Question about Chevrolet Silverado 1500
When you say humming as if out of balance you may have ansqwered your own question. Tail shaft vibration comes in aroun 30 mph and the points I would look for are loose uni joints or a lost balance weight from the tail shaft. To check uni joints look for rust streaks from cross.The next step is to grab firmly either side of the joint and see if there is any movement while twisting you hands in opposite directions. next lift one half of the cross and check for movement in the bearings repeat this at all uni joints check the tail shaft slip joint by trying to twist each half and check for up and down movement at this spline. front shafts fail more readily than rear ones
Posted on Jan 06, 2013
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Posted on Jan 02, 2017
I'm having the same problem with my 2006 Chevy 2500 duramax...The humming starts at 25mph and then gets less prominent and then at 50mph it gets more prominent and louder, then at 60mph you can hardly hear it.....I did notice a little bit of leakage where the front axel meets the from diff on the drivers side.
Posted on Aug 09, 2008
SOURCE: Rear Axle Leak
if it is the seal, you will have to remove the caliper and rotor, remove the differential cover and remove the bolt and pin inside the diff carrier housing. push in the axle and remove the axle clip and pull out the axle use a seal puller or prybar to remove seal reverse the steps to assemble
Posted on Dec 10, 2008
first drain fluid and remove diff cover take off tires theres a c-clip in the diff that needs to be removed so you can take the axles out the seal is behind the axles pull old ones and install new replace c-clip and cover fill with recomender diff oil you should be good
Posted on Oct 07, 2009
if ure changing passenger side a washer will drop behind the 4x4 shift fork in the diff as soon as u pull the cv axle out and u will have to drop the axle tube to reinstall this
Posted on Mar 01, 2010
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