GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you review the following and perform the necessary inspections?

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Go to Step 2

Go to Symptoms - Engine Electrical

2

Start the engine.

Does the battery charge indicator remain illuminated after the engine is started?

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Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Install a scan tool.
  2. With a scan tool, observe the Battery Voltage parameter in the engine data list.

Does the voltage measure within the normal operating range?

10-15 V

Go to Step 4

Go to Charging System Test

4

Test the charge indicator control circuit for a short to ground. Refer to Circuit Testing or Wiring Repairs .

Did you find and correct the condition?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3