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2003 Chevrolet Tahoe LS 4dr 1500

2003 Chevrolet Tahoe
Trim Info:
Rear Wheel Drive, 4 Door
14 mpg city / 18 mpg hwy
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August 30, 2013, 6:04 pm

Benjamin G
 

Question: What is making the front end of my 04 Tahoe hum between 68-74 mph?

04 Tahoe makes a loud hum noise going 67-74 mph roughly coming from the front end. It only makes this noise in between those speeds. Any ideas?


September 2, 2013, 7:57 am

Ron W
Expert Mechanic

It’s really hard to diagnose this type of problem long distance. You'll need to have a mechanic listen to it to actually isolate what the noise is.

but I would say, that sounds like tire noise from your description. you might try rotating the tires and see if the noise follows the tries to the back. If it does, its a tire related issue.


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September 2, 2013, 9:23 am

Benjamin G
 

Thanks Ron. I've had this problem for years through a few set of tires. I've read online that it could be bad front wheel bearings so I'd need to replace the wheel hubs. My front right axel seal is leaking too. Could that leak create a noise like that?


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September 2, 2013, 5:32 pm

Ron W
Expert Mechanic

Bearings could make that noise. Usually they make a growl or a pulsing noise that gets louder with speed when they begin to fail.

If you jack up the wheel and rotate the tire while keeping the other hand on the coil spring, you should feel no roughness-vibration in the spring. If you do feel any (compare side to side as well) then the bearing is probable.

The Axle seal should not make any noise at all, even if it is leaking.


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September 2, 2013, 7:25 pm

Benjamin G
 

Thanks Ron. I'll try that. I noticed the leak right at the 6 bolt flange on the front right side of the differential. Now, if that's been leaking for a while now, could the lack of differential fluid cause the loud hum & vibration at those speeds? It's so weird because it only does that between 66-74 mph. It's fine at all other speeds.


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September 6, 2013, 4:16 pm

Ron W
Expert Mechanic

It could. It may be a bearing making noise or possibly a harmonic vibration caused by an imbalance on the CV shaft. It’s really hard to diagnose this type of problem long distance. You'll need to have a mechanic listen to it to actually isolate what the noise is.


1/1 users found this helpful.

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