The cooling fan on mthe factory installed radio has been the source of the irritating whine I have been hearing. Truck is a 1997 1500 GMC. There is a small 1" square by about 3/8" thick muffin style fan fastened to the radio chassis. I talked to the GMC dealership and all they would say is bring the truck in and they will handle it, most likely by pulling the radio and having their repair shop replace the fan. I can easily replace the fan and pull the radio if I could only find a fan....Anyone have a source of these small muffin fans..........any of the 1" square fans I have found are all 5 VDC, and I need a 12 VDC.........
I may just cut in a small toggle switch to shut it off when not in use, as its making such a fuss now its a pain to set in the truck without having the radio going to drown out ther sound of the fan.
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