I had a new Pioneer stereo, an amp and sub installed a couple of months ago. Now every now and then the power just clicks of. It comes right back on and doesn't interfere with driving. Sometimes when I turn off the key it completely shuts down, no lights no door chime no nothing. Once I put the key in and tried to turn it on after it shut down and nothing. I tried again and it was fine. Not that this is killing me or anything but it is kind of annoying and I am concerned there may be a bigger problem. The installer used all of the extra components needed for the Silverado, ie... the door chime modual thing that is needed on GM. I was wondering if anyone else has had this issue and if so, what did you try, and was it successful?