Update: Just wanted to update those that care. Replacing my oem roof mounted gps antenna with a newer oem gps antenna fixed my gps location being way off at times.
I ended up replacing my 2015 F150 oem roof mounted gps antenna with part # JL3Z-10E893-AB(Tasca says it fits 2018-2020 models). I then used the Ford GPS signal splitter harness(GL3Z10E928AA) installed behind the APIM & ACM to split the signal. The blue connector went to the 2020 year model APIM and the yellow connector went to the original 2015 ACM with Sirius satellite radio. I then removed the cheap square puck gps antenna that people normally use for Sync 3 upgrades. I know the cheap antenna works for some but it was not working all the time being under the dash and I didn’t want it visible on the dash. For this reason I went the oem antenna and splitter route. Originally I tried to use the gps splitter harness with original antenna but then the APIM couldn’t set and maintain the correct time of day. Apparently the old roof mounted antenna couldn’t provide the clock information to the APIM.
WARNING: You will need to slightly enlarge the hole in the roof for the newer antenna to fit. The mounting stud on the newer antenna is slightly larger and not exactly round. Thanks for all the replies to my initial question that helped lead me in the right direction.