GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

SCHEMATIC REFERENCE: Exterior Lights Schematics

1

Did you perform the Lighting System Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Connect a test lamp between the hazard flasher switch power feed circuit and a good ground.

Does the test light illuminate?

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Go to Step 3

Go to Step 4

3

Connect a test lamp between the hazard flasher switch power feed circuit and the hazard flasher switch ground circuit.

Does the test light illuminate?

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Go to Step 6

Go to Step 5

4

Repair the open or high resistance in the hazard flasher power feed circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 8

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5

Repair the open or high resistance in the hazard flasher switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 8

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6

Inspect for poor connections at the hazard flasher switch connector. Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 7

7

Replace the hazard flasher switch. Refer to Hazard Lamp Flasher Replacement .

Did you complete the replacement?

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Go to Step 8

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8

Operate the system in order to verify the repair.

Did you find and correct the condition?

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System OK

Go to Step 2