Hello i have a 97 gp gt, last year i had a new head unit put in and the guy who did the install hard wired it, well now pretty much nothing works, my mirrors wont move, my hazzards stop working, my windows wont work unless they are hard wired and run constant power and now i cant even get my cd player to turn on, ive checked all the fuses under the hood and in the glove box to only find that none of them are bad...... but the radio fuse in the glove box doesnt read anything on the voltmeter while the radio fuse under the hood read around 12v, and oh yea about a month ago my interior heat/AC fans stopped working.... if anyone has had this problem or has heard of a way to fix this without having to take it to GM that would be great