GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check for Starting and Charging?

Go to Step 2

Go to Diagnostic System Check - Engine Electrical

2

Turn ON the ignition, with the engine OFF observe the Charge indicator on the instrument cluster (IPC)

Is the charge indicator illuminated?

Go to Symptoms - Engine Electrical

Go to Step 3

3

  1. Turn OFF the ignition.
  2. Disconnect the generator connector.
  3. Connect a 3 amp fused jumper wire between the charge indicator control circuit and a good ground.
  4. Turn ON the ignition, with the engine OFF.

Does the charge indicator remain OFF?

Go to Step 4

Go to Step 5

4

Test the Charge indicator control circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

5

Inspect for poor connections at the harness connector of the generator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 8

Go to Step 6

6

Replace the generator. Refer to Generator Replacement .

Did you compete the replacement?

Go to Step 8

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7

Important: Perform the set up procedure for the PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement and Powertrain Control Module Replacement/Programming in Engine Controls.

Did you compete the replacement?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3