Source link for the below listed commands: uConsole: How to enable 4G extension
A guide for setting up GNSS for your uConsole from scratch, including finding GNSS antennas for connecting to your uConsole, along with information on how to decode the output from the GNSS receiver.
For this HOWTO, you need the uConsole 4G Extension module to use GNSS, but you do not need SIM card or cell subscription installed on the 4G extension module in order to use GNSS
Just to repeat, so there's no misunderstanding, you can use the all of the commands listed below without a SIM card installed into the 4G Extension module.