The pictures and directions were very helpful in taking out the radio on my 2008 Lt, but now I need to know what I am looking for.

I have no sound coming out of the left side speakers front or back. I can't imagine all those wires came lose at the same time. Could it be the radio that is bad?

What do I look for, and how do I test it? Thanks, Butch

 

I'm assuming you took the factory head unit out to replace it with aftermarket? Did you use a plug-n-play harness or did you just splice into the factory one? I'm not trying to be an a$$ with this one, but did you check the EQ settings?