No 02 activity

[Zhedding]

Hello, I have a 1971 Chevy c10 pickup that I put a 5.3 in I used a psi-conversion harness with it and I have been driving it for a few months without issue, a few days ago I hit a pretty good pothole and since then it runs really bad and its not getting and signal from either 02 sensor I put new sensors on both sides yesterday and still hasn't corrected the issue and they are both reading at .45 volts on my scan tool? The codes I'm getting are p0134( 02 sensor circuit no activity defected bank 1 sensor 1) and p0154 (02 sensor circuit no activity detected bank 2 sensor 1).