Q: buzz in dash at 70 mph
In the last few weeks, my truck started making a buzzing sound in the dashboard at about 70 mph. Once you get up to 75 or 80 mph, it stops. It sounds like an electrical buzz from a relay, only much faster. What might cause that to happen?
Recommended Services
| Speedometer is not working Inspection | $94.99 - $114.99 | Get a Quote |
Hi there. This is very common on this vehicle. It is usually one of the electric motors in the dashboard that move the gauges. It is more than likely the speedometer motor as it seems to be related to vehicle speed. The instrument panel will need to either be replaced or rebuilt. There can also be a bad ground connection under the dash causing electrical interference, but the noise would seem to come from the speakers then. If you are going to get this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your speedometer issue and let you know what needs repair.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
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
What others are asking
Alternator went out; battery won't stay charged
I would first start with having your battery/starting system checked (https://www.yourmechanic.com/services/battery-will-not-hold-a-charge-inspection) by a certified technician. If the alternator turns out to be faulty, replacement will be required in order to get your vehicle in reliable running condition again. The technician...
Ticking and rattling after parts were replaced
It sounds to me like the valve timing is now incorrect. The pin that you are referring to might be an alignment pin of some kind. If the valve timing is not correct, this can cause the valves to tick...
Car won't start, needs ignition switch replacement - 2002 Isuzu Axiom
Looking at the Isuzu repair documentation, I see no service bulletins that would indicate a programming update for an extended crank or no-start condition although there are software enhancements all of the time and not necessarily a bulletin-related to the...
Can I use a battery charger designed for deep cycle batteries to charge a regular car battery?
Yes you can. A deep cycle battery is not much different from a regular battery except it is designed to give out a small amount of power over a long period where a regular battery is designed to give out...
Knocking noise from lower end of the motor. I was told it could be the flywheel
Hi there: Damage to the flywheel on a 2007 Chevrolet Trailblazer is highly unlikely unless you're experiencing serious transmission, acceleration or shifting issues. In most cases, a knocking sound will be caused by internal engine components that are experiencing lack...
Why won't my car start up?
Hello, thank you for writing in. If the vehicle is cranking over, as in the starter is turning over the eninge (but it fails to start) then you are looking at a fuel or spark issue. If you are testing...
Cyl 4 misfire 07 dakota 3.7l v6, did plugs, coil, injector, inspected lifters no kicked rocker arms, wondering best route of next
I can think of a couple of things that could potentially be causing this issue. If you have an intake manifold gasket leak near the number four cylinder, this can cause the cylinder to misfire. If the number four cylinder's...
Why would one of my belts in my 2004 Volvo S40 get really thin
Hello. If the belt itself suddenly got really thin that is usually because the belt is old and has become brittle. When this occurs the belt will crack and start to come apart. Most of the time it splits in...
Radiator not holding water
Replacing the radiator hoses (https://www.yourmechanic.com/services/radiator-hose-replacement) is a fairly minor job if that is in fact all that needs to be done. Many times, when a car is being sold at a very deep discount, there may be a number of...
Related articles
Starter or Car Battery: How to Diagnose Which Part is Bad?
A dead car battery is a common cause for a car not starting condition. A faulty car starter motor can have similar symptoms, but the fix is different.
2012 Ford F-150 vs. 2012 Chevrolet Silverado: Which One Should I Buy?
When you’re ready to really get some work done, there’s nothing like a full size pickup truck. These trucks are ready to haul a big load and really get in there and get busy. SUVs are great for moving people,...
The Best Used Cars to Buy If You're a Gardener or Landscape Architect
Gardeners Gardeners and landscape architects need to haul around quite a bit of gear. As a gardener, chances are you will need to transport a variety of mowing equipment, along with smaller implements. You may also need to move shrubs,...
Browse other content
Services
Cities