GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Engine Electrical Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Engine Electrical

2

  1. Turn ON the ignition, with the engine OFF.
  2. Observe the Charge indicator on the instrument cluster (IPC)

Does the charge indicator illuminate?

Go to Step 3

Go to Symptoms - Engine Electrical

3

  1. Turn OFF the ignition.
  2. Disconnect the generator connector.
  3. Turn ON the ignition, with the engine OFF.

Does the charge indicator remain illuminated?

Go to Step 4

Go to Step 5

4

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

Did you find and correct the condition?

Go to Step 7

Go to Step 6

5

Replace the generator. Refer to Generator Replacement .

Did you complete the replacement?

Go to Step 7

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6

Important: Perform the set up procedure for the PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement 2.2l or Powertrain Control Module Replacement 4.3l, Engine Controls.

Did you complete the replacement?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3