GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

While observing the charge indicator lamp (located in the instrument cluster), turn the ignition switch from OFF to ON.

The charge indicator lamp turns on for approximately 5 seconds, then turns off.

Charge Indicator Inoperative

2

While observing the charge indicator, start the engine.

The charge indicator lamp turns on for approximately 5 seconds, then turns off.

Charge Indicator Always On

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.