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2002 yukon xl 2wd..while driving above 55 mph ive noticed a bearing type sound that does not change pitch when vehicle is turned either direction while driving,and gets louder the faster i go especially aroud 75mph and seems to be more noticable when im accelerating,any information would be great..thank you
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Two possibilities come to mind with his type of noise and they both require attention NOW! To check the vehicle park on a level surface with the vehicle off and in park (you may need help). Slide under the vehicle ahead of the rear tire so you can see the connection of the driveshaft to the rear end. Then rock the vehicle back and forth with the tire and look at the u-joint connection. If the rear end yoke is moving more than the driveshaft the u-joint needs replacing. If the joint is extremely bad you can sometimes grab the driveshaft and wiggle it. If the vehicle rocks back and forth and there is little or no movement in the drive shaft and you hear clunking in the rear end there can be serious trouble in the rear end. Either condition will require some mechanical skill to fix. I hope this helps.
A high pitched whine like that indicates a bad bearing. Water pump, power steering pump, accessory belt slipping, alternator bearing, or in the worst case scenerio, Transmission pump.
It sounds like a wheel bearing is going bad. They are easy to change. If you have a place to jack the vehicle up. Try spinning the front wheels. You should hear a scraping noise as the wheel turns.Also replace both sides at the same time,as the otherside is not far behind.
Quite often it is a bad wheel bearing, a lot of chevy's are notorious for them. A wheel bearing will usually create a growling type noise that is more prominent at around 40-60MPH. If its a wheel bearing you should notice a change in pitch when turning in one direction, for example if you have a bad right side wheel bearing it will be noisy driving straight ahead, then get louder when turning LEFT. If you turn right the noise softens. The weight distribution of the front end will be greater on the right side when turning left. Of course the works in the opposite direction. If the noise remains constant going straight and turning it could be a bad tire. Visually check the tire for pressure and bulges in the side wall. You didn't mention what type or model vehicle you have, because in some cases the rear wheel bearing could be causing the noise.
No, have not heard of there being a problem with these bearings. But yours could have a bad bearing just the same, jack up the right rear and turn the tire/wheel by hand, feeling for any scruffiness in the turn. Then jack up the left side and do the same, feeling for any difference. This will tell you if you do have a bad bearing. Hope this helps.
the jerking and noise you are experiencing is the drive chain and bearings in the transfer case also you may want to check the end play in both front and rear pinion bearings and yokes
if it makes the noise more at speeds around 100kmph than you most likey need a wheel bearing but if its noticable aspeeds under 20 kmph than its probable a u-joint
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