GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

  1. Turn the headlamp switch to the HEAD position.
  2. Turn the headlamp dimmer switch to the HIGH position.
  3. Using a test light, backprobe between the harness connector C201 terminal E5 and ground.

Does the test light illuminate?

Go to Step 3

Go to Step 2

2

Replace the headlamp dimmer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Has the repair been made?

Go to Headlight System Check

--

3

Repair the poor connection or an open in circuit 11 between C201 terminal E5 and S103.

Has the repair been made?

Go to Headlight System Check

--