GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition ON with the engine in RUN.
  2. Disconnect the wire harness at the generator and the ground L terminal.

Is the indicator on?

--

Go to Step 4

Go to Step 2

2

  1. Check for an open in CKT 225.
  2. Repair any open circuit.

Does the indicator go on?

--

Go to Charging System Check

Go to Step 3

3

  1. Check for a burned out indicator bulb.
  2. Are the bulbs serviceable?
  3. Replace as needed

Does the indicator go on?

--

Go to Charging System Check

--

4

Replace the generator. Refer to Generator Replacement .

Did you find and correct the condition?

--

Go to Charging System Check

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