GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

Schematic Reference: Starting and Charging Schematics

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 five second bulb check?

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Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

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

Does the voltage measure within the normal operating range?

10 V-15 V

Go to Step 4

Go to Charging System Test

4

Test the charge indicator ground circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

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