GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Turn the ignition to the ON position.
  2. Place the hazard lamp switch to the ON position.

Do all of the turn signal tamps flash on and off?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Inspect the STP HZD Fuse.

Is the fuse open?

Go to Step 4

Go to Step 5

4

Repair a short to ground in the hazard switch battery feed circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

System OK

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5

Disconnect the hazard lamp/turn signal lamp flasher.

Using a test lamp connected to a known good ground, probe the hazard switch battery feed circuit.

Does the test lamp illuminate?

Go to Step 7

Go to Step 6

6

Repair a poor connection or an open in the hazard switch battery feed circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

System OK

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7

Replace the hazard lamp/turn signal lamp flasher.

Did you complete the repair?

System OK

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