Fix Jeep Grand Cherokee Humming Noise When Accelerating

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Last Updated on July 1, 2022

The Jeep Grand Cherokee is a mid-size SUV line produced by the American automaker Jeep. It comes in two- or four-wheel drive, and three trim levels: Laredo, Limited, and Overland.

There is ample evidence and many reports that suggest a humming noise can be heard when Jeeps accelerate. An annoying metallic whining sound can range in frequency from a low humming noise to a very loud and irritating chirping noise.

If you’re driving your jeep at high speeds on a highway and you hear a humming noise, it’s important to get the issue fixed as soon as possible. Not only is it irritating, but it can also be risky. The humming noise could be indicative of a major problem, so it’s best to not take any chances.

There can be several reasons for the humming noise in a Jeep Grand Cherokee. To find the source of the problem, you will need to carry out a few tests. This will help to identify the real issue and enable you to fix it.

You must fix the problem after you have addressed the source of the issue. The most common causes of humming noise are:

  • Faulty wheel bearing
  • Uneven tire wear
  • Low transmission fluid
  • Faulty transmission gears
  • Worn tire
  • Loose steering belt
  • Exhaust system leaks

We’ll talk about these issues in detail below.

Jeep Grand Cherokee Humming on Acceleration

Jeep Grand Cherokee Humming on Acceleration

Faulty wheel bearing 

Humming noises in your Jeep Grand Cherokee can be caused by a faulty wheel bearing. A grinding or humming noise coming from the direction of the affected wheel is the most common sign of poor wheel bearing.

Humming noise is the first sign of faulty bearing. After confirming that your Jeep has a bearing problem, you must replace the wheel bearing.

You’ll need to use a jack to lift your Jeep so you can replace the bearing. Remove the wheel after that. Using impact tools, remove the CBC wheel. Remove the brake caliper from the rotor and pull the rotor away from the jeep. Replace the worn-out bearing with a new one.

Even if your Jeep Grand Cherokee only has one defective wheel bearing, it’s a good idea to replace the second bearing on the same axle. It’s safe to assume that both bearings were under similar stress and that the second bearing will fail soon. It saves time and money if they are both replaced at the same time.

Uneven tire wear 

Humming noises in Jeep Grand Cherokee can also be caused by unevenly worn tire tread.

Vehicle owners should consult their owner’s manual and adjust their tire pressure according to the manufacturer’s recommendations to fix this type of wear.

Low transmission fluid 

Low transmission fluid issues are easy to check and fix. You can able to check the position of the transmission fluid by checking the transmission pipe under the hood.

 Pull out the transmission dipstick to check the fluid levels. The location of the dipsticks is described in detail in your owner’s manual. If your fluid level is low, you’ll need to top it up.

Faulty transmission gears

When you accelerate, if the gears in your transmission system are worn out, you’ll hear a humming noise. In this case, you should take your Jeep to a dealership or a local mechanic.

Worn tire 

If your tires are severely worn, you may hear a humming noise when accelerating. Tires that have been worn down will not perform well in snow or during rain. Which raises the risk of an accident. So replace it with a new tire in this case.

Loose steering belt 

When the steering belt on your Jeep becomes loose, it may make a humming noise when you accelerate. If this is the case, you have to tighten the steering belt. Put the wheel straight. Go underneath the jeep to fix it up. Adjust the steering belt with a wrench. 

Exhaust system leaks

If none of the other common causes of humming in your Jeep Grand Cherokee have been addressed, exhaust system leaks may be the cause. It will be difficult to tell whether or not your exhaust system is leaking. If you suspect this is the problem, you should consult an automotive professional.

Conclusion 

When driving at high speeds, many Jeep Grand Cherokee owners have complained about the hammering noise. There are many reasons for causing it. Faulty bearing and worn tire is the most common problem causing the sound. 

I’ve discussed the most common causes of hammering noise while accelerating. By reading this article, you can determine the problem with your Jeep. You can usually solve the problem on your own.

You must take the necessary precautions before visiting a mechanic. If the problem is minor, you can fix it on your own.   However, in the major cases, you must visit a workshop.

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About the Author: Brian Silvestro

Brian Silvestro is the founder and chief editor of OffroadersArena. He spends his free time tending to his BMW iX SUV and explaining its merits to anyone who'll listen.

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