hows it goin? ive had the same problem wit my 05 chevy did u install the radio or did a shop??? on 03 anf newer gm u have to put a brain box(idk if that the actual name of it but thats wat i call it) in wen u put a aftermarket radio/cd player inthats wat the problem was wit mine the brain box had a short in it ... i had mine hooked up without a brain box but it got rid of my door chimes completly and the radio would turn off with the ignition

 

Make sure every thing is connected...the door chimes on the NNbS trucks works via the radio/Onstar....any time you install an aftermarket deck you need an adapter to retain the door chimes etc..

 

i have the 06 silverado and if you dont have onstar you dont need the adapter, you just loose the door chime, for me i was happy not to have that.

 

i have the 06 silverado and if you dont have onstar you dont need the adapter, you just loose the door chime, for me i was happy not to have that.

Yes and no....if you don't install the PAC adapt you lose all warning sounds ie turn signal click, seat belt chime, door chimes. Etc...

 

You always need the pac adapter from 2003 to 2011 always, if you don't use it the BCM can turn on the thef systen and lock the ignitions system in the worse case,
you first will lose the warnings, lights on, door open, key on the ignition, low fuel, air bag warnings, couple of months later the airbags stop working and vehicle gets hard to start in the mornings

 

You always need the pac adapter from 2003 to 2011 always, if you don't use it the BCM can turn on the thef systen and lock the ignitions system in the worse case,
you first will lose the warnings, lights on, door open, key on the ignition, low fuel, air bag warnings, couple of months later the airbags stop working and vehicle gets hard to start in the mornings

I have never heard of that.. I don't have it on my 08 and have had no problems that you describe ...i dont have my seat belt chimes door chimes or onstar..but thats not a problem!

 

You always need the pac adapter from 2003 to 2011 always, if you don't use it the BCM can turn on the thef systen and lock the ignitions system in the worse case,
you first will lose the warnings, lights on, door open, key on the ignition, low fuel, air bag warnings, couple of months later the airbags stop working and vehicle gets hard to start in the mornings

Uh....completely unrelated to the harness kit. sstoner is completely right about not using the PAC mod

To the initial poster. You probably have a GMCO in your truck. Do I have onstar and Bose? The GMCO was one of the first solutions for interfacing with the CAN system (notice I didn't say CAN-BUS system which is the revised version of the CAN system, the CAN system came out in 03 and the CAN-BUS system was released in 04, the GMCO harness interface doesn't work very well with the CAN-BUS system.). Back to the point. The GMCO modules have a notorious failure rate that cause symptoms like you are describing.

 

I'm having about the same issue. Radio and chime almost completely stopped working. What is this gmco mod, where can I find it? I googled GMCO module and it didn't pull up anything called gmco. Only like PCM, ECM, ECU and alike.

 

Do you have an aftermarket radio, or GM factory?

 

aftermarket kenwood. I believe i figured it out earlier. Its the little chime box. I can tap on it and it starts working. its a 2003 gmc sierra 1500 4.3l, btw

 

hey goodmorning fellas i recently just bought a 2008 gmc yukon xl slt the message board on the cluster that shows the miles went out and then the PRNDL side is super dim where you can barley see it ive noticed the door chims are super low and that only the tweeters and the rear speakers are working eveything was perefect untill yesterday ive check all my fuses and im stumped beacuse it was just fine so if anyone has any way in direction on what next i should be looking for please let me know thank you guys so much