Diagnosing Common Problems with Your GMC Sierra 1500 Turn Signal Switch
You're driving on a dark road when the driver of the vehicle in front of you decides to turn. You were both doing 80, and you had to step on your brakes fast to avoid hitting the other car. You shake your head as you drive away and realize that he could have activated his turn signal before turning. Your GMC Sierra 1500 turn signal switch serves this very important safety function-it lets other drivers know that you're planning to turn so that an accident can be prevented. Once it fails, you should check if it can be repaired or replaced completely. Remember that activating your turn signal each time you change lanes is very useful. It will warn a driver of a car that you might not have seen because it was in your blind spot. Listed below are a few tips on diagnosing common problems with your turn signal switch:
Unusual clicking noises
The GMC Sierra 1500 is known to have a problem with the turn signal switch. Yours might develop a clicking sound coming from the flasher. When you deactivate your turn signal, the clicking noise should stop. However, a turn signal switch problem in your GMC Sierra can cause the noise to stay after the turn signals are deactivated. Inspect the condition of the turn signal switch and check if it needs replacing. It would be good to check for wiring problems as well.
Left or right turn signal lamp failure
This is unfortunately one of the most common issues found in most vehicles. Either one of the left or right signal lamp does not turn on when the turn signal switch is activated. This is usually attributed to a bad bulb or socket. If none of these two components are damaged, check the wire between the flasher and the column plug for any damage. You can also check if there are any bent or burned pins on the plug, and replace it if necessary. If none of these parts are compromised, you can check the column harness between the plug and the switch for cut connections or exposed wires. Finally, you can check if the turn signal switch itself is damaged and needs repairing or replacing.