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My 02 olds bravado SUV starts and runs fine but my dash lights, windows, locks and cluster will not work plus other little things. This is all after putting in the deck or replacing the factory head unit using the proper $120.00 interface or adapter. The stereo never sounded the way it should of. I’m thinking that possibly the Bose system might have something to do with it or maybe it’s an electrical or mechanical issue. Any suggestions or recommendations. HELP ME PLEASE AND THANK YOU…

Hi @chugger, Have you checked the fuses for the various systems that don’t work, you didn’t say? Given that so many systems are not working it may be a main fuse, that is supplying subsidiary fuses for the various systems that is the problem. Here’s a link to the start of the fuse section of the owner manual that may help. Click on next page for each subsequent page to view the fuse layout and the functions of each fuse.