GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Turn the ignition to the RUN position.
  2. Turn on the hazard lamps.
  3. Turn off the hazard lamps.
  4. Turn on the right turn signal.
  5. Turn on the left turn signal.

Do the hazard lamps and the turn signal lamps flash?

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

Go to Step 3

3

Test for and repair a poor connection at C216. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and repair a poor connection?

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Go to Step 5

Go to Step 4

4

Replace the turn/hazard switch assembly. Refer to Turn Signal and Multifunction Switch Assembly - Disassemble - Off Vehicle and Turn Signal and Multifunction Switch Assembly - Assemble - Off Vehicle in Steering Wheel and Column - Tilt.

Did you complete the replacement?

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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