Shawnvw you sound very intelligent on these issues you have any ideas

 

my personal email is shunbo67@gmail.com if anyone can help i would greatly appreciate it

 

i am trying to install a pioneer FH-700BT in my 2004 chevrolet 2500 duraAX AND I HAVE THE interface wire and soldered and shrink-wrapped and i am ready to go back in but when i turn the key on mothing happened i want to know what wire from the factory uses the acc on the key so i can hook the red power wire from the radio any help will be welcome thanks

 

I put in a oem navigation from a 2010 duramax. It said theft lock and the dealer unlocked it for me. But now the volume does adjust. Someone said I need a none nose amplifier. Anyone have any ideas