Posted on 3/1/2026
Your vehicle’s engine is an engineering work of wonder with many complex parts working in harmony to get you down the road. One of those simple but important components is called a serpentine belt. It is driven by a pulley on the engine and transfers that power to many of your engine’s most important components. The serpentine belt may drive the alternator, water pump, power steering pump and air conditioning compressor. When it’s working like it should, you won’t even notice the serpentine belt. But when it starts to fail, you may hear a squealing noise coming from under the hood as the belt starts slipping. Heat and time take their toll on the serpentine belt, causing it to crack or even to start shredding. When this happens, it may not drive your alternator correctly, and your battery light may come on. If the water pump isn’t turning, your engine may overheat, causing the heat gauge to show hotter than usual. When t ... read more