ive done some poking around here and there regarding this issue and ive found a few possible causes. my neighbors avalanche will either leave the backup camera on as soon as the truck is started. the other symptom is that it wont come on at all no matter what and the green light will just blink. ive found mention of a reprogramming is needed to correct the issue. ive also found mention there could be a problem with the feed from the switch thats supposed to activate that. anyone know of a way to test what the problem is or know how much it will cost ro have a stealership reprogram it?