In this guide, you will learn about common problems that cause Chevy battery light to stay on.

You will also find instructions on how to test the Chevrolet battery and charging system yourself.

Chevy battery light comes on when there is a problem with the charging system. The most common problem that triggers Chevy battery light to come on is a bad alternator or a faulty voltage regulator. Other issues include a bad battery, faulty instrument cluster, damaged wire harness, or loose contact. 

The first step in troubleshooting Chevrolet battery problems is to test the charging system including the battery and alternator.

Symptoms

List of symptoms you may notice when your Chevrolet battery light comes on: 

  • Low voltage - The alternator won't charge the battery
  • The car dies and won't start
  • Engine keeps dying after a few minutes
  • Engine cranks very slow
  • Random warning lights on the dashboard
  • Lights dim or flickering
  • Chevrolet stalls or is hard to start
  • Battery keeps on dying
  • Low Battery Warning on DIC

Common Causes

If your Chevrolet battery light is on, your Chevrolet won't start, or the battery will not charge, the problem could be due to:

  • Bad alternator,
  • Bad battery
  • Poor ground connection(s)
  • Blown fuse
  • Bad relay
  • A parasitic draw.

How to Test the Chevrolet charging system

To find out why your battery light is on, you should test the charging system.

Your mechanic can perform this test. Local auto parts stores may also perform this test free of charge.

You can also test the charging system yourself if you have the right tools. 

What you will need

Procedure

  1. Park your Chevrolet on level ground. Set the parking brakes and turn off the ignition.Chevrolet  test dead battery
  2. Pull the hood release under the dashboard and open the hood.
  3. Locate the battery. Newer Chevrolet vehicles have a plastic cover on top of the battery. If necessary remove the cover to access the positive and negative terminals of the battery.
    Chevrolet  check alternator
     
  4. Connect the red clamp on the positive battery terminal. The positive terminal will have the (+) stamped near the battery post.Chevrolet  Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche etc. charging system check
  5. Connect the negative clamp on the negative terminal.How to test battery, charger on Chevrolet  Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche etc.
  6. Perform a battery and alternator test procedure. Follow instructions on the analyzer. 

 

The charging system analyzer will be the starting point.

The charging system analyzer will only tell you which system is failing, but it won't tell you why. You need to do further troubleshooting to find out why your Chevrolet battery light is on. 

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