GM Service Manual Online
For 1990-2009 cars only

Low Beam Headlamps Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: Low beam headlamps are inoperative, high beams are functional.

1

Were you sent here from the Headlight System Check?

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Go to Step 2

Go to Headlight System Check

2

  1. Disconnect connector C209.
  2. Connect a fused jumper wire in the harness side connector C209, between terminals W and L.

Do the low beam headlamps illuminate?

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Go to Step 4

Go to Step 3

3

  1. Remove one of the low beam headlamp fuses.
  2. • HDLOBML MiniFuse® #10
    • HDLOBMR MiniFuse® #8
  3. Connect a DMM from the fuse terminal B in the underhood electrical center, to the harness side connector C209 terminal L.
  4. Measure the resistance of circuit 12.

Is the resistance within the specified values?

0-2 ohms

Go to Step 5

Go to Headlamps Inoperative - One Lamp

4

Replace the headalamp switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the repair complete?

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Go to Headlight System Check

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5

Repair the open in circuit 12.

Is the repair complete?

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Go to Headlight System Check

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