GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lamps System Check?

--

Go to Step 2

Go to Interior Lamps System Check

2

Disconnect the headlamp and panel dimmer switch connector.

Does the instrument panel lamps remain lit?

--

Go to Step 3

Go to Step 4

3

Remove the ILLUM fuse (Fuse 14).

Does the instrument panel lamps remain lit?

--

Go to Step 5

Go to Step 6

4

Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement .

Is the replacement complete?

--

Go to Interior Lamps System Check

--

5

Repair the short to voltage in CKT 8 (GRY) between the headlamp and panel dimmer switch and the instrument panel lamps.

Is the repair complete?

--

Go to Interior Lamps System Check

--

6

Repair the short to voltage in CKT 44 (DK GRN) between the headlamp and panel dimmer switch and the instrument panel fuse block.

Is the repair complete?

--

Go to Interior Lamps System Check

--