Hi pgamboa, I've been following this thread for some time and upgraded my 2016 suburban LT mirrors to the DL3 mirrors I added the power fold switch as well. From what I had read it would likely be plug and play, but it hasn't quite been. Driver side: -power folds -memory function works -power adjustment works -puddle lamp and turn signal do not turn on Passenger side: -does not power fold -memory function works -power adjustment works -puddle lamp and turn signal do not turn on Would your custom harness work for my case? Thanks. Sent from my SM-N950U using Tapatalk