GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Headlights System Check?

--

Go to Step 2

Go to Headlight System Check

2

Disconnect the headlamp dimmer switch at the steering column C201 connector.

Do the high beam headlamps remain lit?

--

Go to Step 3

Go to Step 4

3

Repair the short to voltage on CKT 11 (LT GRN) between the headlamp dimmer switch and the headlamps.

Is the repair complete?

--

Go to Headlight System Check

--

4

  1. Reconnect the headlamp dimmer switch C201 connector.
  2. Disconnect the headlamp and panel dimmer switch.

Do the high beam headlamps remain lit?

--

Go to Step 5

Go to Step 6

5

Repair the short to voltage in CKT 10 (YEL) between the headlamp dimmer switch and the headlamp and panel dimmer switch.

Is the repair complete?

--

Go to Headlight System Check

--

6

Replace the headlamp and panel dimmer switch Headlamp Switch Replacement .

Is the replacement complete?

--

Go to Headlight System Check

--