I have searched for this on the forum if I missed it feel free to delete this one. My backup camera isn't working at all just shows the lines with nothing else on it. If I purchase a new camera on Amazon will that fix my issue is there a way to test it. Some background information I boutlght the tailgate used from a junker. When I purchased my 2017 colorado wt truck in 2022 from ray skillman in greenwood it didn't have a tailgate.