An alternator keeps the battery in your vehicle charged and running while you drive. Powered by the mechanical output of the crankshaft, the alternator transforms that power into electrical energy. If you alternator becomes faulty or damaged, your vehicle won't be driving smoothly for long. A dead battery might not always be the most simple answer! If the alternator is the part at fault, shop our online warehouse to find the OEM-quality alternators you need to get your GM vehicle back on the road. 

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