GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the headlight system check performed?

--

Go to Step 2

Go to Headlight System Check

2

Does flash to pass (FTP) function normally in the headlight system check?

--

Go to Step 3

Go to Step 7

3

Do the DRL lamps operate normally?

--

Go to Step 4

Go to Step 6

4

  1. Turn the headlamp switch to the Head position and the headlamp dimmer switch to Low position.
  2. Using a test light, backprobe between connector C201 terminal W and ground.

Does the test light illuminate?

--

Go to Step 5

Go to Step 6

5

Repair poor connection or open in circuit 1750 between connector C201 terminal W and S283.

Has the repair been made?

--

Go to Headlight System Check

--

6

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

Has the repair been made?

--

Go to Headlight System Check

--

7

Repair the poor connection or open in circuit 1750 between S283 and ground.

Has the repair been made?

--

Go to Headlight System Check

--