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

Do the LH turn lamps operate properly?

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Go to Step 3

Go to Turn Signal Lamps and Indicators Inoperative - One Side

3

  1. Disconnect the instrument cluster connector C1.
  2. Connect a DMM from the instrument cluster connector C1 cavity B12 (LT BLU) to ground.
  3. Turn the ignition switch to the ON position.
  4. Move the turn signal switch to indicate a LH turn.

Did the voltage change with the LH turn signal lamps within the specified range?

10-15 V

Go to Step 4

Go to Step 5

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the instrument cluster replacement complete?

--

Go to Exterior Lights System Check

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5

Repair the open in CKT 14 (LT BLU) between C201 and the instrument cluster. Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Exterior Lights System Check

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