chassispro

I have installed an aftermarket backup camera using the write up ( HOW TO: Adding a back-up camera to an 07+ C\K SUV) by shawnvw. The camera is a cheap camera I purchased on ebay. I got the camera installed, and had the backup camera turn on in the program. When I put the tahoe in reverse, the image come on, but the image is distorted and white lines are rolling on the screen. I went and double checked my wiring and it seems to be fine. I can plug the camera up to an aftermarket dvd screen, and the image comes up fine on that screen. Does anyone have any sugestions?

Thanks in advance,

Scott