I have a 2003 Chevrolet suburban with bose and the stock radio. I've been trying to add a subwoofer I put in a line input converter underneath the glove box straight out of the Bose amplifier and now the stereo doesn't work at all. Any suggestions.

 

Check fuse panel in the dash and any wiring that may have been cut during the install of your converter. Fuse could have blown if your install was done with power to the radio.