Re: Squealing coming from under the middle of the car after shutdown?
The sound wouldn't be coming from the radio, right?
Some modules have cooling fans that continue to run after the vehicle is turned off. The radio usually is the most noticeable, and if the fan is noisy (defective) you will hear it.
2011 WK2 Overland Mineral Gray/Black, Advanced warning, V8; 2009 KK Rocky Mtn V6; 2000 WJ Laredo I6; 1979 CJ7 I6... green... miles of smiles :)