96 Yukon Factory Amp bypass

[Fobra]

Got issues with my 96 Yukon’s audio system. I changed the headunit and there’s no sound coming out of all the speakers. I’ve tried connecting the pink wire to the remote wire (blue) on the head unit and still no sound. I read up about bypassing the factory amp and I did locate where mine sits (under the steering column right above the gas pedal). Does anyone happen to know how to bypass the factory amp along with wiring diagrams for it?

 

[df2x4]

The factory amp in the SUVs only powers the rear door speakers, and should be located under the driver's seat. The front door and rear roof speakers are powered directly off of the deck. If you've got no sound from any speakers, I'd wager that something else is going on.