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 ignition switch.
  2. Disconnect the generator connector.
  3. Turn ON the ignition switch.

Does the battery indicator remain lit?

--

Go to Step 3

Go to Step 2

2

Replace the generator. Refer to Generator Replacement.

Does the battery indicator stay on all the time?

--

Go to Step 4

System OK

3

  1. Locate and repair a short to ground in BRN (25) wire from the generator connector to the I/P cluster connector.
  2. If BRN (25) wire tested OK, replace the I/P cluster.

Is the repair complete?

--

System OK

-

4

  1. Turn OFF the ignition switch.
  2. Connect an ohmmeter between the I/P cluster connector BRN (25) wire cavity B16 and ground.

Does the ohmmeter show the resistance above the specified value?

10 ohms

Go to Step 5

Go to Step 6

5

Replace the I/P cluster.

Is the repair complete?

--

System OK

--

6

Locate and repair a short to ground in BRN (25) wire from the generator connector to the I/P cluster connector.

Is the repair complete?

--

System OK

--