Hi thanks everyone for the info.
My truck does not have a steering wheel control for the stereo nor an on star system, is a 14 wire delphi connector. I purchased a DKGM-48D interface and turbo-wire connector that suppose to be compatible but it came with 24 wire not 14 like the manufacturer one.
Can someone please help me out with my truck stereo wiring diagram. I'm trying to install an aftermarket stereo on a 2006 GMC Sierra 1500 with bose audio system.