You are correct that if this were a cam sensor issue you should have a code. The fact that you did not we should move on from this for now. The fact that resetting the ECM did not correct this is not conclusive. Did you unplug the ECM or the TCM? The TCM (transmission control module) is what actually electronically controls the transmission.
I am not suggesting the resetting this will fix it but I just want to make sure we are on the same page before we move on. Thanks
Friday, March 6th, 2020 AT 2:49 PM