GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Battery indicator stays on when engine is running.

1

  1. Turn OFF the engine.
  2. Disconnect the BRN (25) wire connector from the generator. If equipped with dual generators disconnect both generators.

Does the battery indicator remain lit?

--

Go to Step 3

Go to Step 2

2

Replace the generator(s). Refer to Generator Replacement or Generator Replacement

Does the battery indicator remain lit?

--

Go to Step 4

System OK

3

  1. Disconnect the connector at the instrument cluster.
  2. Connect a self-powered test lamp between the generator connector cavity B (W/100 amp generator) or cavity L (W/124 amp generator) and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

4

Locate and repair the short to ground in BRN (25) wire between the instrument cluster and the generator(s).

Is the repair complete?

--

System OK

--

5

Replace the instrument cluster. Refer to Instrument Cluster And Gages, Section 8C.

Is the repair complete?

--

System OK

--