarge)
Saturday, October 24th, 2020 AT 7:36 PM