What are 3 wires that are connected to Shark Fin antenna?

[TahoeLT10]

I have a spare with 2 wires, but mine is 3 wires. Is it XM, GPS, and OnStar and if so which color is what? TIA

 

[wjburken]

Soe

I have a spare with 2 wires, but mine is 3 wires. Is it XM, GPS, and OnStar and if so which color is what? TIA

Spend the $125 and buy this before hacking up your wiring trying to make your 2 wire fin work.

ACDelco 25815079 GM Original Equipment OnStar, Digital Radio, Mobile Telephone, and GPS Navigation Roof Mounted Antenna https://www.amazon.com/dp/B0016HW8C4/ref=cm_sw_r_cp_api_glc_fabc_4eebGbTP152G9?_encoding=UTF8&psc=1

 

[TahoeLT10]

Soe

Spend the $125 and buy this before hacking up your wiring trying to make your 2 wire fin work.

ACDelco 25815079 GM Original Equipment OnStar, Digital Radio, Mobile Telephone, and GPS Navigation Roof Mounted Antenna https://www.amazon.com/dp/B0016HW8C4/ref=cm_sw_r_cp_api_glc_fabc_4eebGbTP152G9?_encoding=UTF8&psc=1

I don't mind buying a new one, but I want to troubleshoot B2470 antenna open circuit first with by swapping for an antenna with two wires, which I have on hand.

 

[wjburken]

I don't mind buying a new one, but I want to troubleshoot B2470 antenna open circuit first with by swapping for an antenna with two wires, which I have on hand.

Ok. That makes a little more sense.

 

[petethepug]

This is 2017 info, not sure if GM has the parts still or uses this strategy for repairs.

https://techlink.mynetworkcontent.com/wp-content/uploads/2017/11/GM_TechLink_20_Mid-October_2017.pdf


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