I installed a AVIC D1 in a 2005 Chevy Silverado with the Bose, Sub & Speakers and now there is a humming noice when the unit is on or off and still there if the truck in NOT running... Any Suggestions???

what interface module did you use , most of them have a gain control adjustment and if its too high there will be some abnormal sounds. i would also check my grounds and make sure they are low resistance. is your bose amp turned on thru a data signal or is it a remote turn on. on the digital bose amps you only use the front inputs, fading is done thru the digital signal of the amp. i have also narrowed down noises by unplugging one rca at a time to locate the noise and sometimes needed a gli. good luck

I used the RCA Inputs, but from the original Pioneer deck that was put in, but front and rear was used, there is no interface except the GM Aftermarket Doorchime bypass, the grounds seem to be ok, used both the harness and the dash ground

you mentioned the module is a chime module. what is the part number. metra has a module for the bose system. it is the gm-oso4. you mentioned using the rcas from another unit that was in the truck, did someone use a line level adaptor instead of the bose interface ? it is also possible that the other unit was a common shielded ground on the rcas and the new unit is balanced signals. have you tried taking a lenght of wire grounded at one end and touching it to the shield of the rca? i have found this to help test the input of the amp circuit. other than that is there a gain on the chime or the loc, maybe its set to high. good luck