Antenna plug removal

[TCL1962]

I have a 2020 Silverado WT provided by my company.  My 2016 had a 3.5MM audio plug in the center console and I had a Sirius radio that I connected that way.  Chevy has stripped these trucks way down and no longer gives you a 3.5MM jack (or any storage for that matter).  The Sirius radio came with an FM adapter that goes in series with the normal FM radio antenna which then allows you to tune to a station on the radio to listen to the receiver.  I located what I am pretty sure is the antenna connection behind the passenger dash below the glove box.  I don't know how to get the cable out to see if it is the same style as the Sirius adapter.  In the old days you just pulled hard but this looks like it may have a captive plug that needs to be released but I can't see well enough to tell.

 

I found a picture from back in 2019 on this forum that has a good image of the unit,  It's the black coax that I assume is the FM antenna,

 

Can anyone tell me what has to be done to release the cable?  Thanks in advance.

[Green95Hoe]

Were you ever able to integrate the FM modulator in line? I am trying to do this myself. Hoping someone might know the part numbers for the antennae adapters I will need.

[TCL1962]

I was never able to get an answer and gave up on this project.  Mine is a company owned truck so I did not feel comfortable going any further.  I am convinced that it would take some sort of adapter but I was never able to get the factory plug unhooked to take a look.

[GETGONE]

The bottom side of the antenna plug in the picture has a tab you have to depress to pull it out. I can't tell if there's a locking tab to hold it in place, but it doesn't appear so. Why not use one of the adapters that just broadcasts the signal via FM via inline with the antenna plug. I haven't seen any of the inline antenna style in YEARS. I have one somewhere and it's the old style GM plug, it's changed since then.