when I let off the accelerator there is a whining noise

2007 CHEVROLET AVALANCHE
192,000 MILES • 5.3L • V8 • 2WD
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JOHNSON9609
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Recently installed a drive shaft. Now reverse is very sluggish and almost act like it doesn’t want to back up. Also, when I’m riding down the road the truck runs great but when I let off the accelerator a whining noise starts and if I push the accelerator down again the noise stops immediately. Any ideas?
Nov 28, 2019 at 6:19 PM
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JACOBANDNICKOLAS
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Hi,

When you replaced the drive shaft, were the universal joints also replaced? Did everything align easily for you?

Let me know.
Joe
Nov 28, 2019 at 8:06 PM
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JOHNSON9609
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The u-joints weren’t replaced and no the alignment wasn’t easy at all.
Nov 28, 2019 at 11:50 PM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Something is either different, went together wrong, or you have bad u-joints. It really shouldn't have been difficult. Are you certain the driveshaft that was used is the same as the original? Also, here is a link that explains how to check u-joints:

https://www.2carpros.com/articles/how-u-joints-work

Removal and replacement directions:

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

Let me know if anything in the links help.

Take care,
Joe
Nov 29, 2019 at 7:14 PM