I have a 2003 Tahoe with Premium Bose speakers, i installed an Alpine 9815 deck and a DCGM09 door chime module, i am getting a very annoying engine noise whining and feedback from my speakers. Origonally i didnt have the DCGM09 installed and i was getting minor engine noise and feedback, but after i installed the DCGM09 it dramatically worsened. ANy ideas???

 

Grounded improperly or unshielded wire would be my guess.

 

I agree. Since it's an aftermarket radio my guess would be an insufficient ground.

Are you getting the whining with regular radio play or is it an ipod connection?

 

OK i reran the ground wires today, i am still picking up the engine whining. It comes on all, radio, xm and CD. It is driving my CRAZY! i even exchanged the DCGM09 to see if that was the problem, still same results... plzz help me before i rip this raoio out haha..

 

Your Scosche DCGM09 is connected to your stereo via the RCA jacks, I would install a Ground Loop Isolator at this connection next.

 

Do i need 1 or two ground loop isolators?

 

Any other ideas of what might help this problem???

 

could be the speaker wires are not connected properly, ie rear/front left- mixed up, I had a similar issue.

 

ok so pretty much my mom has an 03 tahoe lifted yada yada my dad installed a pioneer premier avic-f90bt
(heres a link http://www.amazon.com/Pioneer-F90BT-.../dp/B001BJ6JQS )

now she has a wining noise through out the car its even comming out of the subwoofers any input from what i think its a bad ground but where could i ground the radio to? like i beleive he grounded it through the wire harness but i figured if i find another place to ground the radio it would fix the problem so

input people and if so locations?

 

May want to look at installing an inline noise filter in addtion to checking the grounding.
Also check the battery ground as well as the connection from the alternator to the battery for good solid connections...