2012 Sierra Front Bench Seat: Where is the audio amplifier?

[Nautique Puller]

2012 Sierra Front Bench Seat(AM/FM/CD): Does it have an external amplifier? Where?

My 2012 has a stock "AM/FM/CD stereo".
I purchased a JL Audio Stealth Box, and a PAC audio converter.
I need to connect the PAC to the speaker outputs of this amplifier

I have GM drawings that indicate the stock audio amplifier is located in the bottom of the console. But I do not have a console, I have a 60/40 bench seat.

Does this AM/FM/CD have an external amplifier? Or is it part of the stock stereo? If it is separate of the stereo, where is it located?

I would like to locate the amplifier before start dis-assembling the dash.

 

[Parts007]

Too many options, need a VIN to tell exactly.