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 OFF the ignition.
  2. Turn ON the ignition, with the engine OFF.
  3. Observe the battery charge indicator on the instrument cluster (IPC) during the bulb check.

Does the battery charge indicator illuminate during the bulb check?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement .

Did you complete the repair?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2