speakers not working

Installed a aftermarket dvd player in a 99 denali worked fine for about 3 weeks pulled it out today to hide some wiring and when I got it all back together there was no sound coming through the speakers any help would be appretiated Thanks in advance It does have the bose system if that makes a differance

Hi, it looks like you know the problem, as it failed after wiring work was done. Retrace your steps. Did you disconnected the battery when you did this? It is suspicious that there is no sound out of any of the nine speakers. There could be a fuse blown or a wire pinched or disconnected. Start with power and ground to the radio and amp, then follow the connectors and their wiring.
Take care, Eggert :bananasmi