Ok so at first I bought my harness at bestbuy for 91 dollars, but turns out doesnt work for my car so I had was told to checkout metra. I wanna get your guys opinion on what I should run since we have the same cars, my car is listed in my sig. and I have the 7 speaker pioneer setup, amp, and factory sup, with onstar but dont care to use onstar not a big deal, so basically what harness should I be getting? Please and thank you.

 

crutchfield?

 

70-2103 15-20 dollars. you need to run ur acc to the fuse box