My stock navigation screen went black about 6 months after buying my h3. I read the forums and tried replacing the battery terminals and then putting conductive grease on the radio connectors. Of course neither worked and the grease actually made my radio stop working altogether. Anyway. I havent had a radio for close to 2 years and after calls yo gmc who said $800 for a navigation refurbish I gave up and bought a cheap chinese double din Touch screen. I really just want to play a cd or hook up my ipod. Anyway. I get the head unit and call the local stereo shop asking if they have a harness . They quoted me $275 for the mounting kit and harness and said something about bose and on star. Wtf! I cant catch a break! Is this legit? Why is it so hard to just stick a stereo in this thing? Im mot even trying to hook up nav. Do I need all of this? There has got yo be a better way