So, I really liked the feature on the Ford F-150 where you can release the tailgate using the key fob. I wanted to do it on my 2017 Silverado. I found a past topic on this forum that mentioned it, but had no instructions. I was able to piece together enough information from various forums and came up with a working solution for anybody that is interested. I have attached a diagram for making the connections. I tapped off the power lock in the tailgate and used a T-connector to tap power from the trailer wiring.
Video showing it working: https://www.youtube....h?v=YmF4Gk3bHnM
The PAC TR-7 counts a set number of pulses within a defined time. When it detects the programmed number of pulses, it sends a pulse to the actuators to open the tailgate. I have mine set to count four pulses in three seconds.
2 Heavy Duty power door lock actuators
2 Bosch style relays
The major hurdle was that the power lock system is "energized" at six volts and sends a 12 volt pulse for locking/unlocking. The PAC module detects the 6 volts as a "pulse" and thus would lock out the timer. So it would open the tailgate every fourth or whatever number that was set. Using 2 relays solved this problem.