Ok, I had an overhead DVD player installed in my 2007 NBS silverado crew cab yesterday. Since that time, the truck has been slow to start, meaning that when I turn the ignition, there is a 2-3 second delay before the truck actually cranks. I am getting no codes, lights, or security issues. It starts with the remote start with no problem. It doesn't appear to be anything serious, other than the delayed ignition. Is this a major problem, something that I need to be concerned about? Any help is appreciated. Thanks!