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Radio squeal in am radio when out on the hi way , ok when park brake is applyed and stoped. loud squeal and whisle in am radio in a 2007 freightliner s/t power unit . someboby please help''''' saskatoon

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Hi saskatoon, my name is John. Sounds like you have a mic. wire off the plug or loose.First try another mic. If its OK, then its the mic. Unscrew the mic plug from the radio, then remove the two(2) tiny screws at the end of plug, and one (1) tiny screw located about the middle of the plug, then carefully slide it backwards to expose the wiring, observe the wiring, if any wires are off, re solder them.........hope this was very helpful....

Posted on Sep 01, 2010

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Posted on Jan 02, 2017

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Occasionally your 2001 pathfinder will accelerate when the brakes are applied. And there is a very loud squealing of the tires with the lunching of the car.

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