Low hum front right end

JAKENBALTO

MEMBER
2002 CHEVROLET TAHOE
145,000 MILES

So today while driving my 2002 Tahoe 4x4, on pavement, I noticed a low humming coming from my right front tire, looked under the car, everything looked fine, the boot ect. The hum starts at about 25mph and speeds up consistently w/ my driving speed. The truck itself is riding just fine, normal, no issues, but the humming almost seems to have gotten more noticeable throughout today. What could this be? How do I go about diagnosing it?

3 Replies

CARADIODOC

MECHANIC
33,924 POSTS

Most common cause is a noisy wheel bearing. You have to run it in gear on a hoist, then listen next to each one with a stethoscope. Since it sounds like it's coming from the right side, there' a 50 percent chance it's the left one that's noisy.

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Monday, May 6th, 2013 AT 12:14 AM

JAKENBALTO

MEMBER
2 POSTS

Thanks for the response, that's what I have been finding in most of my online research as well. It sounds similar to a washer spinning off balance. Is it going to likely require replacement or clean up&service after pin pointing which one is bad?

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Monday, May 6th, 2013 AT 12:25 AM

CARADIODOC

MECHANIC
33,924 POSTS

It will need to be replaced. GM uses an assembly that bolts on. The part costs a lot more than for the older Chryslers and Fords but it takes less time to replace.

I describe them as sounding like an airplane engine.

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Monday, May 6th, 2013 AT 1:35 AM