Q: Whole thing shakes on the highway at high speeds, how does that happen?

asked by on

My 2014 GMC Sierra has just about 12,000 miles on it and whenever I am at highways speeds now, it just vibrates the whole time. This is really worrying in such a new car! When I am towing anything the shaking is even worse and that is a big part of the reason I bought this truck! What is the issue here, or is this just a lemon? I don’t want to put myself or my family in danger but I am not about to spend thousands repairing an expensive new truck!

This is an ongoing technical issue that GM has not found a fix for yet. There is a lot of speculation of what is causing the vibration, but until the engineers come up with a fix, I cannot recommend a fix at this time. The vibration is from the drive train and could be internal to the transmission or in the driveline assembly. Make sure you documented that you took to the dealer and they could not fix it. When GM does come up with a fix, it should not cost you for whatever the repairs may be.

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. Whole thing shakes on the highway at high speeds, how does that happen?

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: Truck stalls sporadically

Hello there. Thanks for writing in about your 2001 GMC Sierra 2500 HD. When faults occur after a repair has been made, the newly repaired item is usually the first place to check. A few possible causes for the stalling...

Q: Leaking coolant

If you have a coolant leak on your car it can normally be found by observing where it is leaking from to determine what the cause of the leak is. If it is leak from the front of the engine,...

Q: How do I remove the rear head restraints?

The rear head restraints are important safety features that should remain on in almost all circumstances. However, the rear head restraints can sometimes interfere with child restraint systems. If this is the case, you can remove the rear head restraints...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...