GM Service Manual Online
For 1990-2009 cars only

Voltmeter Reading High/Low

Step

Action

Value(s)

Yes

No

DEFINITION: Voltmeter Indicates High Or Low Voltage

1

Start the vehicle.

Connect a test voltmeter across the battery terminals.

What is the voltage reading?

12 -16 volts

Go to Step 2

Go to Step 3

2

Replace the instrument cluster. Refer to Instument Cluster And Gages, Section 8C.

Is the repair complete?

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System OK

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3

Perform Generator Diagnosis. Refer to Generator Assembly Bench Check , or Generator Assembly Bench Check

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System OK

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