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What would cause a high squealing noise just when my car is backing up?

Answers from the Automotive Experts

Amanda J. Pierce, MBA Lynn, You may need to have your main serpentine belt inspected, this sometimes causes a squealing sounds in relation to wear on the underside that rides on the pulley

Audra Fordin, Owner at Great Bear Auto Shop Hello Lynn, When you are backing up, are you turning the steering wheel when you hear the noise? Is the sound constant, or does it usually happen only after the car sits for sometime? Is the sound as you are pressing on the gas? Or on the brake? Once you pinpoint when you are experiencing the trouble, you will be able to find the answer. Mechanically yours, Audra

Laurie Sarno, Co-Owner at Super Girls Auto Hello Lynn- best guess would be a brake or transmission issue - without any more detailed information I cannot give you a better answer- sorry could not help more- Super Girls Auto.

Lori Johnson, Owner and Instructor at Ladies Start Your Engines Dear Lynn, It*s possible that you*re hearing noise from the rear brakes. If it doesn*t seem to be related to the speed of the engine I would check there first. Sometimes the brake shoes ride against the brake drum and make noise when you are in reverse and you don*t hear anything when you*re going forward. It may be a normal noise, but have it checked to be sure. Lori Johnson

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