It is never relaxing to experience a noise in your automobile that you don’t know the source of. So, what if you discover a loud noise that is persistant on your Chevrolet Express? It is very possible that this is a minor problem, but before beeing sure, it is better to complete some investigations. Whether that loud noise comes from the front of the car, from the rear, whether it appears when you accelerate or when you are parked, our team has created this content to help you fix it. First, we will summarize the possible explanations for the issue according to when loud noise appears on your Chevrolet Express, and then we will give attention to the region of origin of the noise. In any case, if this noise continues, follow these advice to help you find the source.
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When does my Chevrolet Express produce a loud noise?
One way to discern a noise from your Chevrolet Express is to define when it occurs. Indeed, some trouble can be related to components that are only stressed under certain conditions. It is this method that we will focus on in this first part.
Loud noise Chevrolet Express when accelerating
Loud noise on Chevrolet Express that shows up when you are accelerating can be symptomatic of multiple failures. Indeed, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will create a much higher noise than during normal use. Furthermore, it is also highly possible that loud noise on your Chevrolet Express is linked to a wheel bearing, which is one of the most common origins of these types of symptoms. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the problem may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
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When my Chevrolet Express is stopped
If your Chevrolet Express makes a loud noise while not accelerating, engine on, the problem may be connected to poor air intake. An air intake hose that has come loose or has a hole in it may be the cause.
Where does loud noise come from on my Chevrolet Express and how can I be sure of its origin?
Now that we have identified the cause of the noise, we will deal with the verification stage to ensure that this is the issues you are having.
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The loud noise comes from the wheels of my Chevrolet Express
As we have seen previously, loud noise from the wheels of your Chevrolet Express may be connected to two main disorders. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So consider to verify by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case change it or them as soon as possible. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Chevrolet Express that is the problem, you will tend to feel a vibration in the direction of the car as you go faster. In both cases, you will have to go to your mechanic to replace the tires or execute a balancing.
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The loud noise comes from the engine of my Chevrolet Express
In case you have discovered loud noise as coming from the engine of your Chevrolet Express, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be associated with a compression loss during the engine ramp-up phase, so you should experience a power loss during your acceleration. If the loud noise on your Chevrolet Express is related to air intake, the control will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would induce an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then verify that the engine idle speed is not random. In case you confirm one of these two disorders, take your car to your service garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have noticed comes from the exhaust pipe of your Chevrolet Express, it is highly possible that you have rust if your car is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Chevrolet Express, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To confirm this, get help from someone who will stand under the car while you accelerate to find the exact area of starting point of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
