Skip the auto shop - Our mechanics make house calls

Q: The turn signal is working intermittently

asked by on

I have a 97 gmc sierra and every now and then I'll go to turn and get nothing the turn signal switch will go down for a left turn and stay there with no dash blinker lighting up, and no lights on the front or rear blinking but after the turn it clicks and flips back up. Is this a switch problem? I'll normally go out for 10 mins and then start working again when I select left or right the arrows on the dash blink slow and constantly when it's working.

My car has 235567 miles.
My car has a manual transmission.

The combination switch relies on the signal/flasher relay for power. This relay controls both the signal lights and the hazard lights. The relay itself can be at fault even if the hazard lights are working properly. If the relay is functioning properly, the switch may be at fault. The combination switch can fail in a number of different ways. Sometimes the signals will not flash. Other times it can effect the headlights - low beams not functioning but high beams work. If the relay does not solve the issue, have a certified technician [inspect or replace the turn signal switch

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. The turn signal is working intermittently

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Air conditioner makes clicking sound when truck turns on, low air pressure unless max AC is used

When the engine turns on, if the A/C switch is off, the compressor clutch is not engaged so the only "noise" should be from the compressor pulley freewheeling. If the air flow is too low at the lower blower speeds,...

Q: Turn signals not flashing.

This is a common issue with many Ford vehicles. The faulty part would be your multifunction switch or turn signal switch. There is a mechanism that causes the switch to lock in place during a turn inside the switch that...

Q: Bluetooth works engine off

Hello. EMI (electromagnetic interference) is electromagnetic energy that is passed through electronic devices. EMI is disruptive and can affect bluetooth devices and/or your GMC Safari's electronic system if not properly shielded. This is not a common problem, but it is...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.