I just did the heater core in my 01 blazer and I can’t remember what this connecter is for any help would be much appreciated.

 

I'm not certain, but it kind of looks like the cable that goes from the factory CD player to a remote tape player in the console. Where was it located in the dash? I think that cable was often there, even if the vehicle wasn't equipped with the remote tape player.

 

Yeah it was for the cassette player I completely forgot it had a cassette. Thank you for your help.👍🏼