GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Headlamps Diagnostic System Check?

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Go to Step 2

Go to Headlight System Check

2

  1. Disconnect the turn/hazard headlamp switch connector C1.
  2. Connect a 20-amp fused jumper between connector C1 terminal B and terminal C (if the fuse blows, test CKT 12 for a short to ground).

Are the low beam headlamps on?

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Go to Step 3

Go to Step 4

3

Replace the turn/hazard headlamp switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Standard.

Is the repair complete?

--

Go to Headlight System Check

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4

Test CKT 12 for an open.

Repair if necessary. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Headlight System Check

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