To fix a squealing belt in a 2007 Hyundai Elantra, first, inspect the serpentine belt for signs of wear, cracks, or damage. If it's worn, replace it with a new one. Additionally, check the belt tensioner and pulleys for proper alignment and function; if they are faulty, they may need to be replaced or adjusted. Finally, ensure that any oil or coolant leaks are addressed, as these can contribute to belt slipping and squealing.
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