Shutters in reverse?

Tiny
MARK ROB
  • MEMBER
  • 2009 CHEVROLET AVALANCHE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
When you go in reverse the whole truck shakes but when you go forwards. It runs fine. Don’t have a clue what that would be?
Tuesday, June 10th, 2025 AT 6:53 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,235 POSTS
Yes, when the rear end starts to go out the wear in the gears can make it do this. When driving forward do you hear the rear end humming? If so this can be the case. I would remove the rear end cover to check the condition of the gears set. Here is a video to show you how:

https://www.youtube.com/watch?v=zarxKsspr3s&t=688s&pp=0gcJCckJAYcqIYzv

Also, I would check the transmission fluid level and condition, see if the fluid smells burnt and is discolored. This can be a sign the reverse clutches are burnt up. This guide can help:

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

Please go over these guides and get back to us.
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Wednesday, June 11th, 2025 AT 8:54 AM
Tiny
MARK ROB
  • MEMBER
  • 1 POST
Hello, we figured it out and had a loose caliper on the front end and it was dragging on the inside of the rim somehow a bolt fell out of it. Thanks for your response.
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Friday, June 13th, 2025 AT 11:51 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,235 POSTS
Good find, that will do it. Thanks for letting us know.
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Friday, June 13th, 2025 AT 11:52 AM

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