should there be more sound?

[BarnFinder75]

Hey new to this forum and to my '02 Yukon. It does not have Bose but it does have the sub in the rear, my question is, why is there no sound coming out from the sub or the rear most pillar speakers? Is there a harness I can trace or is this a common problem with these? Any help would be great.

 

[MOBmentality]

Hey new to this forum and to my '02 Yukon. It does not have Bose but it does have the sub in the rear, my question is, why is there no sound coming out from the sub or the rear most pillar speakers? Is there a harness I can trace or is this a common problem with these? Any help would be great.

its possible they were blown and the previous owner just disconnected them instead of replacing them

 

[BarnFinder75]

where does the harness run? and are they fed from the same place?

 

[blueflamed03]

pull rear panel off, disconnect sub, and hook up a known working speaker, even if it's a 4" coax, just to see if you have power to that sub. If you do, simply replace blown woofer.

 

[BarnFinder75]

i checked all connections in the rear, they were all ok, i have pulled the amp from behind the glove box, is there any way to test it? would this be the likely culprit or the HU perhaps? this thing is driving me nuts

 

[BarnFinder75]

ok, let's try a different approach, can anyone help me with the color codes on the wiring? how about which side of factory amp is input and output?