I had that done in my Trailhawk. I took a quick look at the TSB page. Looked simple enough - 2 or 3 steps as far as I remember. This RRT is for all GC WLs btw, not 4xe specific.
Thank you. I also read it and if they mess up the whole module has to be replaced. Glad to know it is non 4xe too weird it wasn't performed bought in end of Jan and the TSB was out since 2021