Rear diff/pinion squealing loud under acceleration...?
Truck started making a weird squealing noise today under acceleration/load. Turns out its coming from the rear diff/pinion.
I had to hold my foot on the brake to simulate a "load" during the video to get it to make noise. It doesn't make the noise in reverse, or just coasting. Any ideas what could be making this?? I sprayed some WD-40 on the u-joint with no change... |
After a lot of searching, it appears that this is very likely caused by a bad rear u joint. I just find it weird that it made literally no noise until today!
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