Mechanics

GMC SIERRA WHEEL PROBLEM

2001 GMC Sierra

Drive Train Axles Bearings problem
2001 GMC Sierra V8 Four Wheel Drive Automatic 160000 miles

when I put my pickup in reverse or drive the rear differential will clunk like a bad ujoint but its not the ujoint its in the rear diff. How do I find out whats causing this noise? It seems to be getting louder so had to quit driving it.
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Kevintrinakinn
July 16, 2010.



Hi
Most likely worn pinion gear and bearing also possible ring gear worn. Jack up both rear wheels off ground in neutral rotate driveshaft in one direction till wheel moves then reverse till wheel turns note amount of play if more than 1/2 inch thenworn diff. parts.
Hope this helps
Thanks for donate


http://www.2carpros.com/forum/automotive_pictures/198357_Graphic_519.jpg


Docfixit
Jul 16, 2010.