GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Place the hazard switch in the ON position.
  2. Observe the hazard lamps.

Do the hazard lamps illuminate and flash?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Do the vehicles turn signals operate properly?

Go to Step 4

Go to Symptoms - Lighting Systems

4

Replace the multifunction switch. Refer to Turn Signal Multifunction Switch Replacement .

Did you complete the replacement?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3