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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Throw out bearing possibly or Ujoints. The pinion nut should be like 250 Ft Lb torque, Could be what was said: Nut or pinion brg. Try down hill in neutral, coasting, that way ring/pinion and ujoints are being driven by the forward motion, not the engine. See what happens. It's something where the torque of the drivetrain is taking out the "slop" and when relaxed is howling. Ujoints are easy and cheap to replace to see if there is any improvement. Usually you can not tell if ujoints are bad by exam or feel while on truck. You are half way there when you check/tighten Nut 
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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