GMC Sierra Alternator

Your GMC Sierra is versatile as a family vehicle and a heavy-duty hauler. Make sure your battery has the power to get you to any destination by investing in a GMC Sierra alternator from AutoZone. It produces consistently and has a steady voltage output so your battery is always at 100 percent.

AutoZone's alternator for GMC Sierra plays an essential role in your truck's performance. Low voltage robs your accessories of the power they require for full functionality. The wires within the alternator cut through a magnetic field, inducing the electrical current the engine needs. Shop for Sierra performance alternators from AutoZone, as well as the equipment for the job, during your next trip to your local store. Our Loan-a-Tool program and employee advice make DIY installation a cinch, and our online ordering comes with Same-Day Store Pick-up to suit your schedule.

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1-22 of 22 Results

1-22 of 22 Results

      YEAR RANGE FOR GMC SIERRA BY MODEL

      2021 GMC Sierra Alternator2017 GMC Sierra Alternator2015 GMC Sierra Alternator2013 GMC Sierra Alternator2010 GMC Sierra Alternator2008 GMC Sierra Alternator

      Customer

      Reviews

      Reviews for

      Looks COOL

      Chriz

      in 3 years

      The new alternator looks cool and is lot beefier than the old stock one. Appears to be working just fine. Went in easy. If this one will last 15 years like the stock one did I’ll be happy.

      What kind of vehicle do you drive? 2005 GMC SIERRA

      The new alternator looks cool and is lot beefier than the old stock one. Appears to be working just fine. Went in easy. If this one will last 15 years like the stock one did I’ll be happy.

      What kind of vehicle do you drive? 2005 GMC SIERRA

      Reviews for

      Great product

      Patrick

      in 2 months

      The alternator I bought was the exact fit. It went in easy, I had the job done in less than 20 minutes. The employee was very knowledgeable.

      What kind of vehicle do you drive? 2006 GMC Sierra

      The alternator I bought was the exact fit. It went in easy, I had the job done in less than 20 minutes. The employee was very knowledgeable.

      What kind of vehicle do you drive? 2006 GMC Sierra

      Reviews for

      Nice Product and Works Very Well

      Draco

      in a month

      Originally bought the standard one, it failed in a week. This one was heavier and fit much better as well. Note it is a very tight fit when it goes back on the bracket, so be prepared

      What kind of vehicle do you drive? 1998 GMC Sierra C1500 5.0L

      Originally bought the standard one, it failed in a week. This one was heavier and fit much better as well. Note it is a very tight fit when it goes back on the bracket, so be prepared

      What kind of vehicle do you drive? 1998 GMC Sierra C1500 5.0L