Soo..... another Happy pgamboa customer here! I just got done with the DL8--->DL3 upgrade using Phil's plug and play harnesses. The harnesses were shipped quickly, and they looked like they came right from GM! 2 hours later and I have fully functional DL3 mirrors thanks to Phil, because I would have quit half way through if I tried to figure this out on my own. Everything went flawlessly except for one broken clip, but that was my bad.