2006 yukon denali aftermarket stereo problems

[2006yukonDenali]

I recently went to install a new double din stereo in my denali, and I got it to turn on, but there was no sound. I had all the speaker wires hooked up, but still wouldn't play anything. I was wondering if I need one of the gmos adapters? (It has the factory touch screen radio, OnStar, and amp) thank you in advance

 

[Rocket Man]

What wiring harness did you use? You need a PAC or Maestro and a steering wheel adapter if you want to maintain those controls.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics, please.

Please give us some additional information on specifically what you did to wire the new head unit into the existing amplifier and speaker system, as @Rocket Man asked.