Skip the auto shop - Our mechanics make house calls

Q: Stalls intermittently when making left/pushing down on turn signal

asked by on

My wife drives a 2016 GMC Terrain Denali. It has about 12000 miles on it. Intermittently when she is pushes down on the left turn signal the vehicle stalls. The car goes completely dead. Dash lights and everything she says turns off. The problem is so intermittent that sometimes it may happen once a month and then go a couple of months without doing it.

I have asked my wife what other variables exist when this happens and she could only recall the radio being on when this occurs.

My wife is getting scared to drive this car. This is our third GMC and we love them.

We have taken it back to our GMC dealer several times. They are trying hard to duplicate the issue but no luck yet.

My car has 12000 miles.
My car has an automatic transmission.

Hello there. I experienced a similar situation a few years ago with a Chevrolet Suburban. In that case, the cause was an electrical fault within the steering column and the turn signal switch. When the switch was pushed upward (to make the right turn), it pinched an ignition wire and created a brief electrical short; which disabled the ignition system. We found this problem while replacing a ignition lock cylinder after the owner lost their car keys; so it was sheer luck to be honest. This was an older Suburban so it’s unlikely that your newer GMC is experiencing a similar problem, but it may be a possibility. With only 12,000 miles, this should be covered under your warranty, so I would try to work with the dealership to resolve this issue as it could be a serious safety and possible liability problem.

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
  1. Home
  2. Questions
  3. Stalls intermittently when making left/pushing down on turn signal

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: Mudguard destroyed under my left front bumper

Hello, thanks for writing in about your 2016 Hyundai Accent. You will be ok driving it around. Your mudguard does not serve a critical function that would otherwise prevent you from driving your car safely. If you'd like some peace...

Q: AC blowing hot air.

Hello! A malfunctioning air conditioning system can be caused by several scenarios. A simple fuse can be the culprit, as well as a broken drive belt. I don't have much information from you, so I will recommend you have a...

Q: 2007 GMC Sierra 1500 - Squeaking noise when turning right inspection cost?

Hello. If the vehicle has been sitting it is usually from corrosion built up on the brakes. The corrosion or dust can build up on the pads and rotors and cause this to occur. To fix this I usually remove...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.