Hi. I'm trying to install a bluetooth streaming interface on my 2013 Avalanche LTZ, which is designed to connect to the factory XM radio module. All information I've found suggests that this should be located in the cavity behind the glove-box, but it isn't there for me. I have a currently-active XM subscription so I know it's somewhere, I'm just not sure WHERE. Does anyone have any suggestions?

 

From what i've read, ~2009 and later was built into the stereo itself and was no longer a separate part. You can verify by looking at the back of the radio, you won't have an antenna input wire.