It is never enjoyable to experience a sound in your car that you don’t know the source of. So, what if you find a loud noise that persists on your GMC Terrain? It is highly possible that this is a minor trouble, but before beeing sure, it is better to execute some verifications. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has made this content to help you solve it. First, we will summarize the possible reasons for the trouble according to when loud noise shows up on your GMC Terrain, and then we will look into the region of origin of the noise. In any case, if this noise lasts, follow these suggestions to help you find the source.
–
When does my GMC Terrain generate a loud noise?
One way to discern a noise from your GMC Terrain is to identify when it appears. Indeed, some trouble can be connected to parts that are only stressed under certain conditions. It is this process that we will focus on in this first part.
Loud noise GMC Terrain when accelerating
Loud noise on GMC Terrain that takes place when you are accelerating can be symptomatic of different failures. Indeed, if you experience a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will cause a much higher noise than during normal operation. Additionally, it is also highly possible that loud noise on your GMC Terrain is linked to a wheel bearing, which is one of the most common origins of these types of symptoms. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the trouble may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it increases speed.
o
When my GMC Terrain is stopped
If your GMC Terrain makes a loud noise while not accelerating, engine on, the trouble may be in connection with 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 GMC Terrain and how can I be sure of its origin?
Now that we have identified the source of the sound, we will look into the verification stage to ensure that this is the concern you are encountering.
-
The loud noise comes from the wheels of my GMC Terrain
As we have seen before, loud noise from the wheels of your GMC Terrain may be in connection with two main problems. 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 keep in mind to examine 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 quickly. If it is a deformed tire, make sure to visually check the entire tread area for linearity. If it is the balancing of the wheels of your GMC Terrain that is the trouble, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both cases, you will have to go to your auto technician to replace the tires or execute a balancing.
-
The loud noise comes from the engine of my GMC Terrain
In case you have recognized loud noise as coming from the engine of your GMC Terrain, 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 encounter a power loss during your acceleration. If the loud noise on your GMC Terrain is related to air intake, the check 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 cause an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then examine that the engine idle speed is not random. In case you confirm one of these two problems, take your vehicle to your service garage .
-
Loud noise comes from the exhaust pipe of the vehicle
If the noise you have discovered comes from the exhaust pipe of your GMC Terrain, it is highly possible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your GMC Terrain, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To validate this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of source 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.
