GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Charging System Check performed?

--

Go to Step 2

Go to Charging System Check

2

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

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 .

Is the repair complete?

--

Go to Charging System Check

--

4

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

Does the charge indicator light?

--

Go to Step 6

Go to Step 5

5

Replace the DRL control module.

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

--