When driving in 2WD I hear a rattling/grinding sound?

1995 CHEVROLET SILVERADO
150,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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STEVEPL
  • MEMBER
  • 1 POST
However, when putting it into 4WD the noise stops. Any ideas on what this could be?
Apr 2, 2023 at 9:36 PM
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STRAILER
  • Experienced Mechanic
  • 55,256 POSTS
This sounds like you need to check the rear U joints for wear, or you have a transfer case that needs to be rebuilt or is low on fluid. If you upload a short video of the problem, I could tell for sure what's going on. Here is how you can remove the drive shaft to check the U joints:

https://www.2carpros.com/articles/how-to-remove-a-drive-shaft

Check out the images (below). Please let us know what happens.
Apr 3, 2023 at 6:59 AM
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