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Discussion Starter #1
I have a salvaged 09 Traverse. Only 6K miles. I've had it for around two months and runs fine. I have noticed on the highway at around 65, when the engine starts pulling a little as in going up a small incline the there is a very low hum. I know that some hum is normal and is a symptom of the low 1500-1600 RMPs that I am running, but how much is normal? It sounds like I have a large sub under the hood. I'm not getting any vibrations, but just a deep base sound.

I have a trip this weekend where I will be 70+ mph on the interstate so I hope to see if the slightly higher mph and RPMs will lessen the sound. I've always felt the engine was a little louder than normal, nothing I was really worried about.

Haven't never driven another Traverse, I was just curious how much engine noise you guys got?

I do have a two year bumper to bumper warranty so if you guys don't see this as normal I can have the place check it out.
 

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how salvaged?
what comes to mind- is some kind of structural damage that was not fixed...
and now transmitting vibrations into cabin.
It could be the tires and the roadway.

If you hear it-- let off the gas-- and put in neutral-- does it go away? or still there...

While in neutral--- if you rev the engine up to the rpm's where you heard the noise- does it come back?

But it may just be the low rumble you mention of the lower RPM's
 

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Discussion Starter #3
It had front end damage, but it has been restored to mostly new. My original thoughts were a leak in the exhaust making it louder. I just don't know what is "normal" engine noise for a Traverse since I have only heard mine.

I don't believe it is the tires or the road. Its only when it pulls, up a slight incline or hill. If I let off the gas it does go away. Obviously if it pulls hard enough the transmission shifts down and the RPM jumps giving it a different sound (expected in my mind).
 

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its very possible its is a slight exhaust leak under load...
 

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Almost sounds to me like engine is 'lugging'. Sounds like you're either going uphill (slight/long grade) and trying to increase speed but slight gas pedal won't cause tranny to kick down or the torque converter to 'unlock'. The effect is a vibration felt and heard while the engine lugs the vehicle up to speed.

What date code (build month/year) is your '09?
 

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My Traverse is dead quiet. I can't tell (if my eyes are closed, in the passanger seat of course) when we are going up or down hill. I assume an exhaust leak as well. Something may have gotten stressed in the accident.
 

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Sounds like the exhaust may be "grounding" ( touching the body/frame) at some point, causing the sound to resonate into the cabin.

Bob
 

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Discussion Starter #8
@bigtallvandy - Its 12/08

@All
So none of you have much engine noise at all? Even during acceleration its pretty quiet? Don't get me wrong, its not terribly loud, but louder than I would expect, and louder than our 04 venture.
 

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well when I accelerate- theres noise...
from the engine, the tires, air etc...
But I have not sensed any out of the ordinary noise (like an exhaust leak) that would make me raise my eyebrow.
I will pay more attention on some hills and the lower revs.
 

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Best bet is to go to a Chevrolet dealership and ask to test drive one. A "not terrible loud" sound to one person is different then to the next.
 

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Far more quiet and comfortable than any prior vehicle I've owned.

Has the dealership had a look at it or been able to replicate the problem?
 
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