I finally ordered the GPS antenna from Tasco and it arrived today so I installed it. Took a 5.5 mm, small torx bit and a 10 mm socket but it’s done! Installation would have gone easier if I had pulled the ceiling free of the passenger door lip in the beginning. Once I did that then I was able to reach in and access the 10 mm bolt for the antenna.
I drove on the 5 south past the areas that it always cutout without a single problem!