GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

TOOLS REQUIRED: J 39200

1

  1. Start the vehicle.
  2. Connect a J 39200

Is the voltage reading within specifications?

12.0 - 16.0 V

Go to Step 2

Go to Step 3

2

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the replacement complete?

--

Go to Charging System Check

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3

Inspect the generator. Refer to Generator Assembly Bench Check .

Is the repair complete?

--

Go to Charging System Check

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