Well none of my gauges work. I'm able to turn the car on but it's like its not on they never move. I don't know how fast im going or how much gas I have lol. About a month ago I installed a Pioneer avh-4300dvd but i didn't use the Scosche GM13SR wiring harness I used the the regular wiring harness cause I don't have onstar and didn't care about keeping my information center. So im thinking that its happing cause of the wiring harness not being the right one. Has anyone have this happened or know why it's happing. If you can help I would appreciate it. My signal lights are also not working another thing I can think it is might be a fuse problem.