Well, you can disconnect the suspected component to see if the RFI
If it is the ABS (it may be conducted noise) then you can try Ferrite beads
on all the wiring harness's to the module.
Another route you can take is to hook up the radio to a open ended coax
cable (recieve only) and prob around the vehicle to find a rfi hot spot. Its
better to find the exact location of the RFI.
Looking for information on how to fix a Radio Interference (RFI) emission
from a 2003 Yukon.
RFI is there, on the 2 way if the vehicle is ON or OFF.
Spud: davidaanderson and that would be at shaw and a dot then ca