The Chevy timing belt is responsible for regulating the camshaft and crankshaft, which operate on precision timing, alignment and coordination. Since the pistons move in and out of the cylinders, it is important that the valves open and close in response to the pistons with precise timing for proper engine function. The Chevy timing belt has teeth that grip the camshaft and crankshaft gears, and allows the camshaft to open and close the intake and exhaust valves in accordance with the pistons. If your Chevy timing belt snaps or stretches to the point that it slips off, it will result in the definite shut down of your vehicle. A defective timing belt may also possibly cause severe damage to your engine, on account of smashed pistons and bent valves resulting from pistons colliding into improperly timed open valves. Since its condition can sometimes be difficult to assess due to its limited access, regular maintenance is the best way to keep you off of the shoulder lane with a dead engine. It is good to know that, on average, timing belts should be replaced at about every 60,000 miles, with doing so at 100,000 miles really pushing the limit. Another important component that is dependent on your Chevy timing belt is the water pump. The water pump is responsible for cooling down your engine. So, if your thermostat is showing that your engine is overheating, the problem may lie in the fact that your Chevy timing belt has stretched out and is not able to grip the water pump gear. We suggest that you make the extra effort, and it can be a hassle, to check your Chevy timing belt periodically and when it is time to replace it, we can help you with your order through our secure site or our toll-free customer assistance phone number.