I need a little more information to get you the correct harness PN's, the OEM RS one's are actually pretty cheap so if you want to shoot me your VIN in a PM or give me a call 800-369-5253 M-F 8am-5pm
I work up in Fox Lake at Ray Chevrolet, and live in Arlington Heights so I can hand deliver them if need be.
Well my ultimate goal is for getting the rear speakers and power windows. I have a 2012 LS so the ones with premium sound and power windos. Been looking online for the harnesses as well but only two I can find are PN 95936149 and 95936154 but are for sedan. Don't know if the wiring is different from sedan to hatch for the doors.