GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Headlight System Check performed?

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Go to Step 2

Go to Headlight System Check

2

  1. Disconnect the connector at the headlamp switch.
  2. Disconnect connector C200 at the steering column.
  3. Connect an unpowered test lamp between connector C200, cavity E13 for CKT 10 (YEL), and ground.

Does the test lamp light?

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Go to Step 3

Go to Step 4

3

Repair the short to voltage in CKT 10 (YEL) between the following components:

    • The headlamp switch
    • The daytime running lamp control module
    • The headlamp dimmer switch

Do the low beam headlamps operate properly?

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Go to Headlight System Check

Go to Step 4

4

Replace the headlamp switch.

Do the low beam headlamps operate properly?

--

Go to Headlight System Check

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