Speaker 1: Today on our 2005 GMC Sierra, we're going to be installing the Pace-Edwards Powergate electric tailgate lock, part number 311-LK270. This system is only designed to work with vehicles with factory automatic locks. If you have a manual locking system, you'll need to purchase a switch kit, such as part number PAL9520. Even though you have a tonneau cover on your vehicle, if you… see more >