I cannot state about the factory putting them on as most already come with UConnect for tracking purposes but do know we have seven dealers in the Houston area that installs them during the PDI process:Talked to my salesman today about the tracking device and he told me they are put on in the factory to track the trucks during shipping. I told I didn't want it on my truck when I take delivery and he said they take them off during predelivery inspection. I also asked about checking fluids (rear differential) and said all that is part of their inspection.
With that said I will be checking for both when I pick-up truck.
He also showed me the detailed sheet showing where the truck is, and it showed estimated delivery to dealer between 1/25 and 3/2.
All Ken Garff dealerships (Clear Lake CJDR, Northwest CJDR, Texan CJDR, and dozens more in the western US), Southfork CJDR, and the three Autonation CJDR dealers.