GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Charging System Check?

Go to Step 2

Go to Charging System Check

2

  1. Disconnect the generator connector.
  2. Turn the ignition switch to the ON position.

Does the charge indicator light?

Go to Step 4

Go to Step 3

3

Repair or replace the generator. Refer to Generator Replacement and Generator Overhaul to .

Is the repair complete?

Go to Charging System Check

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4

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the DRL control module connector.
  3. Turn the ignition switch to the ON position.

Does the charge indicator light?

Go to Step 6

Go to Step 5

5

Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement in Lighting Systems.

Is the repair complete?

Go to Charging System Check

--

6

Test for a short to ground in the WHT/RED wire between the instrument panel cluster and the generator.

Was a short found?

Go to Step 7

Go to Step 8

7

Repair the short. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Charging System Check

--

8

Repair or replace the instrument cluster printed circuit.

Is the repair complete?

Go to Charging System Check

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