I have a 02 Chevy Tahoe with two problems so far.I bought my truck with no radio so I decided to install and aftermarket HU. After installation everything seems to operate right except for one thing. No Audio out of the speakers. I know that the speakers works just no sound.And the second problem is when the truck sits overnight and i try to start it in the morningit cranks up but no start. After about a good 5 mins it finally starts and once it starts it runs like it never had a problem. after that it will start up with no problems till the next morning. Does anyone have any ideas with whats going on.