Rob Burgoon

Hey guys,

I just added a Pioneer FHX-720BT with Metra GMOS-04 in my 2006 C6 with bose. I'm not getting anywhere close to as loud as the factory system, and I'm still getting a quality drop in the last 10% of volume.

Any idea what's going wrong here?

0Double D Mods

adjust and turn the blue dial on the side of the gmos04....

Rob Burgoon

Ah. I used the dial next to the connector to adjust chime level. Perhaps I got the dials mixed up...

0Double D Mods

it does both chimes as well as the volume of the radio

the black with yellow stripe...
if you touch this on something metal it will raise and lower the onstar volume as well