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1999 GMC Suburban Base 1500

1999 GMC Suburban
Trim Info:
Rear Wheel Drive, 1500
14 mpg city / 18 mpg hwy
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February 22, 2013, 10:17 pm

Kishma O

Question: what is the howling sound coming from?

Hi, i have a 1993 gmc suburban k1500 on 24" rims and i recently replaced the tires on it. after about a week driving on them i started get this howling sound when driving 30mph or higher, and when coming to a stop i get a whining down sound. i have had both front and rear differential serviced with gear oil. but i can not figure out where this howling sound is coming from, can be heard very clear with windows up but not clear with windows down. i can be heard from drivers seat and sounds like its coming from front. but also can be heard from rear and sounds like its coming from rear. what possibly can this be?

February 24, 2013, 10:12 am

Richard W
Expert Mechanic

You have a front wheel hub bearing going out. Or you have a rear axle bearing. I would jack the front end up. Spin the tires. One should have a growling noise. Then On the rear Take the tire and try to move it up and down. Any movement you need axle bearings

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