Ok I have a 2011 Chevy Malibu LS....i bought it with the factory radio being locked. Talked to a Chevy dealer and he told me that it'd be $175 to unlock it, and not guaranteed to work if the radio was switched out. So I bought a 7" double din aftermarket stereo for $50. I got everything but someone told me I need a wiring harness to hook up from my car to the stereo harness that came with the new stereo. Then they told me I couldn't get an aftermarket harness for like $20. That I'd have to pay almost $300 for a factory one. For the fact that the stereo is hooked up to onstar and that I have controls on my steering wheel. They said if I don't and something goes wrong that my car won't start and I'd be locked out. Someone please help, I've already spent enough on the car after buying.