The Best GM Alternators

Part of your vehicle's charging system, your GM alternator turns mechanical energy into electricity, charging your battery and running many electrical systems. In short, it powers your dash lights and displays, power windows, steering, heated seats, windshield wipers, entertainment system, and more.

To produce the power these systems need, though, your alternator needs to generate current. How that process works is simple. Your engine runs a belt and pulley, which turn a rotor shaft and magnetic coils. The coils produce AC power, which a rectifier on the alternator captures and turns into DC power.

Unfortunately, alternator failure happens. The causes of it include installing incompatible accessories, bad jump-starts, and worn or damaged alternator parts. Luckily, the signs of problems with an alternator are pretty easy to spot. Look for headlight and car radio malfunctions, charging system issues, or a dead battery, smell for burning under your hood near the alternator or your battery, and listen for a whining engine.

If you see any such symptoms, do an inspection that includes a charging system test. If alternator trouble turns out to be the case, replace yours immediately. Otherwise, install a new alternator about every 80,000 to 150,000 miles. That's about every 7 years. You'll find more details on that in your owner's manual.

Repair Your GM Charging System | Order a Genuine OEM Alternator Online

The alternators GM makes are designed compatible with its brands and models from the start, guaranteed. So, you shouldn't buy anything else. You're in luck: you can order GM alternators right here online at our auto parts store. We'll ship immediately, right to your door, so you can take care of repairs in no time.