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. Connect a fused jumper from the generator connector terminal 2 to ground.
  3. Turn the ignition switch to ON.

Does the charge indicator light?

--

Go to Step 3

Go to Step 4

3

Remove the generator and replace the IC regulator. Refer to Generator Replacement and Generator Overhaul .

Is the repair complete?

--

Go to Charging System Check

--

4

  1. Inspect the charge indicator bulb and replace as necessary.
  2. Connect a fused jumper between the instrument cluster connector 1 terminal 1 and ground.

Does the charge indicator light?

--

Go to Step 5

Go to Step 6

5

Repair the open in the WHT/RED wire between the instrument cluster connector 1 terminal 1 and the generator. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Charging System Check

--

6

Test for an open in the BLK/WHT wire between the instrument cluster connector 1 terminal 2 and the junction block (including S241 and S242).

Was an open found?

--

Go to Step 8

Go to Step 7

7

Inspect the instrument cluster printed circuit for cracks and bad connections. Repair or replace as necessary.

Is the repair complete?

--

Go to Charging System Check

--

8

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

Is the repair complete?

--

Go to Charging System Check

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