I am inclined to believe this is a result of a bad connection in the wiring. I have mated a non-GM DBW pedal to the GM DBW harness wiring (6 wires). I have also verified that the Electronic Throttle Position Sensor is not bad (already replaced under warranty....crate LS3 with approximately 1k miles, issue came back with new E-TPS).
Attached a log from a short drive that ended with the aforementioned DTC's. The failure happens right about 18:00:54.....car was being driving very calmly, was in 4th gear, low rpms, pulling away from a stop light.
Any constructive input or feedback is welcome if this log is able to reveal something to you. I can see where the issue happens but I cannot interpret much from what I see.
Upon the DBW pedal going dead, the car entered into a misfire condition. I shut the car down and reset the DTCs, and it started right up like nothing happened and drove on.....until a 1/4 mile down the road, I went over a set of train tracks which either caused the DBW pedal failure & misfire to return or it was one hell of a coincidence. The second failure I didn't even shut the car down, I simply cleared the codes and the misfire vanished and the pedal was restored instantly upon clearing in realtime. This is why I am thinking the obvious explanation is a bad wiring connection, but I'd like an outside set of eyes and brain matter to look at this, in case there is something I could be overlooking.
29FEB24 00.PNG
logfile 29FEB24 2.9 DBW failure 01.hpl