The dreaded POWER LIFTGATE gremlins!

First off,Thanks for letting me join! I've been reading all the threads on here and I haven't found quite what I'm looking for. Here's my dilemma on my 2015 MKC with powerliftgate: Power liftgate started acting crazy, sometimes it worked electrically, sometimes it didn't. Still worked manually. One day I passed by the rear and noticed the sound of the rear latch cycling. After a weekend of no use, found dead battery. Charged battery and two days later dead again. Took rear liftgate apart to investigate, found lock cycling. Used amprobe on battery and determined that with car off and PLGM ( I believe is the correct term Power Liftgate Module) plugged in, 5A draining from battery. Door actuator quits working from all switches, electrically, altogether. Only way to open rear gate is to manually stick hand in door and push lever on actuator. Unplugged the module and it went to 0A. Ordered a new module and while waiting, pulled latch mechanism apart and checked all of the switches in it. everything looked OK. Got new module in and installed. Power liftgate still doesn't work. Ordered a new liftgate motor, waited 2 months since they were on back order, installed it and still nothing. All fuses OK. Used Forscan Lite with ELM327 Module and found an error that said the computer had lost communications with the PLGM. Cleared the code and retested and the code never came back. Still doesn't work. Car is out of warranty and dealership too far away. I'm praying someone here can help me. Thanks