Q: Why does my 2014 Silverado drop voltage when I turn the steering wheel when it is on park?

asked by on

Also, the lights dim and then on the dash it says it's losing battery voltage then steering clocks then wants to turn off

My car has 63000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. GM has been using electric power steering on its most recent models for almost 10 years now. This is a relatively new system that offers a lot of benefit such as increased fuel mileage and reduced emissions, however it is still being fine tuned. One quick check to determine if the issue is mechanical or electrical is to remove the 60 amp fuse in the fuse box under the hood which removes the assist from the mechanical components. If the problem is present when the assist is disabled, the concern is likely a mechanical one. Here at YourMechanic, we can have a technician come to your home or office to inspect and diagnose this issue for you, and make or suggest the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Why does my 2014 Silverado drop voltage when I turn the steering wheel when it is on park?

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: Front Brakes sticking have had master cyclinder replace. Booster. Brake pedal. Button etc

Hi Jacob. Thanks for the question today. The brakes dragging could be from several causes. Most of the time, major brake components, such as the booster or master cylinder could have not been adjusted properly when installed. It is also...

Q: Engine went into "limp home mode with power train fault wrench indicated in dash. It will not accelerate. Not pulling any load.

Hi there. Your vehicle's wrench light, Check Engine Light and lack of performance go hand in hand. The vehicle's PCM (powertrain control module) has recognized a fault and put the vehicle into limp home mode. It could be, a throttle...

Q: Bottom-end knock in Chevy Trail Blazer

There is an easy way to test it. Pull all your fan belts off. If you pull the belts that are on it and the noise goes away then it can easily be the water pump. Then grab the water...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...