Okay so yesterday i installed the avic d3 into my 2008 cobalt ss tc... everything seemed to work fine. Today i turned up the volume all the way and it only sounds abbout half of what the stock system was putting out. I was always told with an aftermarket head unit it should be louder. Is this normal or is it that i wired it wrong. I mean it seems to play fine, just not as lloud as the stock system would go.
thanks sam

PS: also i used the Gmos lan-04 connection for my cobalt because of onstar.
Thanks again Sam

 

i had mine professionally installed. i don't have onstar, but i had to get a wire harness for my car as well. this isn't normal. i am not knowledgeable enough to know how to solve your problem. sorry.

 

have you adjusted the sound settings? after a little tweaking I hardly get mine up over 13 because it is so loud...

 

yes i have adjusted sound settings.... the only thing i have found is someone said there is a screw that needs to be tightened that adjusts the loudness level. Havent found that screw yet! Any help?

 

its on the gmlan module itself. the module is a black case with 2 harnesses and a knob on it somwehre. u cant miss it

 

This, but be warned, if you turn up the volume on the box you are going to be turning up the volume on the door chime. When I did mine the chime pissed me off until I ended up bypassing the factory amp for my 4 channel