GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. Place the multi-function lever in the left turn position.
  3. Observe the left front park/turn lamp.

Does the left turn signal operate?

--

Go to Step 2

Go to Exterior Lights

2

  1. Remove the instrument cluster.
  2. Connect a test lamp from the instrument cluster connector terminal A12 to ground.
  3. Turn the ignition switch to the RUN position.
  4. Place the multi-function lever in the left turn position.

Does the test lamp blink on then off?

--

Go to Step 3

Go to Step 4

3

  1. Check for a poor connection at the instrument cluster terminal A12.
  2. If the connection is OK, replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

--

4

Repair the open in circuit 1414 (USA or Gulf States) or circuit 14 (Europe or Japan).

Is the repair complete?

--

System OK

--