GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire exterior lights system check performed?

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Go to Step 2

Go to Exterior Lights System Check

2

  1. Turn the ignition switch to the RUN position.
  2. Using a test light, backprobe between C216 terminal L and ground.

Does the test light illuminate?

--

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

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4

Connect a test light between the turn signal 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 or an open connection in circuit 16.

Is the repair complete?

--

Go to Step 9

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6

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

Does the test light illuminate?

--

Go to Step 7

Go to Step 8

7

Replace the turn signal lamp flasher. Refer to Turn Signal Flasher Replacement

Is the repair complete?

--

Go to Step 9

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8

Repair a poor or an open connection in circuit 141.

Is the repair complete?

--

Go to Step 9

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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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