Whats up guys? I've had my aftermarket double din Pioneer X2500BT with the gmos for onstar for about a year now and last night i was in my buddies 02 SS w/ stock sound and his sound was a lot louder than mine. I was playing with the settings on my amp and head unit earlier but i couldnt come to the sound loudness he was putting out. So before i go an tear apart my dash to get the the harness is their a setting **** on the Gmos that could control the loudness coming from speakers? cause my door chime volume is almost un-hearable which leads me to believe there is a control setting on it but just want to be sure before i take it all apart for no reason. thanks guys!