GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire exterior lights system check performed?

--

Go to Step 2

Go to Exterior Lights System Check

2

  1. Connect a test light between C216 terminal K and ground.
  2. Turn the hazard switch on.

Does the test light flash off and on?

--

Go to Step 3

Go to Step 4

3

Replace the turn/hazard switch assembly. Refer to Hazard Warning Switch Replacement

Is the repair complete?

--

Go to Step 9

--

4

Connect a test light between the hazard lamp flasher terminal B and ground.

Does the test light flash off and on?

--

Go to Step 5

Go to Step 6

5

Repair a poor connection or open in circuit 27.

Is the repair complete?

--

Go to Step 9

--

6

Connect a test light between the hazard lamp flasher terminal A and ground.

Does the test light flash off and on?

--

Go to Step 7

Go to Step 8

7

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

Is the repair complete?

--

Go to Step 9

--

8

Repair a poor connection or open in circuit 140.

Is the repair complete?

--

Go to Step 9

--

9

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all repairs been made?

--

Go to Exterior Lights System Check

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