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Unread 03-18-2015, 06:25 PM   #1
2003jeepkj
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What's this vrum, vrum noise I'm hearing

2012 GJ 3.3 w/ 28000 miles.

I'm hearing a rotating noise, something like a vrum, vrum, vrum when the vehicle is under a load such as climbing a hill. I can also feel the noise at the left side of the floorboard. It will happen even when the cruise control is on.

When driving at any speed w/o a load the car is quite.

I was passing the Jeep dealer today so I pulled in and told them, the service manger thinks it's the Transmission. It think it's more like a hub bearing.

They made an appointment from me this next M<Monday.

Let me know what you all think before the take me on a Trans job.

PS- There is no warranty on the vehicle


Last edited by 2003jeepkj; 03-18-2015 at 06:45 PM..
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Unread 03-19-2015, 06:12 AM   #2
2003jeepkj
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Anybody?
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Unread 03-19-2015, 07:02 AM   #3
2003jeepkj
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I read a few threads here with similar concerns and the culprit was the factory tires, once changed the noise went away.
In my case I have 265/60r18 Michelin Latitude tires, so I'm still having a vibration or drone noise.
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Unread 03-19-2015, 09:32 AM   #4
plasticgunz
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I can't comment on the tranny or the hub bearing, but getting rid of the Michelin Latitudes certainly quieted my ride. Those things are crap.
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Unread 03-26-2015, 02:39 PM   #5
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Quote:
Originally Posted by 2003jeepkj View Post
2012 GJ 3.3 w/ 28000 miles.

I'm hearing a rotating noise, something like a vrum, vrum, vrum when the vehicle is under a load such as climbing a hill. I can also feel the noise at the left side of the floorboard. It will happen even when the cruise control is on.

When driving at any speed w/o a load the car is quite.

I was passing the Jeep dealer today so I pulled in and told them, the service manger thinks it's the Transmission. It think it's more like a hub bearing.

They made an appointment from me this next M<Monday.

Let me know what you all think before the take me on a Trans job.

PS- There is no warranty on the vehicle

Hey 2003jeepki,
2012 Jeep Grand Cherokees came with a 5/100,000 powertrain warranty. Is the warranty you are referring to the 3 year/ 36,000 mile Basic Limited Warranty?
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Unread 03-26-2015, 02:48 PM   #6
Tweezer19
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Check to make sure you aren't in a Mazda.
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Unread 03-26-2015, 03:03 PM   #7
2kg4u
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Quote:
Originally Posted by Tweezer19 View Post
Check to make sure you aren't in a Mazda.
That would be zoom zoom, not vrum vrum.
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Unread 03-26-2015, 03:10 PM   #8
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A hub bearing will complain more when turning. For example, if the front left bearing is going it will make more noise when sharply turning to right due to the lateral load. The fact it only happens under load sounds like transmission, differential, or a U joint on a drive shaft. When you find conditions under which it happens, try duplicating those conditions using different gears. In other words, if at a particular speed going up a specific hill you hear the noise and the vehicle is in 3rd gear, try the same speed up the same hill in 2nd gear. If the noise is worse it could be transmission. If the noise stays the same it is likely something else in the drive train.

My response is generic to any vehicle. Someone with more specific JGC knowledge may have other ideas.
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Unread 03-26-2015, 03:41 PM   #9
ColdCase
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A bad UJoint or axle shaft will give you that kind of vibration. Often it just has to be the right kind of load and speed, too much or too little throttle and it disappears. There is usually a speed/throttle sweet spot.

Check your wheel lug nuts, make sure that are all tight.
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