Just did the torque converter, luckily we have GMPP 2005 N* AWD 62000 miles. Now a hum has started. Not the radio, not the Load Level compressor. Think it is a fuel pump issue, sound like a tuning fork (constant tone pitch) sometimes louder, we hear it when we are stopped moving and when I hear it and shut off the ignition it goes away. Wife claims she hears it lower and behind her. going to wait until it is more consistent then we will bring it in.