Joey Perdue

I recently purchased a 2009 Suburban LTZ and got a deal on it because it had a few issues. One of them was the backup camera showing a black screen. I have tried to do all of my own troubleshooting by looking through all of the different forums and I can't find anything 2009 specific. From what I think I have learned they got rid of the module on the 2009 models which is why mine doesn't have one under the passengers seat. I have tried to replace the camera and all of the connections look good. At this point I am out of other ideas of what could be causing the problem. Any help would be greatly appreciated. Thank you.