GM Service Manual Online
For 1990-2009 cars only

Trailer Towing Indicator Always On Pontiac Export

Step

Action

Yes

No

Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Power and Grounding Connector End Views in Wiring Systems.

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Place the ignition switch in the ON position.

Is the trailer towing indicator on?

Go to Step 3

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

3

Operate the turn signals.

Do the turn signals operate properly?

Go to Step 4

Go to Diagnostic System Check - Lighting Systems

4

Disconnect the turn signal hazard flasher.

Is the trailer towing indicator on?

Go to Step 5

Go to Step 6

5

Test for a short to battery positive voltage on the trailer towing indicator signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems?

Did you find and correct the condition?

Go to Step 8

Go to Step 7

6

Replace the turn signal hazard flasher module. Refer to Hazard and Turn Signal Flasher Replacement .

Did you complete the replacement?

Go to Step 8

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7

Important: Perform the set up procedure for the IP.

Replace the Instrument Cluster Panel (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement and the set up procedure?

Go to Step 8

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8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2