Mad Max

Yes sir you are correct. I just spoke with PopAndLock tech support and they said the problem is not with the incandescent tester and the correct wire, it's that it could be a problem if used with a wrong wire. But he said, just as you recommended, to use a multimeter instead and I should get 6-10 volt spike (not actually 12v) when hitting the lock/unlock on the correct wires, and that the larger tan/green stripe and larger gray wires under the step plate should be the rear lock wires so second click should unlock it. I believe this all has pretty much been said before but there it is again. Thank you all for your help. Ordered and it's on it's way to me. ;-)

Sure would be nice if someone could tell us what those rear door lock wire colors are, and where to find them...I'm ready to do this asap. I noticed that in the instructions on the PopLock website it says, "If testing the wire to verify, all 2014 and newer Chevy/GMC Crew cabs the Lock and Unlock wires cannot be tested with a stan dard incandescent test light, you will need to use a computer safe tester." All I have is a basic snap-on fuse type incandescent bulb inside it's clear handle with a sharp pick type point for a tester. Sounds like my tester is a bad idea to use for this and may harm the truck's computer?

Bed Step

Wow! So I'm playing around with my new '14 LTZ Z71 Crew Silverado which I have been driving around with anew tool box and some other nice new handy crap in the back and I just noticed that the damn tailgate didn't lock remotely! Ran home and check this site and found this thread. Man oh man! I can't believe they don't have that standard. Hate to tap any wires and potentially have any warrantee issues but for this I will obviously have to make an exception. Will be interested to see if anyone finds the wire for the rear door unlocks so the will perform as mentioned above. It's mind boggling to believe there is no factory option for this.